УСТРОЙСТВО ДЛЯ ВЫГРУЗКИ ПЫЛИ ИЗ СУХОГО ПЫЛЕСБОРНИКА ДОМЕННОЙ ПЕЧИ

Изобретение относится к области металлургии, в частности к устройствам выгрузки пыли из пылесборника доменной печи. Устройство включает разгрузочный клапан, расположенный за разгрузочным отверстием сухого пылесборника доменной пыли, и расположенную за разгрузочным клапаном полностью закрытую систему транспортировки доменной пыли. Это устройство имеет также систему управления, которая управляет открытием разгрузочного клапана в зависимости от остаточной пропускной способности системы транспортировки доменной пыли. Использование изобретения обеспечивает улучшение условий выгрузки доменной пыли и упрощение устройства. 13 з.п. ф-лы, 5 ил.

СПОСОБ ОБЕЗВРЕЖИВАНИЯ ХРОМОВОГО ШЛАКА С ИСПОЛЬЗОВАНИЕМ МЕТОДА ОБЖИГА И ДОМЕННОГО ПРОИЗВОДСТВА

Изобретение относится к области металлургии, в частности к способу обезвреживания хромового шлака. Способ включает приготовление ядер окатышей из хромового шлака, угольной пыли или коксика и связующего. На производственной линии агломерации или линии производства окатышей образовывают оболочки окатышей из сырьевых материалов агломератов, или окатышей, или уловленной пыли из железных отходов металлургического производства, и формируют комплексные окатыши по методу вторичного окомкования, затем формируют агломераты или окатыши. Высокая температура в процессе агломерации или обжига обеспечивает создание восстановительной атмосферы внутри оболочек окатышей, осуществляя предварительную обработку хромового шлака. Использование изобретения обеспечивает эффективное, экономичное и экологическое обезвреживание хромового шлака с утилизацией уловленной пыли из железосодержащих отходов металлургического производства. 6 з.п. ф-лы, 10 пр.

СПОСОБ РАБОТЫ ДОМЕННОЙ ПЕЧИ И КОПЬЕ

Изобретение относится к области металлургии и может быть использовано для обеспечения технологических процессов в доменной печи. В способе вдувания в доменную печь твердого восстановителя, газообразного восстановителя и газа, поддерживающего горение, через фурмы используют копье параллельного типа, выполненное в виде объединенных в пучок трех независимых нагнетательных трубок, параллельно и совместно размещенных во внешней трубке копья, при этом один или оба из газообразного восстановителя и газа, поддерживающего давление, вдувают одновременно с твердым восстановителем через соответствующие нагнетательные трубки, причем при вдувании через копье параллельного типа нагнетательная трубка для твердого восстановителя и нагнетательная трубка для газообразного восстановителя расположены выше нагнетательной трубки для газа, поддерживающего горение. Изобретение обеспечивает возможность улучшения сгорания угольной пыли, вдуваемой через фурму, повышает эффективность охлаждения, а также уменьшает удельный ...

СИСТЕМА КОНТРОЛЯ ДЛЯ КОЛЬЦЕВОГО СКРУББЕРА

Изобретение относится к системе контроля состояния, в частности, для скруббера очистки газа. Система контроля состояния конуса газового скруббера, содержащая устройство контроля состояния, герметизированный конус газового скруббера, установленный с возможностью перемещения в газовом резервуаре, воротник, неподвижно установленный в газовом резервуаре радиально снаружи конуса, точку отбора давления в герметизированном конусе, при этом точка отбора давления связана с устройством контроля состояния посредством впускной линии, выпускную линию от устройства контроля состояния к газовой зоне ниже герметизированного конуса по направлению потока, при этом устройство контроля состояния содержит манометр давления и/или прибор измерения потока газа, при этом герметизированный конус газового скруббера содержит конус газового скруббера и пластину основания, формирующую герметичную оболочку. Технический результат – улучшение контроля состояния конуса. 2 н. и 6 з.п. ф-лы, 3 ил.

СПОСОБ ОБОГАЩЕНИЯ КИСЛОРОДОМ ВХОДНОГО ГАЗА

Изобретение относится к металлургии, конкретно к методам обогащения кислородом газа, подаваемого в печь. Способ включает обогащение кислородом первого потока входного газа, вводимого в печь, путем использования потока обогащенного кислородом газа из второго потока входного газа, в котором первый поток входного газа сжимают, а затем нагревают перед введением в печь. Второй поток входного газа разделяют, используя модуль с переносом ионов, содержащий мембрану с переносом ионов, имеющую входную сторону и выходную сторону, для получения потока обедненного кислородом газа на входной стороне и потока чистого газообразного кислорода или потока газа, обогащенного кислородом, на выходной стороне. Поток чистого газообразного кислорода или поток газа, обогащенного кислородом, добавляют в первый поток входного газа в любом положении перед тем, как первый поток входного газа вводят в печь. Использование изобретения обеспечивает эффективное получение кислорода для обогащения вдуваемого в печь газа. 9 ...

СПОСОБ ПОВЫШЕНИЯ ПРОИЗВОДИТЕЛЬНОСТИ ДОМЕННОЙ ПЕЧИ

Изобретение относится к области металлургии, конкретно к доменному производству. Способ включает контактирование предназначенного для загрузки доменной печи железосодержащего агломерата с эффективным для модифицирования шлака количеством дисперсии сыпучего материала. Контактирование осуществляют перед загрузкой доменной печи агломератом. При контактировании на части наружной поверхности железосодержащего агломерата образуется поверхностный слой покрытия. Использование изобретения обеспечивает повышение коэффициента расхода топлива и устойчивости работы. 17 з.п. ф-лы, 13 табл., 4 ил.

ПРОГНОЗИРОВАНИЕ ВЕЛИЧИНЫ ПОЛОСТИ В СИСТЕМАХ УПЛОТНЕННОГО СЛОЯ С ИСПОЛЬЗОВАНИЕМ НОВЫХ КОРРЕЛЯЦИЙ И МАТЕМАТИЧЕСКОЙ МОДЕЛИ

Изобретение относится к прогнозированию величины полости в системах уплотненного слоя. Технический результат - повышение качества прогнозирования. Способ осуществляют с помощью корреляции или математической модели, выполненных в компьютерной системе. Осуществляют получение данных, относящихся к свойствам материала системы уплотненного слоя частиц, и вычисляют радиус полости при возрастающей и убывающей скорости газа с использованием математической модели, которая включают в себя напряжение/фрикционные силы, или вычисляют радиус полости при возрастающей и убывающей скорости газа с использованием математических уравнений на основе корреляции с учетом радиуса печи, скорости продувки, диаметра отверстия фурмы, порозности слоя, вязкости газа, размера частиц, фактора формы, плотности подаваемого газа, плотности твердого вещества, эффективной высоты слоя, коэффициента трения стенки, ускорения силы тяжести. При этом определяют и учитывают эффективный диаметр частиц. 6 з.п. ф-лы, 24 ил., 2 табл.

СТАБИЛИЗИРОВАННАЯ НА ДЛИТЕЛЬНЫЙ ПЕРИОД ВЗВЕСЬ ДЛЯ НАНЕСЕНИЯ ПОКРЫТИЯ НА ЖЕЛЕЗНЫЙ МИНЕРАЛ И ТЕХНОЛОГИЯ ЕЕ ПРОИЗВОДСТВА

Изобретение может быть использовано для предотвращения сцепления друг с другом брикетов, частиц или окатышей, изготовленных их доломита, магнезита, железной руды при их высокотемпературной обработке. Взвесь содержит твердую фракцию в количестве приблизительно 52-61%, воду в количестве приблизительно 39-48%, не менее одного анионного полиэлектролита при концентрации по меньшей мере 25% сухой массы в количестве приблизительно 0,5-2,5% и клейкий состав при концентрации по меньшей мере 30% сухой массы в количестве приблизительно 0,5-5,0%. Вязкость взвеси приблизительно 500-1500 сП, рН более 10,5. В качестве твердой фракции взвесь содержит частицы со средним размером 1-2,5 мкм гидроксида или карбоната магния или гидроксида или карбоната магния и кальция в количестве 50-60 мас.%. Эквивалентное содержание оксида магния в твердой фракции составляет 34-48%, содержание хлорида - менее приблизительно 0,6 мас.%. Обеспечивается стабильность взвеси при использовании и хранении в течение по меньшей мере ...

СПОСОБ ЗАПУСКА ПЛАВИЛЬНОГО ПРОЦЕССА

Изобретение относится к способу запуска или перезапуска процесса плавки металлосодержащего материала для образования расплавленного металла в плавильном устройстве. Плавильное устройство содержит плавильный сосуд, содержащий основную камеру, которая содержит ванну шлака и расплавленного металла с застывшим слоем шлака. При этом способ включает этапы: (a) вставки внешнего источника воспламенения в основную камеру плавильного сосуда для образования зоны нагрева в основной камере, (b) начала подачи холодного содержащего кислород газа в основную камеру и воспламенения горючего материала в основной камере, (c) начала подачи углеродистого материала в основную камеру и увеличения температуры в основной камере, и расплавления застывшего слоя шлака в основной камере, и (d) начала подачи металлосодержащего материала в основную камеру и плавления металлосодержащего материала и производства расплавленного металла в основной камере. Изобретение направлено на распознавание необходимости создания существенно ...

СПОСОБ ИЗГОТОВЛЕНИЯ УГОЛЬНОЙ ПЫЛИ

Изобретение относится к способу изготовления угольной пыли для использования в металлургической промышленности. Способ содержит этапы: нагрев сушильного газа в генераторе горячего газа, подача нагретого газа в угольную мельницу, ввод необогащенного угля в мельницу для превращения его в угольную пыль, сбор смеси сушильного газа и угольной пыли из мельницы и подача смеси на фильтр для отделения высушенной угольной пыли, сбор высушенной угольной пыли и подача части сушильного газа из фильтра на линию рециркуляции для возврата части сушильного газа в генератор горячего газа. При этом способ содержит цикл запуска, в котором нагретый газ подают через мельницу без ввода необогащенного угля, и цикл измельчения, в котором нагретый газ подают через мельницу и в мельницу вводят необогащенный уголь. Температурой на выходе смеси сушильного газа и угольной пыли управляют впрыскиванием воды в нагретый газ до его подачи в мельницу. Во время цикла запуска сушильный газ нагревают до температуры выше первого ...

ТИТАНСОДЕРЖАЩАЯ ДОБАВКА

Объектом изобретения является титансодержащая добавка, предназначенная для инжекций в металлургические печи для повышения долговечности облицовки печей в производстве стали. Титаносодержащая добавка содержит титансодержащие материалы, которые способны образовывать с реакционными партнерами, присутствующими при получении металлургических продуктов, устойчивые при высокой температуре и износостойкие соединения титана, такие, например, как титанаты алюминия, титанаты магния, Ti(C,N)-соединения или смеси таких соединений, отличающаяся тем, что титансодержащие материалы состоят, по меньшей мере, частично из природных титансодержащих материалов и/или частично из обогащенных диоксидом титана шлаков, причем титансодержащая добавка имеет до 100% дисперсность менее 0,2 мм. В качестве титансодержащего материала она содержит титансодержащую руду, обогащенные диоксидом титана шлаки и синтетические титансодержащие материалы. Технический результат изобретения: тонкая зернистость частиц не вызывает эрозии ...

СПОСОБ ПОЛУЧЕНИЯ И ПЛАВЛЕНИЯ ЖИДКОГО ЧУГУНА ИЛИ ЖИДКИХ ИСХОДНЫХ ПРОДУКТОВ СТАЛИ В ПЛАВИЛЬНОМ ГАЗОГЕНЕРАТОРЕ

Изобретение относится к способу и устройству получения чугуна или исходных продуктов стали плавлением в плавильном или угольном газогенераторах. Согласно изобретению осуществляют подачу оксидов железа или предварительно восстановленного железа и углеродсодержащего материала с газификацией углеродсодержащего материала с помощью вводимого кислородсодержащего газа. Кислородсодержащий газ вводят посредством, по меньшей мере, одной кислородной фурмы с возможностью его подачи, по меньшей мере, двумя газовыми потоками в стационарный слой плавильного или угольного газогенератора. При этом кислородная фурма имеет, по меньшей мере, один канал подачи кислорода и, по меньшей мере, два выпускных канала для кислородного потока с выпускными отверстиями. Причем каждый из выпускных каналов для кислородного потока соединен с одним каналом подачи кислорода, а средние оси заканчивающихся выпускными отверстиями участков выпускных каналов для кислородного потока образуют друг с другом угол 5°-15°. Изобретение ...

СПОСОБ ДОМЕННОЙ ПЛАВКИ

Изобретение относится к металлургии, в частности к выплавке чугуна в доменной печи. Способ включает загрузку в доменную печь твердого топлива, железорудных материалов и флюсов. В качестве твердого топлива используют кокс, полученный в результате коксования углеродсодержащей шихты, содержащей продукт, полученный путем замедленного коксования при температуре до 500°C смеси тяжелых сернистых остатков нефтепереработки и реагента - оксида щелочноземельного металла или гидроокиси щелочноземельного металла. Количество реагента в смеси составляет от 0,1 до 2% на каждый процент содержания серы в тяжелых сернистых остатках нефтепереработки. Количество флюсов, подаваемых в печь, определяют исходя из обеспечения модуля основности шлаков, равного 0,29-0,77. Использование изобретения обеспечивает эффективное снижение содержания серы в чугуне, снижение расхода топлива. 5 з.п. ф-лы, 2 табл.

СПОСОБ РАБОТЫ ДОМЕННОЙ ПЕЧИ

Изобретение относится к способу работы доменной печи. Горячий воздух вдувают в доменную печь из фурмы доменной печи. Угольную пыль вдувают в доменную печь из фурмы через копье одновременно со вдувом горячего воздуха. Обеспечение массового процентного содержания частиц угольной пыли, диаметр которых больше или равен 75 мкм, равного 65 мас.% или менее от общего количества угольной пыли, способствует эффективному смешиванию по меньшей мере одного из СПГ и кислорода, вдуваемого из копья, с угольной пылью и ускоряет реакцию между угольной пылью и кислородом и/или значительно увеличивает температуру угольной пыли за счет теплоты сгорания СПГ. В результате обеспечивается увеличение температуры горения, обеспечивающей снижение удельного расхода топлива. 3 з.п. ф-лы, 9 ил.

ШАХТНАЯ ПЕЧЬ И ВДУВ ОКИСЛИТЕЛЯ В НЕЕ

Изобретение относится к области металлургии и может быть использовано в шахтной печи при выплавке чугуна. Предлагается способ вдува окислителя со скоростью звука или сверхзвуковой скоростью в шахтную печь, в которой существует не менее одной точки перегрева и/или не менее одного холодного пятна, где уменьшается продолжительность активной фазы вдува окислителя со скоростью звука или сверхзвуковой скоростью в секцию с точкой перегрева, и где увеличивается продолжительность активной фазы вдува окислителя со скоростью звука или сверхзвуковой скоростью в секцию с холодным пятном. Причем каждая форсунка приспособлена вдувать газообразную среду со скоростью звука или сверхзвуковой скоростью в одну из n секций поперечного сечения шахтной печи в пределах интервала высоты Δh выше уровня h от дна шахтной печи, при этом n форсунок расположены на одном уровне h' от дна шахтной печи или на разных уровнях в пределах интервала высоты Δh выше уровня h от дна шахтной печи. Изобретение позволяет вдувать обогащенный ...

ВОССТАНОВЛЕНИЕ ОКСИДА ЖЕЛЕЗА ДО МЕТАЛЛИЧЕСКОГО ЖЕЛЕЗА С ПРИМЕНЕНИЕМ КОКСОВОГО ГАЗА И ГАЗА ИЗ СТАЛЕПЛАВИЛЬНОЙ ПЕЧИ С ПОДАЧЕЙ КИСЛОРОДА

Изобретение относится к способам для восстановления оксида железа до металлического железа на заводе с полным металлургическим циклом производства, на котором имеется коксовая печь и/или сталеплавильная печь с подачей кислорода. Более конкретно, настоящее изобретение относится к способам для восстановления оксида железа до металлического железа с применением коксового газа COG или COG и газа из основной сталеплавильной печи с подачей кислорода BOFG. Изобретение направлено на максимизацию количества железа прямого восстановления DRI, горячего железа прямого восстановления HDRI или горячебрикетированного железа HBI, которые могут быть получены из заданного количества COG и/или BOFG, и при этом минимизацию оборудования. 5 н. и 36 з.п. ф-лы, 7 ил.

Шихта для производства ванадиевого чугуна

Изобретение относится к области черной металлургии, в частности, к шихте для производства ванадиевого чугуна. Шихта содержит железорудное сырье, в качестве которого она содержит высокоосновный агломерат и/или неофлюсованные окатыши, и доменный ванадийсодержащий железофлюс, металлодобавки, кокс и брикеты, содержащие металлопродукт в виде отвальных металлургических шлаков, содержащих пятиокись ванадия, в количестве 90 %, в количестве 3,0-75,0 кг/т чугуна. Соотношение компонентов в шихте следующее, мас.%: металлодобавки - 0,5–8,0; кокс - 13,0–21,0; брикеты - 0,1–2,5; железорудное сырье - остальное. Изобретение обеспечивает снижение расхода железорудного сырья, снижение расхода кокса, увеличение производительности доменных печей. 3 з.п. ф-лы, 1 табл.

ТВЕРДЫЙ ТОПЛИВНЫЙ ПРОДУКТ И СПОСОБ ЕГО ФОРМИРОВАНИЯ

Изобретение относится к твердому топливному продукту и способу его формирования. Описывается твердый топливный продукт в виде брикетов или таблеток на основе спрессованных мелких углеродсодержащих частиц с полимерным связующим, заключающийся в том, что полимерное связующее образовано в результате реакции свободных карбоксильных ионов на поверхности углеродсодержащих частиц с полимером стирола или акрилонитрила с получением длинноцепного полимера, образующего химические связи с указанными частицами и обеспечивающего длительную сохранность топливного продукта. Описывается также способ его формирования. Технический результат состоит в создании относительно крупного твердого продукта, изготавливаемого из существующих отходов при добыче угля, а также производства кокса и/или стали и обладающего высокой топливной эффективностью и коммерческой ценностью. 2 с. и 25 з.п. ф-лы, 2 ил.

СИСТЕМА ГАЗООЧИСТКИ ДОМЕННОГО ГАЗА

Изобретение относится к утилизации вторичных энергетических ресурсов в черной металлургии, в частности в доменном производстве, и предназначено для использования в системах газоочистки, в частности в скрубберах мокрой газоочистки доменного газа. Система газоочистки включает корпус, входной и выходной газовые патрубки, систему подачи воды и систему удаления воды, не менее двух гидрозатворов, снабженных регулирующими дросселями, соединенными жёстким приводом с поплавковой камерой, и гидроагрегат, включающий гидротурбину и асинхронный двигатель, при этом гидроагрегат установлен последовательно с регулирующим дросселем на одном из гидрозатворов скруббера. Изобретение позволяет получить дополнительную электроэнергию за счет утилизации избыточного совокупного давления воды и газа. 1 з.п. ф-лы, 1 ил.

ОТВЕРЖДЕННАЯ БИОМАССА И СПОСОБ ЕЕ ПОЛУЧЕНИЯ

Изобретение относится к отвержденной биомассе, применяемой в качестве альтернативного вида топлива для угольного кокса, а также в качестве материала для различных целей применения, и способам ее получения. Отвержденная биомасса, пригодная для использования в качестве альтернативного угольному коксу топлива, а также в качестве углеродного материала, пригодного для различных целей, состоит из полукарбонизированного твердого вещества или предварительно полукарбонизированного твердого вещества, имеющего кажущуюся плотность 1,2-1,38, полученного в результате переработки, в которой исходную биомассу, которая является продуктом фотосинтеза, прессуют при нагревании в практически герметических условиях, в результате чего происходит термическое разложение гемицеллюлозы из числа основных компонентов исходной биомассы, то есть лигнина, целлюлозы и гемицеллюлозы, и протекает низкотемпературная реакция между целлюлозой и лигнином при сохранении их остовов, с получением указанного предварительно полукарбонизированного ...

СПОСОБ ПОЛУЧЕНИЯ РАСПЛАВА ЖЕЛЕЗА

Сущность изобретения: способ получения расплава железа включает восстановление железной руды в губчатое железо в зоне прямого восстановления металла, после чего губчатое железо плавят в плавильно-газифицирующей зоне при подаче углеродсодержащего материала с насыщением углеродсодержащего материала восстановительным газом и образованием шлака. Получаемый при этом восстановительный газ вводят в зону прямого восстановления металла, где он вступает в реакцию и выводится как доменный газ. Восстановительный и/или доменный газ подвергают мокрой очистке, а шламы, отделяющиеся при этой очистке дегидратируют до содержания некоторой остаточной влажности перед дальнейшей обработкой, после этого к ним примешивают угольную пыль и, в качестве связующего, быстротвердеющую известь; подвергают грануляции и полученный гранулят подают в плавильно-газифицирующую зону при увеличении основности шлака до максимума 1,25, предпочтительно до максимум 1,20. Эти мероприятия позволят подавать обратно в зону прямого восстановления ...

СПОСОБ ЭКСПЛУАТАЦИИ ДОМЕННОЙ ПЕЧИ И ВСПОМОГАТЕЛЬНОЕ ОБОРУДОВАНИЕ ДЛЯ ДОМЕННОЙ ПЕЧИ

Изобретение относится к вдуванию газа в доменную печь. Способ вдувания газа в доменную печь включает производство регенерированного метансодержащего газа с использованием отходящего газа, выходящего из доменной печи, и вдувание дутьевого газа и восстанавливающего агента в доменную печь из фурмы. При этом дутьевым газом является кислородсодержащий газ, причем регенерированный метансодержащий газ используют по меньшей мере как часть восстанавливающего агента, а кислородсодержащий газ и/или регенерированный метансодержащий газ предварительно нагревают перед вдуванием в доменную печь из фурмы. Расход циркулирующих атомов углерода в восстанавливающем агенте составляет 55 кг/т или более, причем расход циркулирующих атомов углерода соответствует выраженной в углеродном эквиваленте массе регенерированного метансодержащего газа, который вдувают в доменную печь в качестве восстанавливающего агента для получения 1 т жидкого металла. При этом кислородсодержащий газ имеет концентрацию кислорода 80 об ...

СПОСОБ РАБОТЫ ДОМЕННОЙ ПЕЧИ

Изобретение относится к вдуванию газа в доменную печь. Вдувают содержащий высокую концентрацию водорода газ, содержащий 80 мол.% или более газообразного водорода из фурмы при условии, в котором температура вдувания содержащего высокую концентрацию водорода газа представляет собой комнатную температуру или более и 300°С или менее, и объем газа газообразного водорода в содержащем высокую концентрацию водорода газе составляет 200 норм.м3/т или более, и 500 норм.м3/т или менее; условии, в котором температура вдувания содержащего высокую концентрацию водорода газа более 300°С и 600°С или менее, и объем газа газообразного водорода в содержащем высокую концентрацию водорода газе составляет 145 норм.м3/т или более; условии, в котором температура вдувания содержащего высокую концентрацию водорода газа более чем 600°С и 900°С или менее, и объем газа газообразного водорода в содержащем высокую концентрацию водорода газе составляет 125 норм.м3/т или более. Расход углерода в печи изменяют при вдувании ...

УСТРОЙСТВО ДЛЯ ОПРЕДЕЛЕНИЯ НЕИСПРАВНОСТИ ДОМЕННОЙ ПЕЧИ, СПОСОБ ОПРЕДЕЛЕНИЯ НЕИСПРАВНОСТИ ДОМЕННОЙ ПЕЧИ И СПОСОБ ЭКСПЛУАТАЦИИ ДОМЕННОЙ ПЕЧИ

Группа изобретений относится к устройству и способу определения неисправности доменной печи, а также к способу управления доменной печью. Устройство определения неисправности включает блок вычисления индекса неисправности, выполненный с возможностью вычисления индекса неисправности, указывающего степень неисправности доменной печи, с использованием выходного значения группы датчиков давления в шахте печи, установленных вокруг корпуса доменной печи, при этом индекс неисправности представляет собой статистический показатель Q, основанный на анализе основных компонентов; блок вычисления индекса вентиляции, выполненный с возможностью вычисления индекса вентиляции доменной печи, причем индекс вентиляции вычисляется на основе количества сгенерированного газа в доменной печи и значений измерителя давления, установленного в доменной печи, и измерителя давления внутри печи, установленного на выходе, относительно измерителя давления в направлении потока газа в доменной печи; и блок определения, выполненный ...

СПОСОБ ВВЕДЕНИЯ ВТОРОГО ПОТОКА ПЫЛЕВИДНЫХ МАТЕРИАЛОВ В ТРУБОПРОВОД ПНЕВМАТИЧЕСКОЙ ТРАНСПОРТИРОВКИ, ПО КОТОРОМУ ПЕРЕМЕЩАЮТ ПЕРВЫЙ ПОТОК ПЫЛЕВИДНЫХ МАТЕРИАЛОВ С РЕГУЛИРУЕМОЙ ПОДАЧЕЙ

Изобретение относится к способу введения второго потока пылевидных материалов в транспортный трубопровод, по которому перемещают первый поток пылевидных материалов с регулируемой подачей. Способ заключается в том, что вводят второй поток пылевидных материалов с контролируемой подачей и делают регулирование первой подачи пневматической транспортировки нечувствительным к нарушениям, вызываемым введением второго потока, регулируя первую подачу прямо или косвенно выше точки вдувания второго потока. Технический результат заключается в осуществлении контролируемого ввода второго потока пылевидных материалов в трубопровод, по которому перемещается первая регулируемая подача пылевидных материалов без нарушения этой первой подачи. 5 з.п.ф-лы, 2 ил.

СПОСОБ ЗАГРУЗКИ СЫРЬЯ В ДОМЕННУЮ ПЕЧЬ

Изобретение относится к загрузке сырья в доменную печь, снабженную бесконусным загрузочным устройством с главными бункерами и вспомогательным бункером в верхней части печи, причем вспомогательный бункер имеет меньшую емкость, чем главные бункеры. Способ предусматривает выгрузку руды (х), загруженной в по меньшей мере один главный бункер, в сборный бункер, причем руда (х) имеет индекс восстановимости больше 55%, и затем последующую загрузку руды (х) от центра печи в направлении стенки печи с помощью вращающегося желоба. При этом после начала загрузки руды (х), загружают только руду (х) с помощью вращающегося желоба по меньшей мере до тех пор, пока не будет загружено 45% массы руды (х) от общей массы руды (х), подлежащей загрузке за одну партию. Затем начинают выгрузку низкореакционной руды (у), загруженной во вспомогательный бункер и имеющей индекс восстановимости 55% или меньше, в сборный бункер; и затем низкореакционную руду (у) загружают вместе с рудой (х) с помощью вращающегося желоба ...

СПОСОБ ПОЛУЧЕНИЯ ГАЗООБРАЗНОГО АММИАКА И СОДЛЯ СИНТЕЗА МОЧЕВИНЫ

Изобретение относится к получению газообразного аммиака и COдля синтеза мочевины. Предлагается способ, в котором из металлургического газа (1), состоящего из газовой смеси, образованной из доменного газа и конвертерного газа, получают технологический газ (2), содержащий в качестве основных компонентов азот, водород и диоксид углерода. Далее указанный технологический газ (2) разделяют с получением газового потока (6), содержащего СО, и газовой смеси (5), состоящей по существу из Nи H. Затем из указанной газовой смеси (5) с помощью синтеза (7) аммиака получают газообразный аммиак (8), подходящий для синтеза (9) мочевины, и из указанного газового потока (6), содержащего СО, отводят СОс чистотой и в количестве, подходящих для синтеза (9) мочевины. Технический результат заключается в обеспечении эффективного способа получения газообразных исходных веществ для синтеза мочевины. 2 н. и 13 з.п. ф-лы, 1 ил., 1 пр.

СТАБИЛИЗИРОВАННАЯ НА ДЛИТЕЛЬНЫЙ ПЕРИОД ВЗВЕСЬ ДЛЯ НАНЕСЕНИЯ ПОКРЫТИЯ НА ЖЕЛЕЗНЫЙ МИНЕРАЛ И ТЕХНОЛОГИЯ ЕЕ ПРОИЗВОДСТВА

... 1. Стабилизированная на длительный период взвесь, которую можно использовать для нанесения покрытия на брикеты, частицы, окатыши или порошок некоторых видов материалов во избежание сцепления их друг с другом и, таким образом, формирования агломератов во время обработки при высоких температурах: содержание твердой фракции приблизительно от 52-72%; содержание воды приблизительно от 28-48%; вязкость приблизительно 500-1500 сП; средний размер частиц приблизительно 1-3 мкм; массовое содержание гироксида щелочного, щелочно-земельного или другого металла, карбоната или силиката приблизительно от 50-70%; значение рН более 10,5; эквивалентное содержание гироксида щелочного, щелочноземельного или другого металла, карбоната или силиката от 34-48%; удельная масса от 1,4 до 1,6; не менее одного анионного полиэлектролита при концентрации, по крайней мере, 25% сухой массой приблизительно от 0,5 до 2,5% и клейкий состав, который улучшает сцепление взвеси с окатышами или брикетами в процессе технологии ...

ПРОИЗВОДСТВЕННАЯ СИСТЕМА ДОМЕННАЯ ПЕЧЬ - КОНВЕРТЕР НА БАЗЕ РЕЛЬСОВОЙ ПЛАТФОРМЫ С РЕЗЕРВУАРОМ ДЛЯ ЖИДКОГО ЧУГУНА И СПОСОБ ЕЕ РАБОТЫ

Группа изобретений относится к производственной системе доменная печь - конвертер на базе рельсовой платформы с резервуаром для жидкого чугуна и способу управления такой системой. Система содержит чугунолитейный цех, сталеплавильный цех, колею для транспортировки жидкого чугуна и рельсовую платформу, которая ходит по колее для транспортировки жидкого чугуна, участок для складирования и дозирования стального лома. Колея для транспортировки жидкого чугуна последовательно соединена с чугунолитейным цехом, сталеплавильным цехом и помещением для складирования и дозирования стального лома, а участок для складирования и дозирования стального лома оборудован перегрузочным узлом для добавления стального лома в резервуар для жидкого чугуна. После получения жидкого чугуна из чугунолитейного цеха его направляют посредством рельсовой платформы в сталеплавильный цех, а резервуар с жидким чугуном с помощью грузоподъемного механизма в сталеплавильном цехе перемещают посредством крана в конвертер для смешивания ...

Способ выплавки чугуна в доменной печи

Изобретение относится к способу производства чугуна в доменной печи. Способ включает завалку железорудного сырья и древесного угля в качестве топлива в доменную печь, при этом древесный уголь перед завалкой насыщают метаном путем адсорбции из природного газа с обеспечением десорбции метана в верхних слоях шахты при плавке. Обеспечивается снижение выбросов парниковых газов при выплавке чугуна, повышение тепловой способности угля и тепловой мощности печи.

Состав рудной части шихты для выплавки чугуна в доменной печи

Изобретение относится к черной металлургии, а именно к шихте для выплавки чугуна в доменной печи. Состав рудной части шихты для выплавки чугуна в доменной печи включает железосодержащее сырье, марганецсодержащее сырье и известняк, при этом он дополнительно включает отвальный шлак силикотермической плавки металлического марганца. Снижается удельный расход марганецсодержащего сырья и известняка, сокращается содержание фосфора в чугуне, повышается полезное использование марганца из отвального шлака силикотермической плавки металлического марганца, улучшается экологическая обстановка в районе металлургического предприятия, выплавляющего металлический марганец силикотермическим способом. 1 табл., 1 пр.

СПОСОБ РЕГУЛИРОВАНИЯ ТЕПЛОТЫ СГОРАНИЯ ОТХОДЯЩИХ ГАЗОВ ИЗ УСТАНОВОК ДЛЯ ПОЛУЧЕНИЯ ЧУГУНА ИЛИ ДЛЯ СИНТЕЗ-ГАЗА

... 1. Способ регулирования теплоты сгорания отходящих газов из установок для получения чугуна со встроенными установками для отделения СОили синтез-газа из установок для получения синтез-газа со встроенными установками для отделения СО, причем по меньшей мере часть отходящего газа или соответственно синтез-газа, в качестве утилизируемого газа (12) выводится из установки для получения чугуна или соответственно для получения синтез-газа, при необходимости собирается в резервуаре (13) для утилизируемого газа и впоследствии используется в газовой турбине (28) для генерирования тепловой энергии, причем отходящий газ из газовой турбины подается в использующий тепло отходящих газов парогенератор (29) для получения пара, отличающийся тем, что к утилизируемому газу (12) перед газовой турбиной (28), в частности по обстоятельствам до присоединенного перед газовой турбиной (28) резервуара (13) для утилизируемого газа, в зависимости от величины теплоты сгорания утилизируемого газа после добавления остаточного ...

СПОСОБ УПРАВЛЕНИЯ ПРОЦЕССОМ ПРЕВРАЩЕНИЯ

... 1. Способ микроскопического анализа исходных веществ для процесса превращения, для получения металлов, и/или металлургических полупродуктов, и/или промежуточных продуктов с использованием технологических газов, в отношении их фаз, и/или компонентов, фаз и/или из фазовой морфологии, структуры, текстуры и/или их химического состава, отличающийся тем, что микроскопический анализ проводится в одну или несколько стадий с применением неполяризованных и/или поляризованных электромагнитных волн, в частности света, и/или путем электронной микроскопии, причем многостадийный анализ проводится с поляризованным светом, который на разных стадиях имеет разное направление или направления поляризации. ! 2. Способ по п.1, отличающийся тем, что определяются кристаллическая и/или фазовая морфология идентифицированных фаз, в частности площадь, объем, габитус, удельный объем, пористость, форма пор и число пор, и записываются в банк данных в виде фазовых параметров как основа для технологической конверсии в процессе ...

СПОСОБ ИЗГОТОВЛЕНИЯ УГОЛЬНОЙ ПЫЛИ

... 1. Способ изготовления угольной пыли, содержащий этапы: ! - нагрев сушильного газа в генераторе горячего газа до предварительно заданной температуры, ! - подача нагретого сушильного газа в угольную мельницу, ! - ввод необогащенного угля в угольную мельницу, при этом угольная мельница превращает необогащенный уголь в угольную пыль, ! - сбор смеси сушильного газа и угольной пыли из угольной мельницы и подача смеси на фильтр, при этом фильтр отделяет высушенную угольную пыль от сушильного газа, ! - сбор высушенной угольной пыли для дальнейшего использования и подача части сушильного газа из фильтра на линию рециркуляции для возврата по меньшей мере части сушильного газа в генератор горячего газа, ! при этом способ содержит: ! - цикл запуска, в котором нагретый сушильный газ подают через угольную мельницу без ввода необогащенного угля, и ! - цикл измельчения, в котором нагретый сушильный газ подают через угольную мельницу, и в угольную мельницу вводят необогащенный уголь, ! отличающийся тем ...

СПОСОБ ВДУВАНИЯ АЛЬТЕРНАТИВНЫХ ВОССТАНОВИТЕЛЕЙ В ДОМЕННУЮ ПЕЧЬ

МЕТАЛЛУРГИЧЕСКАЯ УСТАНОВКА С ЭФФЕКТИВНЫМ ИСПОЛЬЗОВАНИЕМ ОТХОДЯЩЕГО ТЕПЛА

... 1. Способ эксплуатации для металлургической установки, которая имеет установку (7), расположенную в процессе изготовления стали перед установкой (8) для производства стали, и газогенераторную установку (1), генерирующую экспортируемый газ (2),- причем содержащуюся в экспортируемом газе (2) двуокись углерода и/или воду в разделительном устройстве (3) по меньшей мере частично удаляют из экспортируемого газа (2), и при этом полученный газ (4) перед подачей на вышерасположенную установку (7) нагревают в топочном устройстве (6) посредством сжигания топочного газа (11),- причем топочный газ (11) подают в топочное устройство (6) в объеме, который значительно больше, чем требуется для нагрева полученного газа (4),- причем получаемую при сжигании топочного газа (11) термическую энергию, если она не применяется для нагрева полученного газа (4), термически используют внутри топочного устройства (6) для производства пара и/или по отношению к газовому потоку дымового газа (12), возникающего при сжигании ...

ВОССТАНОВЛЕНИЕ ОКСИДОВ МЕТАЛЛОВ С ИСПОЛЬЗОВАНИЕМ ГАЗОВОГО ПОТОКА, СОДЕРЖАЩЕГО КАК УГЛЕВОДОРОД, ТАК И ВОДОРОД

... 1. Способ восстановления оксидов металлов с использованием коксового газа,отличающийся тем, чтококсовый газ разделяется на обогащенную водородом фракциюи на обогащенную углеводородом фракцию,и после этогопо меньшей мере одна порция обогащенной углеводородом фракции подвергается обработке по меньшей мере в одной операции из группы- окисления технически чистым кислородом,- риформинга с помощью СОи НО,и затем, по меньшей мере в качестве компонента восстановительного газа, вводится в содержащий оксиды металлов восстановительный реактор,причем содержание углеводорода таким образом регулируется посредством по меньшей мере одной операции из указанной группы,что содержание углеводорода в восстановительном газе на входе в восстановительный реактор составляет ниже 12% по объему, предпочтительно ниже 10% по объему, в особенности предпочтительно ниже 8% по объему, но более 1% по объему, предпочтительно свыше 2% по объему, в особенности предпочтительно более 3% по объему,и причем по меньшей мере одна ...

СПОСОБ ПРОИЗВОДСТВА ПЕРЕДЕЛЬНОГО ЧУГУНА В ДОМЕННОЙ ПЕЧИ С ПРИМЕНЕНИЕМ ГРАНУЛ, СОДЕРЖАЩИХ ТЕРМОПЛАСТИЧНЫЕ И ЦЕЛЛЮЛОЗНЫЕ МАТЕРИАЛЫ

ДОЗАТОР, УСТАНОВКА ДЛЯ ТРАНСПОРТИРОВКИ ПЛОТНОГО ПОТОКА И СПОСОБ ПОДАЧИ ПЫЛЕВИДНОГО НАСЫПНОГО МАТЕРИАЛА

... 1. Дозатор, включающий в себя дозирующую емкость (DB) и, по меньшей мере, один шлюз (S), расположенный выше по потоку, для плавной, непрерывной, дозированной подачи пылевидного насыпного материала из легких, полидисперсных частичек из устройства обеспечения (В, SG) в несколько транспортных труб (FR1, FR2, FR3) к потребителю, расположенному ниже по потоку, причем дозирующая емкость (DB) и шлюз (S) имеют по одному разгрузочному устройству (AE/DB, AE/S), и причем на каждой транспортной трубе (FR1, FR2, FR3) установлен зонд для измерения потока материала (FlC1, FlC2, FlC3), а дозирующее устройство имеет регулятор давления для регулирования разности давлений между дозирующей емкостью (DB) и потребителем, отличающийся тем, что- разгрузочное устройство (AE/DB) дозирующей емкости (DB) для каждой из транспортных труб (FR1, FR2, FR3) имеет ей принадлежащий и в нее входящий регулятор течения пылевидного потока (Fl1, Fl2, Fl3), причем зонд для измерения потока материала (FlC1, FlC2, FlC3) соединен ...

ЗАГРУЗОЧНАЯ УСТАНОВКА ШАХТНОЙ ПЕЧИ

... 1. Загрузочная система доменной печи для подачи шихтового материала в под доменной печи, при этом система содержит по меньшей мере два бункера для временного хранения шихтового материала, при этом каждый бункер содержит агрегат выгрузки для подачи шихтового материала из соответствующего бункера в под доменной печи, при этом агрегат выгрузки содержит:наклонный канал выгрузки, имеющий на его нижнем конце заслонку для материала, обеспечивающую управление потоком шихтового материала на нижнем конце канала выгрузки,защитное кольцо, расположенное рядом с заслонкой для материала для направления шихтового материала от канала выгрузки к седлу уплотнения агрегата выгрузки,нагретую панель, расположенную на защитном кольце, при этом нагретая панель образована выполненным в виде панели медным корпусом, имеющим расположенные внутри него каналы текучей среды с тем, чтобы образовывать канал, ведущий от впускного отверстия текучей среды к выпускному отверстию текучей среды.2. Система по п.1, в которой каналы ...

СПОСОБ ПОЛУЧЕНИЯ ЧУГУНА

Изобретение относится к способу получения чугуна с использованием доменной печи с фурмой. Осуществляют попеременную загрузку в доменную печь первого слоя, содержащего железорудный материал в виде железорудных окатышей в качестве основного материала, и второго слоя, содержащего кокс, и восстановление и расплавление железорудного материала в загруженном первом слое, в то же время с инжекцией вспомогательного восстановителя в доменную печь горячим воздухом, вдуваемым из фурмы. Причем заполнитель, который включает формованные продукты восстановленного железа, полученные формованием восстановленного железа под давлением, и служит для обеспечения газопроницаемых каналов, обеспечивающих проникновение горячего воздуха к центральной части доменной печи, смешивают с первым слоем. Средняя основность формованных продуктов восстановленного железа является меньшей или равной 0,5, и средняя основность железорудных окатышей является большей или равной 0,9. Отношение среднего размера зерен формованных продуктов ...

СПОСОБ ОЦЕНКИ КОЛИЧЕСТВА ПОДАВАЕМОГО ТЕПЛА, УСТРОЙСТВО ДЛЯ ОЦЕНКИ КОЛИЧЕСТВА ПОДАВАЕМОГО ТЕПЛА, ПРОГРАММА ОЦЕНКИ КОЛИЧЕСТВА ПОДАВАЕМОГО ТЕПЛА И СПОСОБ РАБОТЫ ДОМЕННОЙ ПЕЧИ

Группа изобретений относится к способу и устройству для оценки количества тепла, подаваемого к чугуну в доменную печь, и способу управления доменной печью. Оценку количества тепла, подаваемого к чугуну в доменной печи, проводят исходя из количества тепла, подаваемого в доменную печь, и скорости производства расплавленного чугуна в доменной печи. Для точной оценки при значительном изменении интенсивности работы печи осуществляют этап, на котором оценивают изменение физической теплоты, уносимой проходящим внутри печи газом, с учётом количества тепла, выделившегося наружу из доменной печи в результате просачивания газов, этап, на котором оценивают изменение физической теплоты, вносимой сырьевым материалом, подогретым проходящим внутри печи газом, с учётом количества тепла, выделившегося наружу из доменной печи в результате просачивания газов, этап, на котором оценивают количество тепла, удерживаемого в неподвижном слое кокса, находящегося в доменной печи, и этап, на котором оценивают количество ...

Способ доменной плавки

Устройство для подачи горячего газа в доменную печь

УСТРОЙСТВО ДЛЯ ПОДАЧИ ГОРЯЧЕГО ГАЗА В ДОМЕННУЮ ПЕЧЬ, содержащее форму, сопло со встроенным в нем плаэ матроном, отличающееся тем, что, с целью исключения перегре-г ва внутренних поверхностей сопла и фурмы, оно снабжено системой квадру польных магнитных линз, установленных на внепших поверхностях кожуха i сопла и внутреннего стакана фурмы. , СЛ ...

Шихта для доменных печей

Способ регулирования отношения двух компонентов в смеси потоков

Способ доменной плавки

Recycling roll scale - grinds collected scale to be used with coal as fuel dust blown into blast furnace

To recycle roll scale, especially from rolling steel and especially profile steel, the scale is collected and ground to be used as an additive with mineral coal to be blown into a blast furnace. The scale is ground and dried to be blown into the blast furnace as fuel dust. While the scale is being ground, it is pref. contained within an inert atmos. and heat is applied. The roll scale and the mineral coal are ground to less than 0.2 mm and sieved at 0.2 mm. The ground scale is used at a rate of 5-20% of the mineral coal, and pref. 6-8%. The roll scale is partially dried before grinding. The ground scale and mineral coal are blown into the blast furnace while they are still hot. The scale and the coal are ground together, at the same time, in the same grinder. In another form, a small amount of mineral coal is dried and ground and the scale/coal mixt. is mixed on blowing in as a fuel dust, or ground scale is mixed separately with oil for injection into the blast furnace. ADVANTAGE - The ...

Verfahren und Schachtofen zur thermischen Behandlung eines Rohmaterials

Verfahren zum Schmelzen von Rohmaterial in einem Schachtofen, insbesondere Kupolofen, bei dem Behandlungsgas, das im wesentlichen aus Luft besteht, über Winddüsen mit einem konstanten Volumenstrom in den Behandlungsraum des Schachtofens eingeleitet wird, dadurch gekennzeichnet, daß zusätzlich ein weiteres Behandlungsgas, das aus Sauerstoff besteht, zumindest teilweise in Form von gegenüber dem Umgebungsdruck einen hohen Druck aufweisenden Gasimpulsen in den Behandlungsraum eingeleitet wird, wodurch die Einstellung eines Strömungsgleichgewichtes im Behandlungsraum vermieden wird.

Verfahren zum Ersticken gedaempfter Hochoefen

Verfahren zum Betreiben eines Hochofens.

Verfahren und Vorrichtung zum Betreiben eines Direktreduktionsreaktors zur Herstellung von direkt reduziertem Eisen aus Eisenerz

Die Erfindung betrifft ein Verfahren zum Betreiben eines Direktreduktionsreaktors (1) zur Herstellung von direktreduziertem Eisen (2) aus Eisenerz (3), wobei das bei der Herstellung von direktreduziertem Eisen (2) entstehende CO- und HO-haltige Gichtgas (4) aus dem Direktreduktionsreaktor (1) entfernt wird, dadurch gekennzeichnet, dass das CO- und HO-haltige Gichtgas (4) einer Hochtemperaturelektrolysezelle (5) zugeführt wird, in welcher mittels Co-Elektrolyse CO und Henthaltendes Synthesegas (6) und Sauerstoff (7) erzeugt werden.

Verfahren zum Foerdern von Gichtstaub und anderen Feinerzen im Hochofenbetrieb

Verfahren zum Betriebe von Schachtoefen

Verfahren zur Herstellung von flüssigem Roheisen oder Stahlvormaterial

Blasrohrkonstruktion

Bereitgestellt ist eine Blasrohrkonstruktion für eine Hochofenanlage, die derart ausgelegt ist, dass sie in der Lage ist, eine Schlackeanhaftung unter Verwendung einer einfachen Konstruktion zu unterbinden, auch wenn Staubkohle mit einer nicht eingestellten Erweichungstemperatur verwendet wird. Die Blasrohrkonstruktion ist an einer Blasform (2) für einen Hochofen-Hauptteil (20), der Roheisen aus Eisenerz erzeugt, angebracht, wobei die Blasrohrkonstruktion eine Hilfsbrennstoff-Staubkohle (3) zusammen mit Heißluft (2) einbläst und wobei die Schlacke von der Staubkohle (3) einen Bestandteil enthält, der aufgrund der Heißluft (2) und/oder der Verbrennungswärme von Staubkohle (3) schmilzt. Ein Widerstand (80), der einen Strömungswegwiderstand auf der Seite der Rohrinnenwandfläche erhöht und die Strömungen der Heißluft (2) und der Staubkohle (3) auf die Strömungswegachsenmitte konzentriert, ist auf der stromabwärtigen Seite einer Einblaslanze (31), die Staubkohle (3) in das Blasrohr (30) einbläst ...

Verfahren zum Betrieb eines mit Koks betriebenen Schachtofens zur Herstellung hochwertiger Eisen- und Gusseisensorten

VERFAHREN ZUR NOTVERSORGUNG DER FEUERUNG EINES DIE ANTRIEBSTURBINE EINES VERDICHTERS SPEISENDEN DAMPFKESSELS MIT BRENNLUFT UND VORRICHTUNG ZUR DURCHFUEHRUNG DES VERFAHRENS

VERFAHREN ZUR HERSTELLUNG EINER METALLMASSE, METALLURGISCHES PRODUKT UND DESSEN VERWENDUNG

Verfahren zum Betrieb eines Ofens

VERFAHREN ZUR BEEINFLUSSUNG DER TEMPERATURVERTEILUNG DER BESCHICKUNGSOBERFLAECHE IN EINEM SCHACHTOFEN INSBESONDERE HOCHOFEN

Hochofen und Verfahren zum Betrieb eines Hochofens

Die vorliegende Erfindung ist darauf gerichtet, einen Hochofen und ein Verfahren zum Betrieb eines Hochofens zu schaffen, welche dazu geeignet sind, den CO2-Ausstoß sowie die Menge der Zuschlagsstoffe und Heizstoffe im Vergleich zu derzeit verwendeten Hüttenwerken zu verringern. Die Aufgabe wird gelöst durch einen Prozess zum Aufbereiten von Metallerzen, der folgende Schritte aufweist: Reduktion eines Metallerzes, insbesondere eines Metalloxids; Erzeugen von Gichtgas, das CO2 enthält, in einem Hochofenschacht; Ableiten des Gichtgases aus dem Hochofen; Leiten von wenigstens einem Teil des Gichtgases direkt oder indirekt zu einem CO2-Konverter und Reduzieren des im Gichtgas enthaltenen CO2 zu CO in dem CO2-Konverter; und Leiten wenigstens eines ersten Teils des CO aus dem CO2-Konverter in den Hochofenschacht. Neben der Lösung der oben genannten Aufgabe wird durch den Prozess CO als gasförmiges Reduktionsmittel erzeugt, welches leicht in den Hochofenschacht einzubringen ist. Ein Hochofen zur ...

Verfahren zur Vernichtung von Gummiabfaellen,insbesondere von abgenutzten Kraftfahrzeugreifen,unter industrieller Neuverwertung ihrer Bestandteile und Zersetzungsprodukte

VERFAHREN ZUR REGELUNG VON MASSENSTROEMEN

VERFAHREN ZUR HERSTELLUNG VON FLUESSIGEM ROHEISEN ODER STAHLVORMATERIAL

ZUFUEHRSYSTEM FUER IM GASSTROM MITGEFUEHRTES PARTIKELFOERMIGES MATERIAL

Smelting residual materials in a vertical furnace comprises operating the furnace with a hot wind and a combined oxygen injection/enrichment of the wind, and adjusting the heat profile in the furnace

Smelting residual materials in a vertical furnace comprises operating the furnace with a hot wind and a combined O2-injection/O2-enrichment of the wind with very high O2 additions, and adjusting the heat profile in the furnace so that the region is extended with temperatures of more than 1000 deg C in which the direct reduction takes place and the dwell time of the materials to be smelted in the zone of direct reduction is at least 20 minutes. The residual agglomerates contain materials held on carbon supports and have the form and parameters suited to the iron-containing materials to be smelted.

APPARATUS AND METHOD FOR FEEDING PULVERISED COAL INTO AN AIR LINE TO A BLAST FURNACE

Füllstandsüberwachung in einem Schmelzreduktionsofen

Vorrichtung (1) und Verfahren zum Einschmelzen metallischer Einsatzmaterialien (E), wobei die Vorrichtung (1) aufweist: ein Ofengefäß (10) zur Aufnahme und zum Einschmelzen der Einsatzmaterialien (E), wodurch das Ofengefäß (10) im Betrieb Füllgut (F) enthält; einen oder mehrere Sensoren (30), die eingerichtet sind, um die Füllhöhe des Füllguts (F) an mehreren Stellen im Ofengefäß (10) zu messen; und eine Datenverarbeitungseinrichtung (40), die eingerichtet ist, um Messdaten der Sensoren (30) zu empfangen und aus den empfangenen Messdaten eine Repräsentation, vorzugsweise eine dreidimensionale Repräsentation, des Höhenprofils des Füllguts (F) im Ofengefäß (10) zu erstellen.

Anlagenverbund zur Stahlerzeugung sowie ein Verfahren zum Betreiben des Anlagenverbundes

Die vorliegende Erfindung betrifft einen Anlagenverbund zur Stahlerzeugung mit einem Hochofen (1) zur Roheisenerzeugung, einem Konverterstahlwerk (2) zur Rohstahlerzeugung, einem Verbundleitungssystem (3) für Gase, die bei der Roheisenerzeugung und/oder der Rohstahlerzeugung anfallen, eine an das Verbundleitungssystem (3) angeschlossene Chemieanlage (4) und eine an das Verbundleitungssystem (3) angeschlossene Biotechnologieanlage (5), wobei der Anlagenverbund eine Reihenschaltung der an das Verbundleitungssystem (3) angeschlossenen Chemieanlage (4) und der an das Verbundleitungssystem (3) angeschlossenen Biotechnologieanlage (5) umfasst.

DEVICE FOR THE METERED TRANSPORTATION OF PULVERULENT MATTER

Equipment for metered transport of pulverulent material, esp. small amts. of coal dust e.g. into furnaces, includes a tubular transport device (2) with a coal dust filling opening (3) and a discharge side closed by a diffusion cone (4). The diffusion cone (4) has one or more coal dust outlet openings (30), which diverge in the direction towards the discharge side of the transport device (2), and the same number of compressed gas injector pipes (32), which extend through the transport device to face the outlet openings (30) and which are adjustable relative to the outlet openings.

VERFAHREN UND VORRICHTUNG ZUM EINBRINGEN FLUESSIGER BRENNSTOFFE IN EINEN HOCHOFEN

Verfahren und Einrichtung zur Regelung des Gasdurchgangs bei Schachtoefen, insbesondere bei Hochoefen

Erzeugung von Phosphor in Schachtoefen

Verhuettung von Eisenerz mittels zusaetzlicher OElzerstaeubung

Rotary feed valve for c-reducing mill scale

Carbon content controlled in metal smelters is carried out by supplying mill scale etc. out of a container via feed valve with rotor and blades to crush oversize and feed out along a gas pressure channel into the smelting vessel. The chute feeding into the lance used to inject the material into the steel is connected to a gas source and issues into the lance at its two ends respectively. The bladed rotor can be reversed to clear the entry or outlet to or from the rotary feed valve.

Verfahren zum UEberwachen dynamischer Vorgaenge

LANZE ZUR ZERSTAEUBUNG FLUESSIGER BRENNSTOFFE

Apparatus for Introducing Powdered Fuel into Fire Boxes of Locomotive or other Boilers.

... 127,547. Marks, E. C. R., (Fuel Saving Co.). April 26, 1918. Fuel, feeding.-Pulverulent fuel is supplied to the fire-box of a locomotive or other boiler through a conduit having a section of larger diameter adjacent the fire-box for the purpose of reducing the velocity of and diffusing the fuel-carrying medium, the enlarged section being provided with apertures for the admission of air. As shown in Fig. 1, fuel falls from the hopper 85 into the conduit 83, which is open to the atmosphere at its outer end and is connected at its inner end to an enlarged chamber 82 secured to the firing opening 80 of the fire-box. Air is drawn into the conduit 83 mainly by the furnace draught, and to ensure thorough mixing of the fuel and air steam, air, or other fluid under pressure is introduced through a perforated coiled pipe 86 located at the open end of the conduit 83. Air is introduced to the enlarged chamber 82 through forwardlydirected openings 90, 91, and also through openings (not shown) in the ...

PRODUCTION OF REDUCING GAS MIXTURE

... 1409277 Production of reducing gas TEXACO DEVELOPMENT CORP 6 Oct 1972 [23 Dec 1971] 46174/72 Heading C5E A reducing gas mixture principally comprising carbon monoxide and hydrogen and containing a minor amount of particulate carbon is produced by (1) reacting a hydrocarbon fuel with an oxygen-containing gas by partial oxidation, in a free-flow reaction zone of a reducing gas generator at an autogenous temperature of 1500‹ to 3500‹ F. and a pressure of 1 to 350 atmospheres; (2) mixing, in a separate mixing zone, e.g. a separate vessel containing no obstruction to the free flow of the gas stream, effluent reducing gas leaving the free-flow reaction zone with an upgraded gas mixture recovered subsequently in the process to produce an improved reducing gas mixture containing less water vapour and particulate carbon than the effluent reducing gas; (3) introducing a portion of the improved reducing gas mixture into a gas-cooling and scrubbing zone located downstream from the mixing zone; and ...

Blast furnace plant

Improvements in vertical blast furnaces

... 634,784. Shaft furnaces. RICHARDSON, L. J. Oct. 22, 1946, Nos. 31411 and 31412. Convention dates, Oct. 25, 1945 and Nov. 19, 1945. [Class 51 (ii)] [Also in Group XIII] A vertical enclosed blast furnace for smelting ore, provided with a mechanical feeding device, or a series of mechanical feeding devices, the or each device being arranged to propel charge material laterally into the furnace cavity at or immediately above the' fusion zone and being adapted to seal the furnace cavity from the atmosphere continuously at the feeding point or points, the or each device being so constructed and positioned that throughout operation of the furnace, a shielding body of charge material is present between the or each device and the cavity. The invention is shown applied to a blast furnace suitable for the extraction of lean chromium ores in which four feed tubes 9 are disposed symmetrically around the furnace, their apertures 8 being disposed at a level which is at or immediately above the fusion zone ...

Improvements in or relating to blast furnaces and like shaft furnaces

... 678,530. Blast furnaces. LEONE, O. J., and LEONE, D. P. Feb. 13,1950, No. 3677/50. Class 72 [Also in Group XXXV] In a method of controlling a blast furnace the static pressure is measured near the bottom and near the top of the'stack and the pressure drop is controlled'to a value below that at which the furnace has a tendency to generate slipping conditions by selective variation of the temperature, pressure and rate of flow of the gases at the top and bottom of the stack. As shown, the static pressure may be measured at point 11 in the blast pipe and at point 12 in the exhaust pipe, these pressures being fed into a controller 10, which may or may not be recording, and which operates a valve 19 in the exhaust pipe to control the static pressure in the stack. The temperature of the blast may be measured by a thermostat 30 in the blast pipe, controlling the amount of air which byepasses an air heater 7. The points of measuring the pressure may be in the stack and the blast pressure may be ...

A method for heating a blast furnace stove

Improvements in or relating to blast furnaces and cupola furnaces

... 374,847. Purifying ; refining. L. F. T. FONDERIES, 36, Route de Flandre, La Courneuve, Seine, France. March 6, 1931, No. 7063. Convention date, Nov. 22, 1930. [Class 72.] In a blast furnace or cupola furnace the gases produced escape through a stack with which is associated an injector fed with air under pressure, by means of which a portion of the gases in admixture with air are returned to the fusion zone of the furnace, the remainder of the gases continuing through the stack. The upper opening of the furnace is normally closed by a double valve 21, Fig. 3, and the gases produced escape by way of pipes 13, 17, 15 to a stack 16. An injector 7 supplied with air from a pipe 4 entrains a portion of the gases from the pipe 13, and returns them to the furnace through tuyeres 10. Another injector 18a draws a portion of the gases through a heat exchange chamber 18 in which they are burnt to heat the air supply for the injector 7. Molten iron collecting in the hearth 3 may be drawn off for casting ...

Method of Operating a Blast Furnace.

... 1,178,287. Blast furnace process. BAILEY INVENTIONS, Inc. Aug.16, 1967, No.37816/67. Heading C7D. [Also in Division F4] In a blast furnace process for extracting iron the solid carbonaceous fuel is encased in a multiplicity of individual gas-impervious containers made of metal having a melting point greater than 2200‹ C., so that the fuel remains out of contact with oxidizing agents until it reaches the hot reduction zone of the furnace. By this means the latent heat of the waste gases may be recovered in the furnace by combusting them with secondary air admitted to the upper preheating zone of the furnace. The containers may be made of iron, steel, or a metal which alloys with the iron produced. In the particular embodiment described and illustrated, the additional heat recovered by the invention is used in part to preheat both the primary and secondary air supplies by means of a double air heater surmounting the furnace.

METHOD AND APPARATUS FOR BLOWING A REDUCING GAS INTO A BLAST FURNACE

... 1277606 Treating gases with liquids FUJI IRON & STEEL CO Ltd 20 Nov 1969 [20 Nov 1968 (2) 6 Feb 1969 20 Feb 1969 (2)] 56872/69 Heading B1R [Also in Divisions C5 and C7] An apparatus for washing and cooling a gas from a gasifier comprises a chamber 61 into which a gas inlet pipe 8 depends, a cylinder 63 surmounted by a water-vapour separating plate 68 surrounding the end 62 of the pipe 8. Water is delivered at 66 and a controller LTC regulates the water level in the chamber 61 by actuating a valve 65 on a water outlet pipe 64. Cooled gas leaves at 67.

PRODUCTION OF PIG IRON

... 1433322 Restarting a cold blast furnace SYDNEY STEEL CORP 5 June 1974 24859/74 Heading C7D In order to restart a cold blast furnace there is introduced into each of the slag and iron notches and sealed a lance comprising inner and outer tubes with an annular passage between them. Oxygen is blown in through the inner tube and hydrocarbon fuel through the outer passage so that it surrounds the oxygen, the proportions being initially such as to heat the burden and then being adjusted so as to oxidize the iron and initiate exothermic reactions whereby iron and slag are melted. Preferably the lance is removed from the slag notch when communication is established between the latter and the tuyeres, thereby allowing metal and slag to flow; hot blast is then started and the second lance removed when communication is established between iron notch and tuyeres.

Improvements in the operation of blast furnaces, particularly for the purpose of reducing the ore softening zone

... 700,508. Blast furnace processes. BESCH P. N. Sep. 15, 1950, No. 22713/50. Class 72 [Also in Group XII] The operation of blast furnaces is improved by insufflating, at the periphery and below the belly of the furnace, a fluid capable of reacting endothermically with the coke at a point where the ascending gas temperature is between 1520‹C. and 1580‹C. to form an endothermic peripheral screen so that the zone in which the materials become plastic is removed from the walls and an annular zone of a temperature below that at which the charge becomes plastic is formed,. The fluid may be carbon dioxide, limekiln gas, burnt gas from furnaces, water, water vapour, or steam. The insufflation tuyeres may be arranged in the bosh, but it is preferred to increase the height of the well and arrange the tuyeres below the small diameter of the bosh. As shown, the well g2 has at its upper end an inwardly sloping truncated portion h leading to a collar i of smaller diameter than the well and forming the ...

Process for the gasification of sewage sludge

A process for the gasification of sewage sludge or other carbon-containing waste materials in a gasifier (1) is described. A solid fuel and oxygen-containing gas are also fed into said gasifier. The residues formed during gasification collect at the bottom of the gasifier in the form of molten slag. Gasification takes place in a fluidized bed (9) formed above the slag bath and constituted by the dried sewage sludge or waste materials, the solid fuel, the oxygen-containing gas and the gasification gas. The gas produced in the gasifier can be used for power generation or as a reducing gas for iron ore. Sponge iron can simultaneously be melted in the gasifier and reduced to pig iron.

METHOD OF INJECTING FUEL OIL INTO A BLAST OR SIMILAR METALLURGICAL FURNACE AND SUCH FURNACES FOR CARRYING OUT THE METHOD

... 1373540 Injecting free oil in furnaces, fuel atomisation F AKLUTH 19 Oet 1971 [21 Oct 1970] 48486/71 Headings F4B and F4T Oil is added to the air blast of a blast or like furnace near the tip of the tuyere 11, the oil being injected into the tuyere blast from a nozzle 1 at the centre of the tuyÞre in one or more jets at right angles to the direction of the blast, the jets having a velocity high enough to remain intact until they reach a zone near the inner wall of the tuyere, but breaking up before reaching the wall. Instead of being at right angles to the blast the jets may be directed backwards at an angle against the blast. The oil 13, Fig. 2, which may be mixed with up to 15% by weight of water or steam is forced under pressure into an eddy chamber 3 which creates turbulence in the oil stream. The flow of oil along the injection lance cools it and prevents decomposition of the oil and clogging of the nozzles.

FLUID DISTRIBUTOR

КОМПЛЕКС ДОМЕННОЙ ПЕЧИ ДЛЯ ПРОИЗВОДСТВА ЧУГУНА ИЗ ТИТАНСОДЕРЖАЩЕГО ЖЕЛЕЗОРУДНОГО СЫРЬЯ

Комплекс доменной печи для производства чугуна из титансодержащего железорудного сырья, включающий доменную печь, системы загрузки железорудных материалов, кокса и добавок подачи комбинированного дутья, отвода колошникового газа и уборки продуктов плавки, отличающийся тем, что содержит дополнительно информационно связанные блоки контроля: времени совместного выпуска чугуна и шлака через чугунную летку и содержания титана в первых порциях шлака, формирующие команду для блока загрузки добавок, содержащих МnО или FeO в виде трудновосстановимых соединений. (19) RU (11) 20 652 (13) U1 (51) МПК C21B 5/02 (2000.01) РОССИЙСКОЕ АГЕНТСТВО ПО ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К СВИДЕТЕЛЬСТВУ (21), (22) Заявка: 2001114009/20 , 21.05.2001 (24) Дата начала отсчета срока действия патента: 21.05.2001 (46) Опубликовано: 20.11.2001 (57) Формула полезной модели Комплекс доменной печи для производства чугуна из титансодержащего железорудного сырья, включающий доменную печь, системы загрузки железорудных материалов, кокса и добавок подачи комбинированного дутья, отвода колошникового газа и уборки продуктов плавки, отличающийся тем, что содержит дополнительно информационно связанные блоки контроля: времени совместного выпуска чугуна и шлака через чугунную летку и содержания титана в первых порциях шлака, формирующие команду для блока загрузки добавок, содержащих МnО или FeO в виде трудновосстановимых соединений. R U 2 0 6 5 2 (54) КОМПЛЕКС ДОМЕННОЙ ПЕЧИ ДЛЯ ПРОИЗВОДСТВА ЧУГУНА ИЗ ТИТАНСОДЕРЖАЩЕГО ЖЕЛЕЗОРУДНОГО СЫРЬЯ Ñòðàíèöà: 1 U 1 U 1 (73) Патентообладатель(и): ОАО "Металлургический завод им. А.К. Серова" 2 0 6 5 2 (72) Автор(ы): Волков В.Н., Гилева Л.Ю., Горбатова Л.И., Загайнов С.А., Ильиных Г.И., Касьян В.И., Кукарских В.А., Онорин О.П., Турлаев В.В., Чертовиков В.А. R U Адрес для переписки: 620027, г.Екатеринбург, ул. Свердлова, 14, кв.56, С.А.Загайнову (71) Заявитель(и): ОАО "Металлургический завод им. А.К. Серова" U 1 U 1 2 0 6 5 2 2 0 6 5 2 R U R U ...

КОМПЛЕКС ДОМЕННОЙ ПЕЧИ ДЛЯ ПРОИЗВОДСТВА ЧУГУНА ИЗ ЖЕЛЕЗОРУДНОГО СЫРЬЯ С ЧАСТИЧНОЙ ЗАМЕНОЙ КОКСА КАМЕННЫМ УГЛЕМ

Комплекс доменной печи для производства чугуна из железорудного сырья с частичной заменой кокса каменным углем, включающий доменную печь, системы загрузки железорудных материалов, кокса, каменного угля и добавок, подачи комбинированного дутья, отвода колошникового газа и уборки продуктов плавки, отличающийся тем, что в него дополнительно входят блок контроля состояния горна, блок дозирования и загрузки каменного угля и блок дозирования и загрузки добавок, содержащих MnO или FeO в виде трудновосстановимых соединений, причем оба блока дозирования и загрузки связаны обратной связью с блоком контроля состояния горна. (19) RU (11) 36 831 (13) U1 (51) МПК C21B 5/02 (2000.01) РОССИЙСКОЕ АГЕНТСТВО ПО ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ (21), (22) Заявка: 2003123383/20 , 05.08.2003 (24) Дата начала отсчета срока действия патента: 05.08.2003 (46) Опубликовано: 27.03.2004 U 1 3 6 8 3 1 R U (57) Формула полезной модели Комплекс доменной печи для производства чугуна из железорудного сырья с частичной заменой кокса каменным углем, включающий доменную печь, системы загрузки железорудных материалов, кокса, каменного угля и добавок, подачи комбинированного дутья, отвода колошникового газа и уборки продуктов плавки, отличающийся тем, что в него дополнительно входят блок контроля состояния горна, блок дозирования и загрузки каменного угля и блок дозирования и загрузки добавок, содержащих MnO или FeO в виде трудновосстановимых соединений, причем оба блока дозирования и загрузки связаны обратной связью с блоком контроля состояния горна. Ñòðàíèöà: 1 U 1 (54) КОМПЛЕКС ДОМЕННОЙ ПЕЧИ ДЛЯ ПРОИЗВОДСТВА ЧУГУНА ИЗ ЖЕЛЕЗОРУДНОГО СЫРЬЯ С ЧАСТИЧНОЙ ЗАМЕНОЙ КОКСА КАМЕННЫМ УГЛЕМ 3 6 8 3 1 (73) Патентообладатель(и): Открытое акционерное общество "Металлургический завод им. А.К. Серова", Общество с ограниченной ответственностью "Горностроительный холдинг", Государственное образовательное учреждение высшего профессионального образоваания "Уральская государственная горно- ...

КОМПЛЕКС ДЛЯ ПРОИЗВОДСТВА ПЕРЕДЕЛЬНОГО И ВАНАДИЕВОГО ЧУГУНА

Комплекс для производства передельного и ванадиевого чугуна, включающий аглофабрику, доменные печи с системами загрузки, отсева мелкой фракции железорудных материалов и пылеулавливания, отличающийся тем, что в нем дополнительно предусмотрены система складирования ванадийсодержащих отсева агломерата и колошниковой пыли для производства железофлюса; блок выбора состава железофлюса; система подачи железофлюса в доменные печи. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 84 382 U1 (51) МПК C21B 5/02 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ, ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ (21), (22) Заявка: 2009102910/22, 29.01.2009 (24) Дата начала отсчета срока действия патента: 29.01.2009 (45) Опубликовано: 10.07.2009 8 4 3 8 2 (73) Патентообладатель(и): Открытое акционерное общество "Нижнетагильский металлургический комбинат" (ОАО "НТМК") (RU) R U Адрес для переписки: 622025, Свердловская обл., г. Нижний Тагил, ул. Металлургов, 1, ОАО "НТМК", ОРИП, Ю.Д. Исупову (72) Автор(ы): Киричков Анатолий Александрович (RU), Филиппов Валентин Васильевич (RU), Тлеугабулов Борис Сулейманович (RU), Кушнарев Алексей Владиславович (RU), Мухатдинов Насибулла Хадиатович (RU), Гильманов Марат Риматович (RU), Напольских Сергей Александрович (RU), Сухарев Анатолий Григорьевич (RU), Загайнов Сергей Александрович (RU), Николаев Федор Павлович (RU) 8 4 3 8 2 R U Формула полезной модели Комплекс для производства передельного и ванадиевого чугуна, включающий аглофабрику, доменные печи с системами загрузки, отсева мелкой фракции железорудных материалов и пылеулавливания, отличающийся тем, что в нем дополнительно предусмотрены система складирования ванадийсодержащих отсева агломерата и колошниковой пыли для производства железофлюса; блок выбора состава железофлюса; система подачи железофлюса в доменные печи. Ñòðàíèöà: 1 ru CL U 1 U 1 (54) КОМПЛЕКС ДЛЯ ПРОИЗВОДСТВА ПЕРЕДЕЛЬНОГО И ВАНАДИЕВОГО ЧУГУНА U 1 U 1 8 4 3 8 2 8 4 3 8 2 R U R U Ñòðàíèöà: 2 RU 5 10 15 20 25 ...

КОМПЛЕКС ДЛЯ ПРОИЗВОДСТВА ВАНАДИЕВОГО ЧУГУНА

Комплекс для производства ванадиевого чугуна, включающий систему складирования железованадийсодержащих отходов, систему окускования, доменные печи с системами загрузки, отсева мелкой фракции железорудных материалов и пылеулавливания, отличающийся тем, что в нем дополнительно предусмотрены блок анализа работы доменных печей, блок выбора состава и количества окускованного флюса, система выбора количества использования привозного сырья. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 103 358 (13) U1 (51) МПК C21B 5/02 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ, ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ (21)(22) Заявка: 2010124916/02, 17.06.2010 (24) Дата начала отсчета срока действия патента: 17.06.2010 (45) Опубликовано: 10.04.2011 (73) Патентообладатель(и): Открытое акционерное общество "Нижнетагильский металлургический комбинат" (ОАО "НТМК") (RU) 1 0 3 3 5 8 R U Формула полезной модели Комплекс для производства ванадиевого чугуна, включающий систему складирования железованадийсодержащих отходов, систему окускования, доменные печи с системами загрузки, отсева мелкой фракции железорудных материалов и пылеулавливания, отличающийся тем, что в нем дополнительно предусмотрены блок анализа работы доменных печей, блок выбора состава и количества окускованного флюса, система выбора количества использования привозного сырья. Ñòðàíèöà: 1 ru CL U 1 U 1 (54) КОМПЛЕКС ДЛЯ ПРОИЗВОДСТВА ВАНАДИЕВОГО ЧУГУНА 1 0 3 3 5 8 Адрес для переписки: 622025, Свердловская обл., г. Нижний Тагил, ул. Металлургов, 1, НТМК, патентное бюро ТУ, Ю.Д. Исупову R U Приоритет(ы): (22) Дата подачи заявки: 17.06.2010 (72) Автор(ы): Киричков Анатолий Александрович (RU), Гильманов Марат Риматович (RU), Загайнов Сергей Александрович (RU), Михалев Владислав Анатольевич (RU), Николаев Федор Павлович (RU), Тлеугабулов Борис Сулейманович (RU), Филатов Сергей Васильевич (RU), Филиппов Валентин Васильевич (RU) U 1 U 1 1 0 3 3 5 8 1 0 3 3 5 8 R U R U Ñòðàíèöà: 2 RU 5 10 15 20 25 30 35 40 ...

СИСТЕМА ПОДГОТОВКИ ПРИРОДНО-ДОМЕННОЙ СМЕСИ НА МЕТАЛЛУРГИЧЕСКОМ КОМБИНАТЕ

Система подготовки природно-доменной смеси на металлургическом комбинате, содержащая газораспределительную станцию, соединенную трубопроводом с потребителями природного газа, блок производства очищенного доменного газа, соединенный трубопроводом с потребителями очищенного доменного газа, газосмесительную станцию, соединенную трубопроводом с потребителями природно-доменной смеси и паровые котлы теплоэлектроцентрали, отличающаяся тем, что она снабжена теплообменным аппаратом, первый вход которого соединен с трубопроводом очищенного доменного газа, второй вход - с трубопроводом природного газа, а первый выход из теплообменного аппарата соединен трубопроводом с первым входом в газосмесительную станцию, второй выход - со вторым входом в газосмесительную станцию. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 105 293 (13) U1 (51) МПК C21B 5/06 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ, ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ (21)(22) Заявка: 2010152723/02, 23.12.2010 (24) Дата начала отсчета срока действия патента: 23.12.2010 (45) Опубликовано: 10.06.2011 1 0 5 2 9 3 R U Формула полезной модели Система подготовки природно-доменной смеси на металлургическом комбинате, содержащая газораспределительную станцию, соединенную трубопроводом с потребителями природного газа, блок производства очищенного доменного газа, соединенный трубопроводом с потребителями очищенного доменного газа, газосмесительную станцию, соединенную трубопроводом с потребителями природно-доменной смеси и паровые котлы теплоэлектроцентрали, отличающаяся тем, что она снабжена теплообменным аппаратом, первый вход которого соединен с трубопроводом очищенного доменного газа, второй вход - с трубопроводом природного газа, а первый выход из теплообменного аппарата соединен трубопроводом с первым входом в газосмесительную станцию, второй выход - со вторым входом в газосмесительную станцию. Ñòðàíèöà: 1 ru CL U 1 U 1 (54) СИСТЕМА ПОДГОТОВКИ ПРИРОДНО-ДОМЕННОЙ СМЕСИ НА ...

Method for feeding a burden to a blast furnace

The present invention proposes a method for feeding a burden to a blast furnace ( 32 ), wherein the method comprises providing a charging device ( 38 ) having at least one material hopper ( 40 ), the material hopper ( 40 ) comprising a hopper chamber ( 42 ), a material inlet aperture for feeding a burden into the hopper chamber ( 40 ), and a material discharge aperture for feeding a burden from the hopper chamber ( 40 ) to the blast furnace ( 32 ); the material inlet aperture having an associated inlet seal valve 44 ) for opening and closing the material inlet aperture and the material discharge aperture having an associated material discharge valve ( 46 ) for opening and closing the material discharge aperture. The method further comprises opening the material inlet aperture and closing the material discharge aperture; feeding a burden into the hopper chamber ( 40 ) through the material inlet aperture; closing the inlet seal valve ( 44 ); pressurizing the hopper chamber ( 40 ) by feeding pressurizing gas into the hopper chamber ( 40 ); and opening the material discharge valve ( 46 ) and feeding the burden from the hopper chamber ( 40 ) to the blast furnace ( 32 ). According to an important aspect of the invention, the method comprises feeding a predetermined amount of pressurized flushing gas through the hopper chamber ( 42 ) before pressurizing the hopper chamber ( 42 ), wherein the flushing gas comprises at least 75% carbon dioxide.

Method for feeding a burden to a blast furnace

The present invention proposes a method for feeding a burden to a blast furnace ( 32 ), wherein the method comprises providing a charging device ( 38 ) having at least one material hopper ( 40 ), the material hopper ( 40 ) comprising a hopper chamber ( 42 ), a material inlet aperture for feeding a burden into the hopper chamber ( 40 ), and a material discharge aperture for feeding a burden from the hopper chamber ( 40 ) to the blast furnace ( 32 ); the material inlet aperture having an associated inlet seal valve 44 ) for opening and closing the material inlet aperture and the material discharge aperture having an associated material discharge valve ( 46 ) for opening and closing the material discharge aperture. The method further comprises opening the material inlet aperture and closing the material discharge aperture; feeding a burden into the hopper chamber ( 40 ) through the material inlet aperture; closing the inlet seal valve ( 44 ); pressurizing the hopper chamber ( 40 ) by feeding pressurizing gas into the hopper chamber ( 40 ); and opening the material discharge valve ( 46 ) and feeding the burden from the hopper chamber ( 40 ) to the blast furnace ( 32 ). According to an important aspect of the invention, the method further comprises subjecting at least a portion of a top gas recovered from the blast furnace ( 32 ) to a recycling process wherein carbon dioxide is removed from the recovered top gas; and feeding at least a portion of the recovered carbon dioxide as pressurizing gas into the hopper chamber ( 40 ) for pressurizing the hopper chamber ( 40 ).

Blast furnace top gas recycling process and corresponding recycling equipment

The invention mainly relates to a process for recycling blast furnace gas in which at least one portion of the gases resulting from the blast furnace undergo a CO 2 purification step so as to create a CO-rich gas which is reinjected at a first top injection point located above the base of the blast furnace at a temperature between 700° C. and 1000° C. through a top injection line, and at a second bottom injection point at the base of the blast furnace at a temperature between 1000° C. and 1300° C. through a bottom injection line, in which the gases from the bottom and top injection lines are heated by means of heaters from which the gases emerge at a temperature between 1000° C. and 1300° C. The process of the invention is essentially characterized in that a portion of the CO-rich gas ( 18 ) exiting the purification step is directly introduced into the top injection line ( 21 ) via a cold gas injection line ( 35 ) in order to obtain a temperature between 700° C. and 1000° C. at the first top injection point ( 20 ), and in that the gas flows through the bottom injection point ( 22 ) and top injection point ( 20 ) are controlled upstream of the system of heaters ( 30,33; 45 ). The invention also relates to a device that implements the aforementioned process.

Metering system, dense phase conveying system and method for supplying bulk material in powder form

The present invention relates to a metering system for the steady, continuous, dosed supply of a bulk material in powder form made of light, polydisperse particles from a supply device (B, SG) into a plurality of conveying tubes (FR 1 , FR 2 , FR 3 ) to a consumer arranged downstream. The metering system comprises at least two metering containers (DB 1 , DB 2 , DB 3 ) each having a delivery device (AE 2/1 , AE 2/2 , AE 2/3 ), the delivery device (AE 2/1 , AE 2/2 , AE 2/3 ) for each of the conveying tubes (FR 1 , FR 2 , FR 3 ) comprising a dust flow regulation device (FI 1/1 , FI 2/1 , FI 3/2 ), which is assigned thereto and opens therein, and a mass flow measuring probe (FIC 1 , FIC 2 , FIC 3 ) being arranged on each of the conveying tubes (FR 1 , FR 2 , FR 3 ), which is coupled to the dust flow regulation device (FI 1/1 to FI 3/2 ) which opens into the corresponding conveying tube (FR 1 , FR 2 , FR 3 ). Furthermore, the metering system has a pressure regulation device, which is coupled to the pressure measuring devices (PI 1/1 , PI 1/2 , PI 1/3 ) arranged on the delivery devices (AE 2/1 , AE 2/2 , AE 2/3 ), and which controls a metering container pressure (PIS 2/1 , PIS 2/2 , PIS 2/3 ) at least as a function of a metering container fill level (LIS 1 , LIS 2 , LIS 3 ). A pump device (V) can be coupled to each of the metering containers (DB 1 , DB 2 , DB 3 ), which provides a pressure (PIS 2/1 , PIS 2/2 , PIS 2/3 ) in the metering container (DB 1 , DB 2 , DB 3 ), which is less than a pressure in the supply device (B, SG). Furthermore, the invention discloses a dense phase conveying system, which comprises the metering system and a method for the steady, continuous, dosed supply of a bulk material in powder form made of light, polydisperse particles.

Method for producing pressed articles containing coal particles

A method for producing pressed articles containing coal particles, pressed articles obtained from such method, and the use of such pressed articles in methods for producing pig iron in a fixed bed or for producing carbon carriers for methods for producing pig iron in a fixed bed, are provided. To this end, a partial amount of the coal particles to be processed into pressed articles is impregnated with a substance before the material to be processed into pressed articles is mixed with a binder system containing water and finally being processed into pressed articles.

Process for operating a blast furnace installation with top gas recycling

Blast furnace installation having top gas recycling and process for operating same, in which the oxygen concentration of the oxidizing gas injected into the blast furnace is regulated as a function of the flow rate of the recycled top gas

Process for regulating joule value of offgases from plants for pig iron production or of synthesis gas

In a plant having integrated CO 2 removal, for pig iron production or synthesizing gas, at least part of the offgas or synthesis gas is discharged as export gas from the plant, optionally collected in an export gas container and subsequently thermally utilized in a gas turbine. The offgas from the gas turbine is fed to a waste heat boiler for generation of steam. To reduce the addition of high-grade fuel gases, at least part of the tailgas from the CO 2 removal plant is mixed into the export gas upstream of the gas turbine as a function of the joule value of the export gas after addition of the tailgas. The proportion of tailgas is increased when the joule value of the export gas goes above a predefined maximum joule value and the proportion of tailgas is reduced when the joule value of the export gas drops below a predefined minimum joule value.

SYSTEM AND METHOD FOR REDUCING IRON OXIDE TO METALLIC IRON USING NATURAL GAS

In various exemplary embodiments, the present invention provides systems and methods that can convert clean or raw natural gas, clean or dirty coke oven gas, or the like to reducing gas/syngas suitable for direct reduction with minimal processing or cleaning. Hydrocarbons and the like are converted to Hand CO. S does not affect the conversion to reducing gas/syngas, but is removed or otherwise cleaned up by the iron bed in the direct reduction shaft furnace. Top gas may be continuously recycled or a once-through approach may be employed. 1. A method for reducing iron oxide to metallic iron , comprising:providing a top gas stream from a direct reduction shaft furnace;removing carbon dioxide from the top gas stream using a carbon dioxide removal system;heating the top gas stream in a gas heater to form a reducing gas stream and providing the reducing gas stream to the direct reduction shaft furnace to reduce the iron oxide to the metallic iron; andadding one of a natural gas stream and a coke oven gas stream to the reducing gas stream as a synthesis gas stream.2. The method of claim 1 , wherein the one of the natural gas stream and the coke oven gas stream comprises one or more of a hydrocarbon claim 1 , hydrogen claim 1 , carbon monoxide claim 1 , carbon dioxide claim 1 , and sulfur.3. The method of claim 1 , further comprising preheating the one of the natural gas stream and the coke oven gas stream in a preheater prior to adding the one of the natural gas stream and the coke oven gas stream to the reducing gas stream as the synthesis gas stream.4. The method of claim 3 , further comprising reacting the preheated one of the natural gas stream and the coke oven gas stream in a thermal reaction system to form the synthesis gas stream.5. The method of claim 4 , wherein the thermal reaction system comprises a hot oxygen burner and a nozzle that utilize oxygen and a fuel.6. The method of claim 5 , wherein the oxygen is received from an air separation plant.7. The method ...

Process for producing high-carbon biogenic reagents

This invention provides processes and systems for converting biomass into high-carbon biogenic reagents that are suitable for a variety of commercial applications. Some embodiments employ pyrolysis in the presence of an inert gas to generate hot pyrolyzed solids, condensable vapors, and non-condensable gases, followed by separation of vapors and gases, and cooling of the hot pyrolyzed solids in the presence of the inert gas. Additives may be introduced during processing or combined with the reagent, or both. The biogenic reagent may include at least 70 wt %, 80 wt %, 90 wt %, 95 wt %, or more total carbon on a dry basis. The biogenic reagent may have an energy content of at least 12,000 Btu/lb, 13,000 Btu/lb, 14,000 Btu/lb, or 14,500 Btu/lb on a dry basis. The biogenic reagent may be formed into fine powders, or structural objects. The structural objects may have a structure and/or strength that derive from the feedstock, heat rate, and additives.

BLAST FURNACE AND METHOD FOR OPERATING A BLAST FURNACE

A process for processing metal ore includes: reducing a metal ore, particularly a metallic oxide, in a blast furnace shaft; producing furnace gas containing CO, in the blast furnace shaft; discharging the furnace gas from the blast furnace shaft; directing at least a portion of the furnace gas directly or indirectly into a CO-converter; and converting the COcontained in the furnace gas into an aerosol consisting of a carrier gas and C-particles in the CO-converter in the presence of a stoichiometric surplus of C; directing at least a first portion of the aerosol from the CO-converter into the blast furnace shaft; and introducing HO into the blast furnace shaft. By virtue of the reaction C+HO→CO+2H, nascent hydrogen is produced in the blast furnace which causes rapid reduction of the metal ore. The speed of reduction of the metal ore is thus increased, and it is possible to increase either the throughput capacity of the blast furnace or to reduce the size of the blast furnace. An aerosol in the form of a fluid is easily introducible into the blast furnace shaft. 142-. (canceled)43. A method for processing metal ore comprising the following steps:{'b': '2', 'reducing a metal ore in a blast furnace shaft ();'}{'sub': '2', 'b': '2', 'producing furnace gas containing COin the blast furnace shaft ();'}{'b': '2', 'discharging the furnace gas from the blast furnace shaft ();'}{'sub': 2', '2', '2, 'b': 4', '4, 'directing the furnace gas directly or indirectly into a CO-converter () and converting the COcontained in the furnace gas into an aerosol consisting of a carrier gas and C-particles in the CO-converter () in the presence of a stoichiometric surplus of C;'}{'sub': '2', 'b': 4', '2, 'directing a first portion of the aerosol from the CO-converter () into the blast furnace shaft ();'}{'sub': '2', 'b': '4', 'wherein a second portion of the aerosol from the CO-converter () is fed to a further processing process; or'}{'sub': 2', '2, 'b': '4', 'wherein the second portion of ...

METHOD FOR OPERATING A TOP GAS RECYCLING BLAST FURNACE INSTALLATION

Method of operating a blast furnace installation comprising a top gas recycle blast furnace and hot stones, whereby a hydrocarbon containing fuel is transformed into a transformed gas stream consisting mainly of CO and Hand substantially devoid of hydrocarbon, whereby a low-heating-value gaseous fuel is generated comprising a mixture of said transformed gas with a portion of the CO-rich tail gas obtained by decarbonatation of the blast furnace gas, and whereby said low-heating-value fuel is used to heat the hot furnace gas is heated before being injected into the blast-furnace. 113-. (canceled)14. A method of operating a blast furnace installation comprising a top gas recycle blast furnace generating blast furnace gas , comprising the steps of:{'sub': 2', '2, 'decarbonating the blast furnace gas so as to obtain a CO-enriched rich tail gas stream and a decarbonated blast furnace gas stream containing not more than 3% vol CO;'}{'sub': '2', 'transforming a hydrocarbon-containing gaseous fuel not generated by the blast furnace to generate a transformed gas stream containing at least 70% vol of CO and Hin total and at most 7% vol of hydrocarbon;'}{'sup': '3', 'producing a low-heating-value gaseous fuel having a heating value of from 2.8 to 7.0 MJ/Nmand containing (i) a portion of the tail gas stream and (ii) at least a first portion of the transformed gas stream and using said low-heating-value gaseous fuel for heating hot stoves;'}heating at least 70% vol of the decarbonated blast furnace gas stream in the hot stoves to a temperature between 700° C. and 1300° C. to generate heated decarbonated blast furnace gas; andinjecting the heated decarbonated blast furnace gas into the blast furnace.15. The method of claim 14 , wherein the hydrocarbon-containing gaseous fuel contains natural gas and/or coke oven gas.16. The method of claim 14 , wherein partial combustion of the hydrocarbon-containing gaseous fuel is used to generate the transformed gas stream.17. The method of ...

Charge for Producing Iron-Ore Pellets (Variants)

The invention relates to the field of producing iron-ore pellets for blast-furnace smelting. In a first variant, a charge contains iron-ore concentrate and manganese limestone as a binding agent and flux, the ratio of charge components in wt % being as follows: 1.0-5.0 manganese limestone; and the balance iron-ore concentrate. In a second variant, the charge contains iron-ore concentrate, bauxite as a modifying agent, and manganese limestone as a binding agent and flux, the ratio of charge components in wt % being as follows: 1.0-3.5 manganese limestone; 1.2-1.5 modifying additive; and the balance iron-ore concentrate. The invention increases the strength of green and sintered pellets while preserving a high iron content, reduces the softening-melting interval of the pellets in a blast furnace, and simplifies the production of iron-ore pellets. 1. A charge for producing iron-ore pellets , the charge comprising an iron-ore concentrate , a flux and a binder , the charge comprising manganese limestone serving as the binder and the flux , wherein a ratio of components of the charge is , wt %:manganese limestone—(1.0-5.0);iron-ore concentrate—the rest.2. The charge of claim 1 , wherein a manganese content in the manganese limestone is at least 6%.3. A charge for producing iron-ore pellets claim 1 , the charge comprising an iron ore concentrate claim 1 , a flux and a binder claim 1 , the charge comprising a bauxite serving as a modifying additive claim 1 , and manganese limestone serving as the binder and the flux claim 1 , wherein a ratio of components of the charge is claim 1 , wt %:manganese limestone—(1.0-3.5);modifying additive—(1.2-1.5);iron-ore concentrate—the rest.4. The charge of claim 3 , wherein a manganese content in the manganese limestone is at least 6%. This application is a Continuation Application of International Application PCT/RU2017/000855, filed on Nov. 17, 2017, which in turn claims priority to Russian Patent Applications RU2016144588, filed Nov. 14 ...

Device And Method For Measuring Softening And Melting Performances Of Iron Ore In Blast Furnace Under Reducing Condition

The present invention discloses a device and method for measuring the softening and melting performances of iron ore in blast furnace under a reducing condition. The device includes a high temperature furnace, a gas supply system, a loading system and a weighing system, where the high temperature furnace is provided with a hearth, which is provided therein with a graphite crucible and a temperature acquisition device; the gas supply system is used to inject a reducing gas including N, H, COand CO into the hearth; the gas supply system includes a gas storage device and a gas mixing device; the loading system includes a loading rod; an upper end of the loading rod is connected with a loading device and a displacement sensor, and a lower end of the loading rod is provided with a loading head; the weighing system is used to weigh a droplet and iron ore specimen. 1. A device for measuring the softening and melting performances of iron ore in blast furnace under a reducing condition , comprising a high temperature furnace , a gas supply system , a loading system and a weighing system , whereinthe high temperature furnace is provided therein with a hearth; the hearth is provided therein with a cylindrical graphite crucible (with an open upper end) and a temperature acquisition device for acquiring temperature data of the high temperature furnace;{'sub': 2', '2', '2, 'the gas supply system is used to inject a reducing gas comprising N, H, COand CO into the hearth; the gas supply system comprises a gas storage device and a gas mixing device communicating with the gas storage device through a pipe; the gas storage device is used to store the components of the reducing gas separately and control flow rates of the components of the reducing gas according to the temperature of the high temperature furnace acquired by the temperature acquisition device; the gas mixing device is used to fully mix the components of the reducing gas and communicate with the hearth of the high ...

METHOD FOR LOADING AND DEPOSITING LOADED MATERIAL IN BLAST FURNACE, LOADED MATERIAL SURFACE DETECTION DEVICE, AND METHOD FOR OPERATING BLAST FURNACE

A detection wave from a transmitting/receiving means is guided to the interior of a blast furnace via an antenna and a reflecting plate, and when a reflected wave from the surface of a loaded material is reflected by the reflecting plate and received by the transmitting/receiving means, the reflecting plate is rotated together with the antenna, or the reflecting plate is rotated additionally, and the surface profile of the loaded material is measured by scanning the surface of the loaded material in a linear manner or a planar manner during the turning of a chute or for each prescribed turn of the chute. A deposition profile is obtained on the basis of this surface profile and is compared to a predetermined theoretical deposition profile, and the chute is controlled so as to correct the error with respect to the theoretical deposition profile and then which new loaded material is introduced. 1. A surface detection device of a loaded material in a blast furnace , which comprises a reflecting plate installed just above an opening provided in the vicinity of the top of the blast furnace and having a reflecting surface inclined toward the opening , an antenna installed to face the reflecting surface of the reflecting plate , and a waveguide configured to couple the antenna and a detection wave transmitting/receiving unit , wherein the device is configured to transmit a detection wave from the antenna to the reflecting surface of the reflecting plate , to enable the detection wave to enter the furnace through the opening , to enable the detection wave reflected from the loaded material in the furnace to return to the reflecting surface of the reflecting plate through the opening , to send the same to the antenna , to detect the detection wave by the detection wave transmitting/receiving unit and to detect a distance to a surface of the loaded material or a surface profile of the loaded material , said device comprising:a waveguide rotating unit configured to rotate the ...

DEVICE AND METHOD FOR PRODUCING ELECTRIC ENERGY FOR PRODUCING IRON FROM OXIDE IRON ORES

In an apparatus, comprising a plant for the electrothermic preparation of ethyne from coal or a hydrocarbon-containing gas providing a hydrogen-containing gas, a plant for the production of iron by reduction of oxidic iron ores, and at least one gas conduit which feeds the hydrogen-containing gas from the plant for the electrothermic preparation of ethyne as reducing agent to the plant for the production of iron by reduction of oxidic iron ores, electric energy can be utilized for the production of iron from oxidic iron ores by feeding a hydrogen-containing gas, obtained in the electrothermic preparation of ethyne from coal or a hydrocarbon-containing gas, as reducing agent to the plant for the production of iron by reduction of oxidic iron ores. 121-. (canceled)22. An apparatus for utilizing electric energy for producing iron from oxidic iron ores , comprising:a) a plant for an electrothermic preparation of ethyne from a hydrocarbon-containing gas, which plant provides a hydrogen-containing gas;b) a plant for the production of iron by reduction of oxidic iron ores; andc) at least one gas conduit which feeds the hydrogen-containing gas from the plant for the electrothermic preparation of ethyne as reducing agent to the plant for the production of iron by reduction of oxidic iron ores.23. The apparatus of claim 22 , wherein the plant for the production of iron by reduction of oxidic iron ores is a blast furnace and the gas conduit feeds the hydrogen-containing gas into a lower section of the blast furnace.24. The apparatus of claim 22 , wherein the plant for the production of iron by reduction of oxidic iron ores is a plant for direct reduction of oxidic iron ores.25. The apparatus of claim 22 , wherein the plant for the electrothermic preparation of ethyne comprises an electric arc reactor.26. The apparatus of claim 22 , comprising a gas conduit which allows feeding all or part of the reaction mixture obtained in the electrothermic preparation of ethyne as reducing ...

METHOD FOR OPERATING BLAST FURNACE

To provide a method for operating a blast furnace with which the combustion efficiency of a solid fuel, such as pulverized coal, is improved, thereby making it possible to improve productivity and reduce COemissions. Pulverized coal and oxygen are blown from an upstream lance configured by a double tube, and LNG is blown from a downstream lance on the downstream side in a hot air blast direction, so that oxygen to be used for combustion of the LNG is supplied from the upstream lance , and the pulverized coal whose temperature has been increased by the combustion of the LNG is combusted along with the supplied oxygen or oxygen in an air blast. When a direction perpendicular to the hot air blast direction is designated as 0°, and a downstream direction and an upstream direction therefrom in the hot air blast direction are designated as positive and negative, respectively, a blowing direction of the LNG from the downstream lance with respect to the blast direction ranges from −30° to +45°, and a blowing position of the LNG from the downstream lance with reference to a position at which the upstream lance is inserted into a blast pipe ranges from 160° to 200° in terms of a blast pipe circumferential direction angle. 1. A method for operating a blast furnace , in which hot air is blown into a blast furnace from a blast pipe through a tuyere , the method comprising:using a double tube as an upstream lance for blowing a solid fuel into the blast pipe;blowing one of the solid fuel and combustion-supporting gas from one of an inner tube of the upstream lance and a gap between the inner tube and an outer tube, and blowing the other of the solid fuel and the combustion-supporting gas from the other of the inner tube and the gap between the inner tube and the outer tube;disposing a downstream lance on a downstream side in a blast direction of the hot air from a blowing end part of the upstream lance; andblowing flammable gas from the downstream lance.2. The method for operating ...

METHOD FOR SUPPLYING HYDROGEN-CONTAINING REDUCING GAS TO SHAFT PART OF BLAST FURNACE

The present invention provides a novel method for supplying a reducing gas to the shaft part of a blast furnace with which a large amount of reducing gas containing hydrogen at a high concentration can be supplied to a deeper position in the blast furnace (location of the blast furnace closer to the center axis in the radial direction) and with which it is possible to reduce the total generated amount of COof the COamount that is reduced by conducting hydrogen smelting in the blast furnace and the COamount that is generated during production of the reducing gas supplied to the blast furnace. The method for supplying a reducing gas to the shaft part of a blast furnace according to the present invention is characterized by reforming coke oven gas by increasing the temperature thereof to 1200 to 1800° C. in a reactor in which an oxygen-containing gas is supplied to preheated coke oven gas to generate reformed gas in which hydrogen gas is enriched; mixing the reformed gas with CO-containing gas in the reactor so that the hydrogen concentration of the reducing gas is adjusted to 15-35 vol % (wet); and supplying the resultant reducing gas to the shaft part of the blast furnace under a condition of a ratio of a flow rate of reducing gas blown into shaft part/flow rate of reducing gas blown into tuyere >0.42. 1. A method for supplying a hydrogen-containing reducing gas to a shaft part of a blast furnace , the method comprising manufacturing a reducing gas by raising a temperature inside a reactor in which an oxygen-containing gas is supplied to a preheated coke oven gas to 1200 to 1800° C. to reform the coke oven gas and thereby produce reformed gas enriched in hydrogen gas , then mixing the CO-containing gas with that reformed gas in the reactor to adjust the concentration of hydrogen to 15 to 35 vol % (wet) and supplying the reducing gas to the shaft part of the blast furnace under a condition of a ratio of a flow rate of blowing the reducing gas to the shaft part/a flow ...

BLAST FURNACE OPERATION METHOD AND LANCE

A method is provided for operating a blast furnace by blowing a solid reducing material, a flammable gaseous reducing material and a combustible gas into a blast furnace from tuyeres through a lance into a blast furnace, wherein a parallel type lance prepared by bundling three independent blowing tubes in parallel and integrally housing them into an outer tube is used, and either one or both of the gaseous reducing material and the combustible gas and the solid reducing material are simultaneously blown through the respective blowing tubes, while the blowing tube for the solid reducing material and the blowing tube for the gaseous reducing material are positioned above the blowing tube for the combustible gas in the blowing through the parallel type lance as well as a lance structure thereof. 1. A method of operating a blast furnace by blowing a solid reducing material , a gaseous reducing material and a combustible gas into a blast furnace from tuyeres through a lance into a blast furnace , wherein a parallel type lance prepared by bundling three independent blowing tubes in parallel and integrally housing them into an outer tube for the lance is used , and either one or both of the gaseous reducing material and the combustible gas and the solid reducing material are simultaneously blown through the respective blowing tubes , while the blowing tube for the solid reducing material and the blowing tube for the gaseous reducing material are positioned above the blowing tube for the combustible gas in the blowing through the parallel type lance.2. The method of operating a blast furnace according to claim 1 , wherein the blowing tube for solid reducing material claim 1 , the blowing tube for gaseous reducing material and the blowing tube for combustible gas in the parallel type lance are arranged so that an angle of a face passing an outer contact point between a center of the blowing tube for solid reducing material and the outer tube for lance to a radially vertical ...

Process for producing high-carbon biogenic reagents

This invention provides processes and systems for converting biomass into high carbon biogenic reagents that are suitable for a variety of commercial applications. Some embodiments employ pyrolysis in the presence of an inert gas to generate hot pyrolyzed solids, condensable vapors, and non-condensable gases, followed by separation of vapors and gases, and cooling of the hot pyrolyzed solids in the presence of the inert gas. Additives may be introduced during processing or combined with the reagent, or both. The biogenic reagent may include at least 70 wt %, 80 wt %, 90 wt %, 95 wt %, or more total carbon on a dry basis. The biogenic reagent may have an energy content of at least 12,000 Btu/lb, 13,000 Btu/lb, 14,000 Btu/lb, or 14,500 Btu/lb on a dry basis. The biogenic reagent may be formed into fine powders, or structural objects. The structural objects may have a structure and/or strength that derive from the feedstock, heat rate, and additives.

METHOD FOR OPERATING BLAST FURNACE

To provide a method for operating a blast furnace with which the combustion efficiency of a solid fuel, such as pulverized coal, is improved, thereby making it possible to improve productivity and reduce COemissions. Pulverized coal and LNG are blown from an upstream lance configured by a double tube, and oxygen is blown from a downstream lance on the downstream side in a hot air blast direction, so that oxygen used for preceding combustion of the LNG is supplied from the downstream lance, and the pulverized coal whose temperature has been increased by the combustion of the LNG is combusted along with the supplied oxygen. When a direction perpendicular to the hot air blast direction is designated as 0° , and a downstream direction and an upstream direction therefrom in the hot air blast direction are designated as positive and negative, respectively, a blowing direction of the oxygen from the downstream lance with respect to the blast direction ranges from −30° to +45° , and a blowing position of the oxygen from the downstream lance with reference to a position at which the upstream lance is inserted into a blast pipe ranges from 160° to 200° in terms of a blast pipe circumferential direction angle. 1. A method for operating a blast furnace , in which hot air is blown into a blast furnace from a blast pipe through a tuyere ,the method comprising:using a double tube as an upstream lance for blowing a solid fuel into the blast pipe;blowing one of the solid fuel and flammable gas from one of an inner tube of the upstream lance and a gap between the inner tube and an outer tube, and blowing the other of the solid fuel and the flammable gas from the other of the inner tube and the gap between the inner tube and the outer tube;disposing a downstream lance on a downstream side in a blast direction of the hot air from a blowing end part of the upstream lance; andblowing combustion-supporting gas from the downstream lance.2. The method for operating a blast furnace according ...

Blast furnace operation method

A method is provided for operating a blast furnace by blowing at least a solid reducing material and a combustible gas into the furnace through tuyeres with a lance inserted into a blowpipe, wherein a tube-bundle type lance obtained by bundling a plurality of blowing tubes is used and when only a solid reducing material or two kinds of a solid reducing material and a combustible gas or three kinds of a solid reducing material, a combustible gas and a gaseous reducing material is simultaneously blown into an inside of the blast furnace through a tube for blowing the solid reducing material, a tube for blowing the combustible gas and a tube for blowing the gaseous reducing material in the tube-bundle type lance, two or more tube-bundle type lances are inserted into the blowpipe to approximate their front ends to each other and blowing is performed so that the respective blowout streams interfere with each other in the blowpipe.

Method for Recycling-Processing of Dust Generated in Converter Furnace, and Method for Manufacturing Steel

A method for recycling processing of dust generated in a converter furnace, includes: crushing and drying a cake formed by adding a binder to a slurry containing iron powder-containing dust that is generated at the time of converter blowing and wet-collected to produce a mixed slurry and subjecting the produced mixed slurry to a dehydration treatment in a filter press; accumulating the cake in an accumulation tank; and charging the cake into a converter furnace 10, the crushed product in the accumulation tank 25 is kept at a temperature of less than 90° C. by forcibly passing air into the accumulation tank 25 and charged into a converter furnace according to the converter operation.

METHOD FOR OPERATING A BLAST FURNACE

A method of operating a blast furnace comprising two or more lances that inject reducing agents from a tuyere including injecting a solid reducing agent and a flammable reducing agent from different lances; and arranging a position of an end of the lance that injects the flammable reducing agent closer to a near side in a injecting direction by more than 0 to 50 mm than a position of an end of the lance that injects the solid reducing agent. 19.-. (canceled)10. A method of operating a blast furnace comprising:providing two or more lances that inject reducing agents from a tuyere;injecting a solid reducing agent and a flammable reducing agent from different lances; andarranging a position of an end of the lance that injects the flammable reducing agent closer to a near side in a injecting direction by more than 0 to 50 mm than a position of an end of the lance that injects the solid reducing agent.11. The method according to claim 10 , wherein a position of the end of the lance that injects the flammable reducing agent is arranged closer to a near side in an injecting direction by 10 to 30 mm than a position of the end of the lance that injects the solid reducing agent.12. The method according to claim 10 , wherein an outlet flow velocity at the lance that injects the solid reducing agent and an outlet flow velocity at the lance that injects the flammable reducing agent are 20 to 120 m/sec.13. The method according to claim 10 , wherein the lance that injects the solid reducing agent is a double wall lance claim 10 , the solid reducing agent is injected from an inner tube of the double wall lance claim 10 , a combustion-supporting gas is injected from an outer tube of the double wall lance claim 10 , and the flammable reducing agent is injected from a single wall lance.14. The method according to claim 13 , wherein an outlet flow velocity at the outer tube that injects the combustion-supporting gas of the double wall lance and an outlet flow velocity at the single ...

METHOD FOR PRODUCING METAL FROM METAL OXIDE BY CARBOTHERMIC REDUCTION AND HOLED CAKE USED THEREFOR

A high-efficiency method for producing metal from metal oxide by carbothermic reduction includes step in which a holed cake is provided, which has a composition comprising a metal oxide, a carbonaceous reducing agent, and a binder, and the holed cake has a plurality of holes. The method continues with step in which the holed cake is placed in a high-temperature furnace for carbothermic reduction, to reduce the metal oxide in the holed cake into a metal. 1. A method for producing metal from metal oxide by carbothermic reduction , comprising:providing a holed cake having a composition comprising a metal oxide, a carbonaceous reducing agent, and a binder, and the holed cake having a plurality of holes; andplacing the holed cake in a high-temperature furnace for carbothermic reduction, to reduce the metal oxide in the holed cake into a metal.2. The method of claim 1 , wherein the holed cake is prepared by the following steps: the metal oxide claim 1 , the carbonaceous reducing agent and the binder are uniformly mixed to form a mixture; and then the mixture is disposed in a mold to form the holed cake.3. The method of claim 1 , wherein the content of the metal oxide is 70 to 90 wt % inclusive.4. The method of claim 1 , wherein the content of the carbonaceous reducing agent is 10 to 30 wt % inclusive.5. The method of claim 1 , wherein the binder is added in an amount of 0.1 to 6% based on the total weight of the metal oxide and the carbonaceous reducing agent.6. The method of claim 1 , wherein the metal oxide is iron oxide claim 1 , nickel oxide claim 1 , copper oxide claim 1 , lead oxide claim 1 , manganese oxide claim 1 , tin oxide claim 1 , potassium oxide claim 1 , sodium oxide claim 1 , zinc oxide claim 1 , or a combination of at least two of the foregoing.7. The method of claim 1 , wherein the carbonaceous reducing agent is carbon black claim 1 , activated carbon claim 1 , coal claim 1 , coke claim 1 , graphite claim 1 , charcoal claim 1 , or a combination of at ...

METHOD FOR PREPARING COAL TO BE INJECTED INTO BLAST FURNACE, COAL TO BE INJECTED INTO BLAST FURNACE, AND USAGE OF SAME

A method for preparing coal which is to be injected into a blast furnace includes: a step (S) for analyzing the ash of coal in a raw-coal stage and determining the contents (wt %) of At Si, Ca and Mg in the ash; a step (S) for deriving the ash melting point of the coal on the basis of the obtained data: a step (S) for selecting a metal species to be supported on the coal and deriving the amount thereof to be supported on the basis of the obtained data so as to adjust the melting point of the ash of the coal to 1200 to 1400° C.; a step (S) for making the metal supported on the coal in the derived amount by an ion-exchange method; and a step (S) for carbonizing the coal obtained in the step (). 1. A method for preparing blast furnace injection coal to be injected through a tuyere into an interior of a blast furnace main body of a blast furnace installation , the method comprising:a first step of analyzing ash of run-of-mine coal and weight percentages of Al, Si, Ca, and Mg in the ash;a second step of deriving an ash melting point of the coal based on data obtained by the analysis;a third step of selecting a metal species to be supported on the coal and deriving the amount of the metal species to be supported based on data obtained in the first step and the second step to adjust the ash melting point of the coal to 1200 to 1400° C.;a fourth step of supporting the metal in the amount to be supported onto the coal by an ion exchange method; anda fifth step of pyrolyzing the coal obtained in the fourth step.2. The method for preparing blast furnace injection coal according to claim 1 , whereinthe metal is at least one of calcium and magnesium.3. The method for preparing blast furnace injection coal according to claim 1 , whereinthe coal is thermally treated at 350 to 550° C. in the fifth step to adjust a residual volatile content to 15 to 35%.4. The method for preparing blast furnace injection coal according to claim 1 , wherein{'sub': '2', 'the amount of the metal to be ...

BLAST FURNACE WITH TOP-GAS RECYCLE

A blast furnace where coke is combusted with oxygen, instead of air, and where a top gas comprising CO, CO, H, and without excess nitrogen is withdrawn from the upper part of the blast furnace, cleaned of dust, the H/CO volume ratio adjusted to between 1.5 to 4.0 in a water shift reactor, water and COare removed (increasing its reduction potential), heated to a temperature above 850° C. and fed back to the blast furnace above where iron starts melting (thereby increasing the amount of metallic iron reaching the dead-man zone and decreasing the amount of coke used for reduction). Also carbon deposit problems caused by heating the CO-containing recycled gas are minimized by on-line cleaning of the heater tubes with steam without significantly affecting the reduction potential of the recycled reducing gas. 1. Method of producing molten iron in a blast furnace to which iron ore , metallurgical coke and fluxes are charged at its upper part and molten iron and slag are tapped from its lower part , said blast furnace having a plurality of tuyeres in its lower part for introducing an oxygen-containing gas for generating heat and reducing gases by combustion of the coke within said furnace characterized by:feeding oxygen instead of air through the tuyeres of said blast furnace;{'sub': 2', '2, 'withdrawing a top gas stream comprising CO, COand H;'}cleaning the top gas stream of dust and{'sub': '2', 'adjusting the volume ratio of H/CO to the range between 1.5 to 4 by reaction with water;'}cooling said top gas stream for removing water therefrom;{'sub': 2', '2, 'removing COfrom a portion of said cooled top gas stream forming a CO-lean reducing gas stream,'}heating said reducing gas stream to a temperature above 850° C., andfeeding said hot gas stream to said blast furnace contributing to the reduction of said iron ore to metallic iron.2. Method of producing molten iron according to claim 1 , further characterized by reacting said cleaned top gas in a catalytic reactor with ...

Method for operating a blast furnace

A method of operating a blast furnace includes two or more lances that inject reducing agents from a tuyere; injecting a solid reducing agent and a flammable reducing agent from different lances; and disposing the lances so that an axial line that extends from an end of the lance that injects the solid reducing agent and is the axial line of the lance that injects the solid reducing agent and an axial line that extends from an end of the lance that injects the flammable reducing agent and is the axial line of the lance that injects the flammable reducing agent cross each other, and so that a main flow of the solid reducing agent injected and a main flow of the flammable reducing agent injected overlap.

Method for Producing an Agglomerate Made of Fine Material Containing Metal Oxide for Use as a Blast Furnace Feed Material

The invention relates to a method for producing an agglomerate, which is used as a blast furnace feed material, by mixing a fine material containing metal and/or metal oxide, a mineral binder, which comprises a mineral raw material and a lime-based material, and optionally other additives to form a mass and solidifying the mass to form an agglomerate, wherein a raw material comprising a silicon oxide fraction of at least 40 wt %, a fine grain fraction of less than 4 μm of at least 20 wt %, and a grain size fraction of less than 1 μm of at least 10 wt % is used as the mineral raw material. The invention further relates to a blast furnace feed material that can be produced by means of the method according to the invention, and to a pre-mixture for producing the blast furnace feed material. 128-. (canceled)29. Agglomerate , produced by a sintering process for use as a blast furnace feedstock , comprisingmetal- and/or metal oxide containing fines, that comprise a proportion of intermediate grain sizes between about 0.2 mm to 0.7 mm of more than 30% wt., and contains a clay mineral, and', 'comprises a silicon oxide proportion of at least 40 wt.% and', 'a finest grain proportion of less than 4 μm of at least 20 wt.%, and', 'a grain size proportion of less than 1 μm of at least 10 wt.%., 'a mineral binder comprising a mineral raw material and a lime-based material, wherein the mineral raw material'}30. Agglomerate according to claim 29 , wherein the mineral raw material comprises short clay that consists of at least 60 wt.% of fine quartz and 20 to 40 wt.% kaolinite and optionally secondary micas.31. Agglomerate according to claim 30 , wherein the mineral raw material comprises 70 to 90 wt.% silicon oxide claim 30 , 5 to 20 wt.% aluminium oxide claim 30 , 0.2 to 1.5 wt.% FeOand 0.1 to 1 wt.% potassium oxide.32. Agglomerate according to claim 29 , wherein the metal- and/or metal oxide containing fines and the mineral binder are present in the agglomerate in a proportion of ...

BLAST FURNACE AND METHOD FOR OPERATING A BLAST FURNACE

The present invention is directed to a blast furnace and a method for operating a blast furnace which are able to reduce the COproduction and reduce the amount of applied additives and heating material when compared to presently known metallurgical plants. This problem is solved by a process for metal production of metal ores comprising the following steps: reducing a metal ore, particularly a metal oxide; producing furnace gas containing COin a blast furnace shaft; discharging said furnace gas from the blast furnace shaft; directing at least a portion of the furnace gas directly or indirectly into a COconverter and reducing the COcontained in the furnace gas into CO in the COconverter, directing at least a portion of the CO from the COconverter into the blast furnace shaft. Besides solving the above mentioned problem, the method also produces CO as a gaseous reduction agent which may be easily introduced into the blast furnace shaft. 1. A method for processing metal ore comprising the following steps:reducing a metal ore;{'sub': '2', 'b': '2', 'producing furnace gas containing COin a blast furnace shaft ();'}{'b': '2', 'discharging said furnace gas from the blast furnace shaft ();'}{'sub': 2', '2', '2, 'b': 4', '4, 'directing at least a portion of the furnace gas directly or indirectly into a COconverter () and reducing the COcontained in the furnace gas to CO in the COconverter ();'}{'sub': '2', 'b': 4', '2, 'directing a first portion of the CO from the COconverter () into the blast furnace shaft ();'}{'sub': '2', 'b': '4', 'claim-text': an oxidation process in a fuel cell;', 'a combustion process in a gas engine', 'a combustion process in a gas turbine;', [{'br': None, 'sub': 2', '2', '5', '2, '6CO+3HO→CHOH+4CO;\u2003\u2003a)'}, {'br': None, 'sub': 2', '2', '2', '5', '2, '6H+2CO→CHOH+3HO;\u2003\u2003b)'}, {'br': None, 'sub': 2', '2', '5', '2, '2CO+4H→CHOH+HO; and\u2003\u2003c)'}], 'a biological conversion process in a bio converter carried out using microbes or ...

Preheating oxygen for injection into blast furnaces

A side stream of hot blast air is used to preheat oxygen at a heat exchanger. The resultant hot oxygen is injected into a tuyere of a blast furnace with pulverized or granular coal. The cooled side stream may be recombined with the hot blast air for injection into the tuyere, fed to the stove as part of the cold blast air, or fed to stove for combustion with blast furnace gas.

BIO-REDUCTION OF METAL ORES INTEGRATED WITH BIOMASS PYROLYSIS

Some variations provide a composition for reducing a metal ore, the composition comprising a carbon-metal ore particulate, wherein the carbon-metal ore particulate comprises at least about 0.1 wt % to at most about 50 wt % fixed carbon on a moisture-free and ash-free basis, and wherein the carbon is at least 50% renewable carbon as determined from a measurement of the C/C isotopic ratio. Some variations provide a process for reducing a metal ore, comprising: providing a biomass feedstock; pyrolyzing the feedstock to generate a biogenic reagent comprising carbon and a pyrolysis off-gas comprising hydrogen or carbon monoxide; obtaining a metal ore comprising a metal oxide; combining the carbon with the metal ore, to generate a carbon-metal ore particulate; optionally pelletizing the carbon-metal ore particulate; and utilizing the pyrolysis off-gas to chemically reduce the metal oxide to elemental metal, such as iron. The disclosed technologies are environmentally superior to conventional processes based on coal. 1. A composition for reducing a metal ore , the composition comprising a carbon-metal ore particulate , wherein the carbon-metal ore particulate comprises at least about 0.1 wt % to at most about 50 wt % fixed carbon on a moisture-free and ash-free basis; and wherein the fixed carbon is at least about 50% renewable carbon as determined from a measurement of the C/C isotopic ratio of the carbon.2. The composition of claim 1 , wherein the measurement of the C/C isotopic ratio of the fixed carbon utilizes ASTM D6866.3. The composition of claim 1 , wherein the metal ore is selected from iron ore claim 1 , copper ore claim 1 , nickel ore claim 1 , magnesium ore claim 1 , manganese ore claim 1 , aluminum ore claim 1 , tin ore claim 1 , zinc ore claim 1 , cobalt ore claim 1 , chromium ore claim 1 , tungsten ore claim 1 , molybdenum ore claim 1 , or a combination thereof.4. The composition of claim 1 , wherein the metal ore is iron ore.5. The composition of claim 1 , ...

METHOD AND EQUIPMENT FOR RECYCLING USED CELLS AND RECHARGEABLE BATTERIES

A method for recycling used cells such as saline cells, alkaline cells, button cells and used rechargeable batteries, includes the step of introducing the cells and/or rechargeable batteries as feedstock into a metal melting furnace, at the charging door thereof. The cells and/or rechargeable batteries are subjected to a compression operation in order to remove the electrolytes contained in the cells and/or rechargeable batteries, prior to introducing the cells and/or rechargeable batteries into the metal melting furnace. 1. A method for recycling used cells such as saline cells , alkaline cells , button cells and used rechargeable batteries , the method includes the steps of introducing the cells and/or rechargeable batteries as feedstock into a metal melting furnace , at the charging door thereof , wherein the cells and/or rechargeable batteries are subjected to a compression operation to remove the electrolytes contained in the cells and/or rechargeable batteries , prior to introducing the cells and/or rechargeable batteries into the metal melting furnace.2. The method according to claim 1 , wherein the cells and/or rechargeable batteries are mixed with shavings of cast iron or steel to obtain a homogenous mixture claim 1 , the mixture undergoes the compression operation to form briquettes whereof the electrolyte has been removed claim 1 , and the briquettes are introduced into the metal melting furnace.3. The method according to claim 2 , further including the step of adding additional elements to the mixture of cells and/or rechargeable batteries and chips of cast iron and/or steel claim 2 , wherein additional elements such as a powder of Black Mass of cells or rechargeable batteries claim 2 , carbon and alloy elements in order to obtain a cast iron or steel with a desired composition claim 2 , before the briquetting operation.4. The method according to claim 2 , wherein the percentage of cells and/or rechargeable batteries and added elements does not exceed ...

Operating method of an iron making installation and associated operating installation

A method of operating an iron making installation is provided, in which waste material is dried using a drying gas, the drying gas including an exhaust gas from a sinter plant, and the dried material is roasted a roasting gas, so as to produce coal and a roasting exhaust gas. An associated installation is also provided. 120-. (canceled)21. A method of operating of an iron making installation , the method comprising the steps of:drying waste material using a drying gas, the drying gas comprising an exhaust gas from a sinter plant, androasting the dried waste material using a roasting gas, so as to produce coal and a roasting exhaust gas.22. The operating method according to claim 21 , wherein the drying gas comprises at least 50% of an exhaust gas from a sinter plant.23. The operating method according to claim 21 , further comprising recycling at least a part of the roasting exhaust gas to the sinter plant.24. The operating method according to claim 21 , wherein the drying gas has a temperature of at least 70° C.25. The operating method according to wherein the sinter plant exhaust gas is mixed with other components to form the drying gas claim 22 , and has a temperature between 100 and 150° C. when mixed with the other components to form the drying gas.26. The operating method according to claim 21 , wherein the roasting is performed at a temperature between 200 and 320° C.27. The operating method according to claim 21 , wherein at least a part of the roasting exhaust gas is used as part of the drying gas.28. The operating method according to claim 21 , wherein the roasting exhausts gas is used in the roasting step as part of the roasting gas.29. The operating method according to claim 21 , wherein after the roasting step the coal is used as raw material into an iron making process.30. The operating method according to claim 29 , wherein after the roasting step the coal is subjected to a milling step and milled coal is injected into a blast furnace through a tuyere. ...

Method for charging raw materials into blast furnace

A method for charging raw materials into a blast furnace is as follows. The blast furnace includes a bell-less charging device that includes a plurality of main hoppers and an auxiliary hopper. The auxiliary hopper has a smaller capacity than the main hoppers. The method includes discharging ore charged in at least one of the plurality of main hoppers, and then sequentially charging the ore from a furnace center side toward a furnace wall side by using a rotating chute. After charging of the ore is started, only the ore is charged from the rotating chute at least until charging of 45 mass % of the ore is completed based on a total amount of the ore to be charged per batch; then, discharging of low-reactivity ore charged in the auxiliary hopper is started; and then, the low-reactivity ore is charged together with the ore from the rotating chute.

METHOD FOR OPERATING A BLAST FURNACE

A method for operating a blast furnace, including collecting a blast furnace gas from the blast furnace, the blast furnace gas being a COcontaining gas, combining the blast furnace gas with a fuel gas to obtain a gas mixture, the fuel gas being a hydrocarbon containing gas, subjecting the gas mixture to a reforming process, thereby producing a synthesis gas containing CO and H; and feeding at least a portion of the synthesis gas and an oxygen-rich gas into the blast furnace, where the blast furnace gas is combined with the fuel gas while containing substantially the same amount of COas when exiting the blast furnace and wherein the blast furnace gas is combined with the fuel gas in an over-stoichiometric ratio, so that the synthesis gas contains a surplus portion of the blast furnace gas. 2. A method according to claim 1 , wherein the blast furnace gas is combined with the fuel gas in an over-stoichiometric ratio before the reforming process.3. A method according to claim 1 , wherein the blast furnace gas is combined with the fuel gas in a stoichiometric ratio before the reforming process claim 1 , while additional blast furnace gas is combined with the synthesis gas after the reforming process.4. A method according to claim 1 , wherein the oxygen-rich gas contains at least 60% of O.5. A method according to claim 1 , wherein the oxygen-rich gas has a temperature below 100° C.6. A method according to claim 1 , wherein the synthesis gas is fed into the blast furnace at a tuyere level and/or lower shaft level having a temperature of at least 800° C.7. A method according to claim 1 , wherein the over-stoichiometric ratio is adjusted to control a top gas temperature of the blast furnace.8. A method according to claim 1 , wherein the over-stoichiometric ratio is adjusted to control a flame temperature of the blast furnace.9. A method according to claim 1 , wherein in addition to the synthesis gas and the oxygen-rich gas claim 1 , an auxiliary fuel is fed into the blast ...

Method for operating a metallurgical furnace

A method for operating a metallurgical furnace and a simplified way of providing synthesis gas for a metallurgical furnace, includes the following steps performing a combustion process outside the metallurgical furnace by combusting a carbon-containing material with an oxygen-rich gas to produce an offgas, which offgas is a CO 2 containing gas; and combining the offgas, while having an elevated combustion-induced temperature due to the combustion process, with a hydrocarbon-containing fuel gas to obtain a first gas mixture having a temperature above a reforming temperature necessary for a reforming process, preferably a dry reforming process; the first gas mixture undergoing the reforming process, thereby producing a synthesis gas containing CO and H 2 , the reforming process being performed non-catalytically; and feeding the synthesis gas into the metallurgical furnace.

AUTOMATED CONTROL OF CIRCUMFERENTIAL VARIABILITY OF BLAST FURNACE

Controlling circumferential variability in a blast furnace may include generating a predictive model that sets up a relationship between a standard deviation of a selected state variable, state variables and one or more control variables in blast furnace operation for predicting the standard deviation. A number of circumferential sections of the blast furnace is defined, and the predictive model associated with the selected state variable for each of the circumferential sections is trained based on process data of the blast furnace. A plurality trained predictive models is generated associated with different circumferential sections and different selected state variables. One or more future control variable set points that minimize a sum of the plurality of predictive models, is determined. One or more future control variable set points is transmitted to a control system to control the blast furnace operation. 19.-. (canceled)10. A computer readable storage medium storing a program of instructions executable by a machine to perform a method of controlling circumferential variability in a blast furnace , the method comprising:generating a predictive model that sets up a relationship between a standard deviation of a selected state variable, state variables and one or more control variables in blast furnace operation for predicting the standard deviation;defining a number of circumferential sections of the blast furnace;receiving process data associated with the blast furnace operation;training the predictive model associated with the selected state variable for each of the circumferential sections based on the process data, wherein a plurality trained predictive models is generated associated with different circumferential sections and different selected state variables, the different selected state variables comprising temperature and pressure;determining one or more future control variable set points that minimize a sum of the plurality of predictive models that ...

AUTOMATED CONTROL OF CIRCUMFERENTIAL VARIABILITY OF BLAST FURNACE

Controlling circumferential variability in a blast furnace may include generating a predictive model that sets up a relationship between a standard deviation of a selected state variable, state variables and one or more control variables in blast furnace operation for predicting the standard deviation. A number of circumferential sections of the blast furnace is defined, and the predictive model associated with the selected state variable for each of the circumferential sections is trained based on process data of the blast furnace. A plurality trained predictive models is generated associated with different circumferential sections and different selected state variables. One or more future control variable set points that minimize a sum of the plurality of predictive models, is determined. One or more future control variable set points is transmitted to a control system to control the blast furnace operation. 1. A method of controlling circumferential variability in a blast furnace , the method performed by at least one hardware processor , the method comprising:generating a predictive model that sets up a relationship between a standard deviation of a selected state variable, state variables and one or more control variables in blast furnace operation for predicting the standard deviation;defining a number of circumferential sections of the blast furnace;receiving process data associated with the blast furnace operation;training the predictive model associated with the selected state variable for each of the circumferential sections based on the process data, wherein a plurality trained predictive models is generated associated with different circumferential sections and different selected state variables, the different selected state variables comprising temperature and pressure;determining one or more future control variable set points that minimize a sum of the plurality of predictive models that are trained; andtransmitting the one or more future control ...

Fine Particle Coal, and Systems, Apparatuses, and Methods for Collecting and Using the Same

Methods, apparatuses, and systems to collect fine particle coal are provided herein. For example, these methods, apparatuses, and systems may be incorporated into a coal processing plant to collect a portion of the fine particle coal that is normally lost in the system. A fine particle coal also is provided. The fine particle coal may have a particle size of 1000 μm or smaller and a water content of from about 5% to about 20%, by weight. 1. A method of collecting fine particle coal comprising:dewatering a clean coal effluent slurry having a solids content of 30% or less, by weight, to produce a fine particle coal having a particle size of 1000 μm or smaller and a water content of from about 5% to about 20%, by weight.2. The method of claim 1 , wherein dewatering the clean coal effluent slurry comprises centrifuging the slurry in a solid bowl centrifuge claim 1 , the centrifuge comprising a rotating bowl claim 1 , an internal scroll claim 1 , and a weir plate.3. The method of claim 2 , further comprising:adjusting, based on properties of the clean coal effluent slurry, properties of the fine particle coal, or both, at least one parameter selected from the group consisting of centrifugal torque, differential rotational speed between the rotating bowl and the internal scroll, and dam height of the weir plate.4. The method of claim 1 , wherein the clean coal effluent slurry has a solids content of from about 3% to about 25% claim 1 , by weight.5. The method of claim 1 , wherein the fine particle coal contains at least 95% claim 1 , by weight claim 1 , of the solids contained in the clean coal effluent slurry.6. An apparatus for collecting fine particle coal from a clean coal effluent slurry claim 1 , the apparatus comprising:a solid bowl centrifuge that retains a particle size of 1000 μm or smaller.7. The apparatus of claim 6 , wherein the solid bowl centrifuge retains a particle size of 100 mesh or smaller.8. The apparatus of claim 6 , wherein:the solid bowl centrifuge ...

Methods and apparatus for enhancing the energy content of carbonaceous materials from pyrolysis

Processes and systems for converting biomass into high-carbon biogenic reagents that are suitable for a variety of commercial applications. Pyrolysis in the presence of an inert gas is employed to generate hot pyrolyzed solids, condensable vapors, and non-condensable gases, followed by separation of vapors and gases, and cooling of the hot pyrolyzed solids in the presence of the inert gas. Additives may be introduced during processing or combined with the reagent, or both. The biogenic reagent may include at least 70 wt %, 80 wt %, 90 wt %, 95 wt %, or more total carbon on a dry basis. The biogenic reagent may have an energy content of at least 12,000 Btu/lb, 13,000 Btu/lb, 14,000 Btu/lb, or 14,500 Btu/lb on a dry basis. The biogenic reagent may be formed into fine powders, or structural objects. The structural objects may have a structure and/or strength that derive from the feedstock, heat rate, and additives.

PLANT COMPLEX FOR PIG IRON PRODUCTION AND A METHOD FOR OPERATING THE PLANT COMPLEX

A plant complex for pig iron production may include a furnace and a furnace gas conduit system for a furnace gas quantity stream that comprises nitrogen, carbon monoxide, and carbon dioxide. The plant complex may also include a hydrogen source, an Hgas conduit system for a hydrogen-containing gas quantity stream emitted from the hydrogen source, a mixing apparatus for establishing a mixed gas formed from the furnace gas stream and the hydrogen-containing gas quantity stream. The mixing apparatus may be connected to the furnace gas conduit system and to the Hgas conduit system. The mixed gas established may have a stoichiometric mixing quotient formed from a dividend with a difference value between molar amounts of hydrogen as minuend and carbon dioxide as subtrahend and of a divisor with a sum value of molar amounts of carbon monoxide and carbon dioxide. The plant complex may also include a mixed gas conduit system and a chemical plant connected to the mixed gas conduit system. 117.-. (canceled)18. A plant complex for pig iron production , the plant comprising:a furnace for pig iron production;a furnace gas conduit system for a furnace gas quantity stream obtained in the pig iron production, wherein the furnace gas quantity stream comprises carbon monoxide and carbon dioxide;a hydrogen source;{'sub': '2', 'an Hgas conduit system for a hydrogen-containing gas quantity stream emitted from the hydrogen source;'}{'sub': '2', 'a mixing apparatus for establishing a mixed gas formed from the furnace gas quantity stream and the hydrogen-containing gas quantity stream, wherein the mixing apparatus is connected to the furnace gas conduit system and to the Hgas conduit system, wherein the mixed gas comprises a stoichiometric mixing quotient formed from a dividend with a difference value between molar amounts of hydrogen as minuend and carbon dioxide as subtrahend and of a divisor with a sum value of molar amounts of carbon monoxide and carbon dioxide;'}a mixed gas conduit ...

SYSTEM AND METHOD FOR REDUCING ORE USING HYDROGEN AS A REDUCING AGENT

A system for reducing ore includes a hydrogen supply unit configured to supply hydrogen, a furnace configured to reduce the ore using the supplied hydrogen, and a hydrogen recovery unit configured to recover hydrogen from an exhaust gas that is exhausted from the furnace. 1. A system for reducing ore , comprising:a hydrogen supply unit configured to supply hydrogen;a furnace configured to reduce the ore using the supplied hydrogen; anda hydrogen recovery unit configured to recover hydrogen from an exhaust gas that is exhausted from the furnace.2. The system of claim 1 , wherein the hydrogen supply unit comprises a proton exchange membrane (PEM) electrolyzer claim 1 , and the hydrogen recovery unit comprises a PEM hydrogen pump.3. The system of claim 2 , further comprising:a mixed gas transport line fluidly connected to an outlet of the PEM electrolyzer and to an inlet the furnace, and configured to transport the supplied hydrogen and the recovered hydrogen to the furnace;an exhaust line fluidly connected to an outlet of the furnace and to an inlet of the PEM hydrogen pump, and configured to transport the exhaust gas from the furnace to the PEM hydrogen pump; anda recovered hydrogen line fluidly connected to an outlet of the PEM hydrogen pump and to the mixed gas transport line, and configured to transport the recovered hydrogen from the PEM hydrogen pump to the mixed gas transport line.4. The system of claim 3 , further comprising a separating unit configured to separate oxygen from water in a water/oxygen output stream of the PEM electrolyzer.5. The system of claim 4 , wherein the separating unit comprises:a first vessel configured to separate the oxygen from the water in the water/oxygen output stream;a second vessel containing an air fan or blower configured to dilute the separated oxygen with air;a venturi having an inlet fluidly connected to the first vessel and an outlet fluidly connected to the second vessel; andan air return conduit having an inlet fluidly ...

Method for operation of blast furnace

A method for a blast furnace includes pulverizing coal to make pulverized coal, and pulverizing iron ore to make pulverized iron ore, and injecting the pulverized coal and the pulverized iron ore from a tuyere. A loss on ignition of the iron ore is greater than or equal to 9% by mass and less than or equal to 12% by mass, an injection rate of the pulverized coal is greater than or equal to 150 kg/tp, and an injection rate of the pulverized iron ore is greater than or equal to 2.5 kg/tp and less than or equal to 50.0 kg/tp.

Carbon-negative metallurgical products

Some variations provide a carbon-negative carbon product that is characterized by a carbon intensity less than 0 kg CO2e per metric ton of the carbon-negative carbon product, wherein the carbon-negative carbon product contains at least about 50 wt % carbon. In some embodiments, the carbon intensity is less than −500 kg CO2e per metric ton of the carbon-negative carbon product. Other variations provide a carbon-negative metal product (e.g., a steel product) that is characterized by a carbon intensity less than 0 kg CO2e per metric ton of the carbon-negative metal product, wherein the metal product contains from 50 wt % to 100 wt % of one or more metals and optionally one or more alloying elements. In some embodiments, the carbon-negative metal product is characterized by a carbon intensity less than −200 kg CO2e per metric ton of the carbon-negative metal product. The carbon-negative metal product can contain a wide variety of metals.

METHOD AND SYSTEM FOR OPERATING A BLAST FURNACE WITH TOP-GAS RECYCLE AND A FIRED TUBULAR HEATER

A blast furnace system is used wherein the coke rate is decreased by recycling upgraded top gas from the furnace back into its shaft section (which upgraded top gas is heated in a tubular heater prior to being recycled). The top gas, comprising CO, COand H, is withdrawn from the upper part of the blast furnace; cooled and cleaned of dust, water, and COfor increasing its reduction potential and is heated to a temperature above 850° C. before being recycled thus defining a first gas flow path used during normal operation of the blast furnace. Uniquely, a second gas flow path for continued circulation of top gas selectively through the heater and a cooler during operation interruptions of the blast furnace allows time for gradual controlled cool down of the heater in a manner to avoid heat-shock damage to the tubular heater. 1. A blast furnace system for producing molten iron in a blast furnace to which iron ore , metallurgical coke and fluxes are charged at its upper part and molten iron and slag are tapped from its lower part , said blast furnace having a plurality of tuyeres in its lower part for introducing an oxygen-containing gas for generating heat and reducing gases by combustion of the coke within said furnace; first cooling means for washing and cooling said top gas stream and removing dust and water therefrom being connected to receive a hot top gas stream from the upper part of said blast furnace;', 'pump means for increasing the pressure of the resulting cooled top gas stream to enable recycling of said top gas to the blast furnace;', {'sub': 2', '2, 'means for removing COfrom at least a portion of said cooled top gas stream forming a CO-lean reducing gas stream,'}, {'sub': '2', 'a tubular gas heater for heating said CO-lean reducing gas stream to a temperature above 850° C., and'}, 'first piping means connecting the foregoing components of said blast furnace system defining a first gas circulation gas path through said gas heater to recycle said hot ...

METHODS AND APPARATUS FOR ENHANCING THE ENERGY CONTENT OF CARBONACEOUS MATERIALS FROM PYROLYSIS

Processes and systems for converting biomass into high-carbon biogenic reagents that are suitable for a variety of commercial applications. Pyrolysis in the presence of an inert gas is employed to generate hot pyrolyzed solids, condensable vapors, and non-condensable gases, followed by separation of vapors and gases, and cooling of the hot pyrolyzed solids in the presence of the inert gas. Additives may be introduced during processing or combined with the reagent, or both. The biogenic reagent may include at least 70 wt %, 80 wt %, 90 wt %, 95 wt %, or more total carbon on a dry basis. The biogenic reagent may have an energy content of at least 12,000 Btu/lb, 13,000 BtU/lb, 14,000 Btu/lb, or 14,500 Btu/lb on a dry basis. The biogenic reagent may be formed into fine powders, or structural objects. The structural objects may have a structure and/or strength that derive from the feedstock, heat rate, and additives. 171-. (canceled)72. A process for producing a high-carbon biogenic reagent , the process comprising:(a) providing a carbon-containing feedstock comprising biomass;(b) in a pyrolysis zone, pyrolyzing the feedstock in the presence of a substantially inert gas for at least 10 minutes at a pyrolysis temperature from about 250° C. to about 700° C., thereby generating hot pyrolyzed solids, condensable vapors, and non-condensable gases;(c) separating at least a portion of the condensable vapors and at least a portion of the non-condensable gases from the hot pyrolyzed solids;(d) in a cooling zone, cooling the hot pyrolyzed solids, in the presence of the substantially inert gas for at least 5 minutes at a cooling temperature less than the pyrolysis temperature, thereby generating warm pyrolyzed solids;(e) subsequently passing at least a portion of the condensable vapors and/or at least a portion of the non-condensable gases from step (c) across the warm pyrolyzed solids, thereby forming enhanced pyrolyzed solids with increased carbon content; and(f) recovering a ...

Optimization method for directional preparation technique and efficient use of semi-coke for blast furnace injection

An optimization method for a directional preparation technique and efficient use of semi-coke for blast furnace injection. Firstly, the volatile and the ash content of target semi-coke are preset, and then the volatile and the ash removal percentages of a raw coal are calculated; after ash removal, several sets of dry distillation carbonization temperatures and carbonization times are obtained according to the volatile removal percentage, and the relationships between a combustion rate, abrasiveness, explosiveness and jet flow property and the carbonization temperature are respectively established to obtain the optimal actual carbonization temperature; and semi-coke for blast furnace injection is obtained at an actual carbonization temperature. The directional preparation is suitable for the semi-coke for blast furnace injection, and an optimal coal-compounding scheme is obtained, thus achieving the efficient and safe injection of blast furnace iron-making fuels, and energy conservation and emission reduction.

BLAST FURNACE OPERATION METHOD

A method of operating a blast furnace by blowing a pulverized coal at an amount of not less than 150 kg/t−p from tuyeres through a lance into a blast furnace, wherein when the operation is performed under a condition that lump coke charged from a furnace top has a strength defined in JIS K2151 (DI) of not more than 87%, the pulverized coal blown through the tuyere contains not more than 60 mass % as a weight ratio of coal having a particle size of not more than 74 μm and has an average volatile matter of not more than 25 mass %, and a blast temperature blown through the tuyere is not higher than 1100° C., oxygen is simultaneously blown into the furnace with the blowing of the pulverized coals through the lance and a gas having an oxygen concentration of 60 vol %-97 vol % is used as a carrier gas for the blowing of the pulverized coal. 1. A method of operating a blast furnace by blowing a pulverized coal at an amount of not less than 150 kg/t−p from tuyeres through a lance into a blast furnace , wherein when the operation is performed under two or more of the following three conditions a , b and c:{'sup': '150', 'sub': '15', 'a. lump coke charged from a furnace top has a strength defined in JIS K2151 (DI) of not more than 87%;'}b. the pulverized coal blown through the tuyere contains not more than 60 mass % as a weight ratio of coal having a particle size of not more than 74 μm and has an average volatile matter of not more than 25 mass %; andc. a blast temperature blown through the tuyere is not higher than 1100° C.;oxygen is simultaneously blown into the furnace with the blowing of the pulverized coals through the lance and a gas having an oxygen concentration of 60 vol %-97 vol % is used as a carrier gas for the blowing of the pulverized coal.2. The method of operating a blast furnace according to claim 1 , wherein when the strength (DI) of the lump coke is not more than 85% claim 1 , a gas having an oxygen concentration of 70 vol %-97 vol % is used as a carrier ...

COAL MIXTURE, METHOD FOR MANUFACTURING COAL MIXTURE, AND METHOD FOR MANUFACTURING COKE

A coal mixture is provided that maintains a high level of coke strength after carbonization, even where coal having an excessively large permeation distance is used in a large amount. The coal mixture includes large-permeation-distance coal and permeation-distance-decreasing coal. The permeation-distance-decreasing coal has a mean maximum vitrinite reflectance Ro of 1.25% or more and a total inert amount TI of 30 vol. % or less. The blending ratio of the permeation-distance-decreasing coal in the coal mixture is in a range derived by multiplying the blending ratio of the large-permeation-distance coal by 0.25 or more and 3.0 or less. 1. A coal mixture comprising:large-permeation-distance coal; andpermeation-distance-decreasing coal, a mass fraction of the permeation-distance-decreasing coal in the coal mixture is in a range derived by multiplying a mass fraction of the large-permeation-distance coal by 0.25 or more and 3.0 or less,', 'the permeation-distance-decreasing coal has a mean maximum vitrinite reflectance Ro of 1.25% or more and a total inert amount TI of 30 vol. % or less,', placing a material having through-holes penetrating from an upper surface to a lower surface of the material on the top of a coal sample packed in a container;', 'heating the coal sample to permeate into the through-holes; and', 'determining a distance over which the coal permeates into the through-holes as the permeation distance (mm), and, 'the large-permeation-distance coal has a permeation distance (mm) that is determined by the following steps, [{'br': None, 'i': '×a', 'criteria permeation distance=1.3×log MF\u2003\u2003[I]'}, 'where MF is the Gieseler maximum fluidity (ddpm) of coal, and', 'a is a constant defined as a coefficient of the common logarithm log MF of Gieseler maximum fluidity MF multiplied by a value in the range of 0.7 or more and 1.0 or less, when a regression line that passes through the origin is drawn based on data sets of the determined value of permeation ...

METHOD FOR IRON-MAKING WITH FULL OXYGEN AND HYDROGEN-RICH GAS AND EQUIPMENT THEREOF

A method of ironmaking using full-oxygen hydrogen-rich gas which includes hot transferring and hot charging the high-temperature coke, sinter and pellet into the ironmaking furnace through transferring and charging device, and injecting oxygen and hydrogen-rich combustible gas at a predetermined temperature into the ironmaking furnace through the oxygen tuyere and the gas tuyere disposed at the ironmaking furnace, respectively. It also provides an apparatus for ironmaking using full-oxygen hydrogen-rich gas which includes a raw material system, a furnace roof gas system, a coke oven gas injecting system, a dust injecting system, a slag dry-granulation and residual heat recovering system and an oxygen system. Additionally an apparatus and method for hot transferring and hot charging of ironmaking raw material is disclosed. 1. A method of ironmaking , comprising:directly transferring coke manufactured by a coke oven into a first transmit silo through a closed first transferring device, directly transferring sinter manufactured by a sintering machine into a second transmit silo through a closed second transferring device, and directly transferring pellet manufactured by a pellet firing machine into a third transmit silo through a closed third transferring device;transferring the coke in the first transmit silo into a closed fourth transferring device via a first weighing hopper connected with the first transmit silo through a pipeline or a closed chute, transferring the sinter in the second transmit silo into the fourth transferring device via a second weighing hopper connected with the second transmit silo through a pipeline or a closed chute, and transferring the pellet in the third transmit silo into the fourth transferring device via a third weighing hopper connected with the third transmit silo through a pipeline or a closed chute, the coke, the sinter, and the pellet transferred into the fourth transferring device having a predetermined weight ratio; ...

EXHAUST GAS TREATMENT METHOD AND EXHAUST GAS TREATMENT FACILITY

An exhaust gas treatment method includes: burning a combustible component in exhaust gas by causing the exhaust gas, which is produced in an electric furnace, to flow into a slag holding furnace and supplying oxygen-containing gas into the slag holding furnace; causing the burned exhaust gas to flow from the slag holding furnace to a suction device through an exhaust gas pipe; adjusting an internal pressure of the electric furnace by introducing external air into the exhaust gas pipe through an opening portion provided in the middle of the exhaust gas pipe; and changing an area of the opening portion depending on a variation in the internal pressure of the electric furnace by using an opening area changing unit provided in the opening portion. 1. An exhaust gas treatment method in a slag treatment process in which molten slag produced in a steelmaking step is charged into a slag holding furnace , the molten slag is poured from the slag holding furnace into an electric furnace , which accommodates a molten iron layer and a molten slag layer formed on the molten iron layer , the molten slag is continuously reduced in the electric furnace , and valuable materials in the molten slag are collected into the molten iron layer , the method comprising:burning a combustible component in exhaust gas by causing the exhaust gas, which is produced in the electric furnace, to flow into the slag holding furnace and supplying oxygen-containing gas into the slag holding furnace;causing the burned exhaust gas to flow from the slag holding furnace to a suction device through an exhaust gas pipe;adjusting an internal pressure of the electric furnace by introducing external air into the exhaust gas pipe through an opening portion provided in the middle of the exhaust gas pipe; andchanging an area of the opening portion depending on a variation in the internal pressure of the electric furnace by using an opening area changing unit provided in the opening portion.2. The exhaust gas ...

METHOD FOR OPERATING AN IRON- OR STEELMAKING- PLANT

A method of operating an ironmaking or steelmaking plant with low CO-emissions is provided. Hydrogen and oxygen are generated by water decomposition and at least part of the generated hydrogen is injected as a reducing gas into one or more ironmaking furnaces with off-gas decarbonation and reinjection into the furnaces of at least a significant part of the decarbonated off-gas and at least part of the generated oxygen is injected as an oxidizing gas in the one or more ironmaking. 115.-. (canceled)16. A method of operating an ironmaking or steelmaking plant comprising an ironmaking furnace set comprising one or more furnaces in which iron ore is transformed into liquid hot metal by means of a process which includes iron ore reduction , melting and off-gas generation , the ironmaking or steelmaking plant , the method comprising the steps of:a. charging the ironmaking furnace set with iron ore and coke,b. injecting oxidizing gas into the ironmaking furnace set,{'sub': 2', '2, 'c. producing an off-gas and decarbonating the off-gas downstream of the ironmaking furnace set thereby obtaining a CO-enriched tail gas stream and a decarbonated off-gas stream containing not more than 10% vol CO,'}d. injecting at least 50% of the decarbonated off-gas stream back into the ironmaking furnace set as a reducing gas recycle stream,e. generating hydrogen and oxygen by means of water decomposition,f. injecting at least part of the hydrogen generated in step into the ironmaking furnace set, andg. injecting at least part of the generated oxygen into the ironmaking furnace set and/or the converter as oxidizing gas.17. The method according to claim 16 , whereby at least part of the hydrogen generated in step (e) which is injected into the ironmaking furnace set is mixed with the reducing gas recycle stream before the gas mixture so obtained is injected into the ironmaking furnace set.18. The method according to claim 16 , wherein:h. the gas recycle stream or the mixture of hydrogen ...

BLAST FURNACE APPARATUS AND OPERATION METHOD FOR BLAST FURNACE

Disclosed is a blast furnace apparatus includes: a rotating chute; a plurality of tuyeres; a profile measurement device configured to measure surface profiles of a burden charged into the blast furnace through the rotating chute; and a blowing amount controller configured to control a blowing amount of at least one of hot blast or pulverized coal in each of the plurality of tuyeres, in which the profile measurement device includes: a radio wave distance meter installed on the blast furnace top and configured to measure the distance to the surface of the burden charged; and an arithmetic unit configured to derive the surface profiles of the burden on a basis of distance data for the entire blast furnace related to distances to the surface of the burden obtained by scanning a detection wave of the radio wave distance meter in the blast furnace in a circumferential direction. 1. A blast furnace apparatus comprising:a rotating chute configured to charge a raw material into a blast furnace from a blast furnace top;a plurality of tuyeres configured to blow hot blast and pulverized coal into the blast furnace;a profile measurement device configured to measure surface profiles of a burden charged into the blast furnace through the rotating chute; anda blowing amount controller configured to control a blowing amount of at least one of the hot blast or the pulverized coal in each of the plurality of tuyeres, wherein a radio wave distance meter installed on the blast furnace top and configured to measure the distance to the surface of the burden in the blast furnace; and', 'an arithmetic unit configured to derive the surface profiles of the burden on a basis of distance data for the entire blast furnace related to distances to the surface of the burden obtained by scanning a detection wave of the radio wave distance meter in the blast furnace in a circumferential direction., 'the profile measurement device comprises2. The blast furnace apparatus according to claim 1 , wherein ...

DESULFURIZATION OF GASES IN THE PRODUCTION OF PIG IRON

A process for producing liquid pig iron (), in which charge materials () containing iron oxide are reduced by a reducing gas () in a first reduction plant () to form a partially reduced first iron product () and are melted in a fusion gasifier () to form the liquid pig iron (). The spent reducing gas () is introduced as export gas () into a second reduction plant (), wherein a sulfur-containing gas () is introduced together with an oxygen-containing gas () and/or together with dust () into the fusion gasifier () and/or into the reducing gas line (). Also, a device for carrying out the process. It is therefore possible for sulfur-containing gas () to be used for production of liquid pig iron (), or DRI, with a simultaneous increase in productivity, without damaging the environment or adversely affecting the quality of the liquid pig iron () or of the DRI. 1. A process for producing liquid pig iron , the process comprising:reducing iron-oxide containing charge materials to produce a part-reduced first iron product in a first reduction unit, the reducing being by means of a reducing gas and then drawing off the reducing gas spent in the reduction as export gas;{'sub': '2', 'removing COfrom the export gas and then introducing the export gas into at least one second reduction unit for producing a part-reduced second iron product;'}introducing the part-reduced first iron product, an oxygen-containing gas, and carbon carriers into a melter gasifier;in the melter gasifier, gasifying the carbon carriers with the oxygen-containing gas and melting the part-reduced first iron product to produce the liquid pig iron with formation of the reducing gas;introducing at least a portion of the reducing gas into the first reduction unit by a reducing-gas line;jetting or introducing a sulfur-containing coke-oven gas, a sulfur-containing natural gas, or a mixture of the sulfur-containing natural gas and the coke-oven gastogether with the oxygen-containing gas and optionally together with ...

GAS PRODUCTION APPARATUS, GAS PRODUCTION SYSTEM, STEEL PRODUCTION SYSTEM, CHEMICAL PRODUCTION SYSTEM, AND GAS PRODUCTION METHOD

Provision of a gas production apparatus that can stably produce a product gas with carbon monoxide as its main component from a separated gas including carbon dioxide as a main component. 1. A gas production apparatus that produces a product gas including carbon monoxide as a main component by using an exhaust gas taken from a line of exhaust gas equipment that is equipped with a furnace , a smokestack that releases exhaust gas containing carbon dioxide emitted from the furnace , and the line connecting the smokestack to the furnace , comprising:a separation and capture section that separates and captures a separated gas including carbon dioxide as a main component from the exhaust gas,a reaction section including at least one reactor which is connected to downstream of the separation and capture section, contains a reductant that contacts with the separated gas to produce carbon monoxide through the reduction reaction of carbon dioxide and is capable of separating at least some of the oxygen atoms splitted off from carbon dioxide in the reduction reaction system,a pressure regulating section connected to the downstream of the reaction section to regulate the pressure of the separated gas supplied to the reactor, anda flow regulating section connected to the upstream of the separation and capture section and regulating a flow rate of the separated gas supplied to the reactor.2. The gas production apparatus according to claim 1 , wherein concentration of the carbon dioxide in the separated gas is 70% or more by volume of the total separated gas.3. The gas production apparatus according to or claim 1 , wherein the pressure of the separated gas supplied to the reactor is 0 to 2 MPaG.4. The gas production apparatus according to any one of to claim 1 , wherein at least one reactor includes a plurality of reactors that have a reducing agent containing a metal oxide that reduces carbon dioxide as the reductant claim 1 , andthe apparatus further has a reducing gas supply ...

SYSTEM AND METHOD FOR PRODUCING STEEL

System and method for producing steel is provided that efficiently reduce carbon dioxide emissions. A steel production system includes: a first gas generating section configured to obtain a first gas by converting carbon monoxide, to carbon dioxide, in a gas containing the carbon dioxide and carbon monoxide; a reducing gas supply section configured to supply a reducing gas containing a reducing substance to reduce a reducing agent, the reducing agent containing metal oxide to reduce carbon dioxide and being oxidized by contact with the carbon dioxide; and a reaction section including a plurality of reactors and , respectively connected to at least one of the first gas generating section and the reducing gas supply section , and the reducing agent arranged in the reactors and , the reaction section being capable of switching between the first gas and the reducing gas to be supplied to each of the reactors and , wherein a second gas is configured to be supplied to a blast furnace, the second gas being obtained by contacting the first gas supplied to the reactors and with the reducing agent to convert the carbon dioxide to carbon monoxide and the second gas having the carbon monoxide as a main component. 1. A steel production system comprising:a first gas generating section configured to obtain a first gas by converting carbon monoxide in a gas containing the carbon dioxide and carbon monoxide to carbon dioxide;a reducing gas supply section configured to supply a reducing gas containing a reducing substance to reduce a reducing agent which contain metal oxide to reduce carbon dioxide and being oxidized by contact with the carbon dioxide; anda reaction section including a plurality of reactors, which are respectively connected to at least one of the first gas generating section and the reducing gas supply section, and in which the reducing agents are arranged, the reaction section being capable of switching between the first gas and the reducing gas to be supplied to ...

METHOD OF OPERATING REGENERATIVE HEATERS IN BLAST FURNACE PLANT

In a blast furnace plant, at least three regenerative heaters are cyclically operated on blast and on gas: while a regenerative heater is operated on gas, hot flue gas is produced and caused to flow through the regenerative heater so as to heat the heat storage elements; and while a regenerative heater is operated on blast, process gas, i.e. a CO-rich fraction of the top gas, is blown through the regenerative heater so that the process gas takes up heat from the heat storage elements. During, such that during a changeover of a regenerative heater from on-blast to on-gas operation, the regenerative heater is purged from process gas using flue gas collected after having flown through at least one of the regenerative heaters.

SHAFT FURNACE AND METHOD OF OPERATING SAME

A method of operating a shaft furnace includes inserting a mixture including anthracite coal and coke into a cavity defined by the furnace, and disposing a metal feedstock within the cavity. The method includes injecting natural gas at a natural gas flow rate and a first quantity of oxygen gas at a first oxygen gas flow rate into the cavity simultaneously through at least one burner. The method also includes driving a second quantity of oxygen gas at a supersonic oxygen gas flow rate into the cavity through at least one lance, wherein the supersonic oxygen gas flow rate is greater than the first oxygen gas flow rate. The method also includes combusting the mixture within the cavity to produce a stack gas, melting the metal feedstock to produce a melted metal material, and monitoring the stack gas to thereby operate the shaft furnace. A shaft furnace is also disclosed. 1. A method of operating a shaft furnace , the method comprising:inserting a mixture including anthracite coal and coke into a cavity defined by the shaft furnace;disposing a metal feedstock within the cavity;injecting natural gas at a natural gas flow rate and a first quantity of oxygen gas at a first oxygen gas flow rate into the cavity simultaneously through at least one burner;driving a second quantity of oxygen gas at a supersonic oxygen gas flow rate into the cavity through at least one lance, wherein the supersonic oxygen gas flow rate is greater than the first oxygen gas flow rate;combusting the mixture within the cavity to produce a stack gas;melting the metal feedstock to produce a melted metal material; andmonitoring the stack gas to thereby operate the shaft furnace.2. The method of claim 1 , wherein inserting includes maintaining a fuel ratio of an amount of coke present in the mixture to an amount of anthracite coal present in the mixture at from about 1:0.1 to about 1:0.6.3. The method of claim 1 , wherein inserting includes disposing from about 10 parts by weight to about 35 parts by ...

METHOD FOR PRODUCING PIG IRON, AND BLAST FURNACE TO BE USED THEREFOR

A blast furnace () is equipped with: a blast-furnace body (); material-insertion means (-) for inserting a material () containing iron ore and coal into the interior of the blast-furnace body from the top section thereof; hot-air blowing means () for blowing hot air () into the interior of the blast-furnace body through the tuyere thereof; and blast-furnace-blowing-coal supply means (-) for blowing blast-furnace-blowing coal () into the interior of the blast-furnace body through the tuyere thereof. Therein, the blast-furnace-blowing-coal supply means blow a blast-furnace-blowing coal having the proportion of oxygen atoms contained therein (dry base) set to 10-20 wt %, and the average pore diameter set to 10-50 nm, while the hot-air blowing means measures the melting point of the ash in the material in advance, and blows hot air which is 100-150° C. lower than the melting point of the ash. 1. A pig iron producing method for producing pig iron from material iron ore by feeding material that includes iron ore and coal into a blast-furnace body from a top of the blast-furnace body , and blowing hot air and blast-furnace-injecting coal into the blast-furnace body from a tuyere;the blast-furnace-injecting coal having from 10 wt % to 20 wt % of oxygen atoms (dry base); andan average pore diameter of from 10 nm to 50 nm;a melting point of ash in the blast-furnace-injecting coal being measured in advance; anda temperature of the hot air being adjusted to a temperature 100 to 150° C. lower than the melting point of the ash.2. The pig iron producing method according to claim 1 , wherein the hot air is enriched with oxygen at the tuyere of the blast-furnace body.3. A blast furnace claim 1 , comprising:a blast-furnace body;material-insertion means for feeding material that includes iron ore and coal into the blast-furnace body from a top of the blast-furnace body;hot-air blowing means for blowing hot air into an interior from a tuyere of the blast-furnace body; andblast-furnace- ...

SYSTEMS AND APPARATUS FOR PRODUCTION OF HIGH-CARBON BIOGENIC REAGENTS

This invention provides processes and systems for converting biomass into highcarbon biogenic reagents that are suitable for a variety of commercial applications. Some embodiments employ pyrolysis in the presence of an inert gas to generate hot pyrolyzed solids, condensable vapors, and non-condensable gases, followed by separation of vapors and gases, and cooling of the hot pyrolyzed solids in the presence of the inert gas. Additives may be introduced during processing or combined with the reagent, or both. The biogenic reagent may include at least 70 wt %, 80 wt %, 90 wt %, 95 wt %, or more total carbon on a dry basis. The biogenic reagent may have an energy content of at least 12,000 Btu/lb, 13,000 Btu/lb, 14,000 Btu/lb, or 14,500 Btu/lb on a dry basis. The biogenic reagent may be formed into fine powders, or structural objects. 160-. (canceled)60. A biomass pyrolysis continuous reactor comprising a material feed system , a plurality of spatially separated reaction zones configured for separately controlling temperature and mixing within each of said reaction zones , and a carbonaceous-solids outlet , wherein one of said reaction zones is configured with a first gas inlet for introducing a substantially inert gas into said biomass pyrolysis continuous reactor , and wherein one of said reaction zones is configured with a first gas outlet.61. The biomass pyrolysis continuous reactor of claim 60 , wherein said biomass pyrolysis continuous reactor includes at least two reaction zones.6257. The biomass pyrolysis continuous reactor of claim claim 60 , wherein said biomass pyrolysis continuous reactor includes at least three reaction zones.63. The biomass pyrolysis continuous reactor of claim 62 , wherein said reactor includes at least four reaction zones.64. The biomass pyrolysis continuous reactor of claim 60 , wherein each of said reaction zones is disposed in communication with separately adjustable indirect heating means claim 60 , each independently selected from ...

BLAST FURNACE OPERATING METHOD AND TUBE BUNDLE-TYPE LANCE

A blast furnace operating method by blowing at least a solid reducing material into an inside of the furnace from a tuyere thereof with a lance, wherein a tube bundle-type lance formed by bundling a plurality of blowing tubes side-by-side and housing them in a main tube of the lance is used when only a solid reducing material or two kinds of a solid reducing material and a combustible gas or three kinds of a solid reducing material, a combustible gas and a gaseous reducing material are blown in the inside of the blast furnace, whereby the solid reducing material, combustible gas and gaseous reducing material are blown through the respective blowing tubes, and a tube bundle-type lance. 123-. (canceled)24. A method of operating a blast furnace by blowing at least a solid reducing material into an inside of the furnace from a tuyere thereof with a lance , wherein a tube bundle-type lance formed by bundling a plurality of blowing tubes side-by-side and housing them in a main tube of the lance is used when only a solid reducing material or two kinds of a solid reducing material and a combustible gas or three kinds of a solid reducing material , a combustible gas and a gaseous reducing material are blown in the inside of the blast furnace , whereby the solid reducing material , combustible gas and gaseous reducing material are blown through the respective blowing tubes.25. The method of operating a blast furnace according to claim 24 , wherein the solid reducing material is either a high volatile matter pulverized coal or a low volatile matter pulverized coal or both.26. The method of operating a blast furnace according to claim 24 , wherein a front end of the blowing tube for the high volatile matter pulverized coal is located at a distance of 0˜100 mm at an upstream side from a front end of the blowing tube for the low volatile matter pulverized coal when the high volatile matter pulverized coal and the low volatile matter pulverized coal are blown as the solid reducing ...

BLAST FURNACE INSTALLATION

A blast furnace installation () equipped with a blast furnace body (), a hot air blowing means (, etc.) for blowing hot air into the blast furnace body () through a tuyere, and a pulverized coal supply means for supplying pulverized coal () into the blast furnace body () through the tuyere. The pulverized coal () is obtained by means of dry distillation of low-grade coal. The pulverized coal supply means is equipped with: a pneumatic conveying means (-) for pneumatically conveying the pulverized coal () to the tuyere by means of a carrier gas () made of a mixture of air () and an inert gas (); a temperature sensor () for detecting the temperature of the carrier gas () near the tuyere; and a control unit () for adjusting the mixing ratio between the air () and the inert gas () in the carrier gas () of the pneumatic conveying means (-) on the basis of information from the temperature sensor (). 1. A blast furnace installation including:a blast furnace body;starting material charging means for charging starting material from a top into an interior of the blast furnace body;hot air blowing means for blowing hot air into the interior of the blast furnace body through a tuyere; and the pulverized coal is obtained by means of dry distillation of low-grade coal; and', pneumatic conveying means for pneumatically conveying the pulverized coal to the tuyere by means of a carrier gas made of a mixture of air and an inert gas;', 'carrier gas state detection means for detecting a state of the carrier gas near the tuyere; and', 'control means for adjusting a mixing ratio between the air and the inert gas in the carrier gas of the pneumatic conveying means based on information from the carrier gas state detection means., 'the pulverized coal supply means includes], 'pulverized coal supply means for supplying pulverized coal into the interior of the blast furnace body through the tuyere; wherein'}2. The blast furnace installation according to claim 1 , whereinthe carrier gas state ...

METHOD FOR PRODUCING MOLDED PRODUCT FOR FERROCOKE

A method for producing a molded product for ferrocoke, wherein a high-strength molded product for ferrocoke can be produced advantageously without making particular investment in facilities and inviting the operating troubles. In a method for producing a molded product for ferrocoke by molding a mixed starting material of coal, an iron-source material, a high-softening point binder having a softening point of not lower than 150° C., and a low-softening point binder having a softening point of lower than 150° C., at least one of the iron-source material and the high-softening point binder is previously heated to not less than a temperature lower by 20° C. than a softening point of the high-softening point binder to perform molding of the mixture. 16-. (canceled)7. A method for producing a molded product for ferrocoke by molding a mixed starting material of coal , an iron-source material , a high-softening point binder having a softening point of not lower than 150° C. , and a low-softening point binder having a softening point of lower than 150° C. , characterized in that at least one of the iron-source material and the high-softening point binder is previously heated to not less than a temperature lower by 20° C. than a softening point of the high-softening point binder to perform molding of the mixture.8. The method for producing a molded product for ferrocoke according to claim 7 , wherein iron-source particles having an average particle size of not more than 2.0 mm are used as the iron-source material claim 7 , heated to not less than a temperature lower by 20° C. than the softening point of the high-softening point binder claim 7 , then mixed with the high-softening point binder claim 7 , and thereafter mixed with the low-softening point binder having a softening point of lower than 150° C. to mold the mixed starting material.9. The method for producing a molded product for ferrocoke according to claim 7 , wherein iron-source particles having an average particle ...

BLAST-FURNACE-BLOW-IN CHARCOAL AND METHOD FOR PRODUCING SAME

In blast-furnace-blow-in charcoal that is blown in from a tuyere to the interior of a blast furnace main body of a blast furnace facility, the oxygen atom content (on a dry basis) is 10-20 wt % and the average pore size is 10-50 nm. 1. Blast furnace injection coal to be blown into a blast furnace main unit of a blast furnace installation through a tuyere , whereinan oxygen atom content ratio (dry base) is between 10 and 20% by weight, andan average pore size is between 10 and 50 nm.2. The blast furnace injection coal according to claim 1 , wherein a pore volume is between 0.05 and 0.5 cm/g.3. The blast furnace injection coal according to claim 1 , wherein a specific surface area is between 1 and 100 m/g.4. A method of manufacturing the blast furnace injection coal according to claim 1 , wherein the method comprises:a drying step of heating subbituminous coal or brown coal to remove moisture; anda pyrolysis step of performing pyrolysis at a temperature between 460 and 590° C. on the coal dried in the drying step.5. The method of manufacturing the blast furnace injection coal according to claim 4 , wherein the method further comprises:a cooling step of cooling the coal subjected to the pyrolysis in the pyrolysis step to a temperature between 50 and 150° C.; anda partially oxidizing step of partially oxidizing the coal cooled in the cooling step by exposing the coal in an oxygen-containing atmosphere at a temperature between 50 and 150° C. to let the coal chemically adsorb oxygen. The present invention relates to blast furnace injection coal and a method of manufacturing the same.Blast furnace installations are designed to be capable of manufacturing pig iron from iron ore by charging raw materials such as iron ore, limestone, and coke into the blast furnace main unit through the top and blowing hot air and pulverized coal (PCI coal) as auxiliary fuel through the tuyeres on the lower lateral side.As such blast furnace injection coal, coals have been proposed which are ...

BLAST-FURNACE BLOWING COAL AND METHOD FOR PRODUCING SAME

A method for producing blast-furnace blowing coal to be blown through a tuyere into the interior of the blast-furnace body of a blast furnace, wherein: the composition and melting point of the ash from the coal are analyzed in advance; the composition of the blast-furnace slag is analyzed in advance; the blast-furnace slag contains more calcium oxide than the coal ash does; and the coal and the blast-furnace slag are mixed, on the basis of the composition and melting point of the coal ash and the composition of the blast-furnace slag, and in a manner such that the amount of calcium oxide contained in a quaternary system phase diagram including silicon dioxide, magnesium oxide, aluminum oxide and calcium oxide, which are the principal components of the coal ash and the blast-furnace slag, causes the melting point of the ash to be 1400° C. or higher. 1. Blast-furnace injecting coal which is injected through a tuyere into an interior of a blast-furnace body of a blast furnace;a composition and a melting point of coal ash being analyzed in advance and a composition of iron and steel slag produced by an iron and steel production step being analyzed in advance;the iron and steel slag containing more calcium oxide than the coal ash does; andthe coal and the iron and steel slag being mixed, on the basis of the composition and melting point of the coal ash and the composition of the iron and steel slag, and in a manner such that a content of calcium oxide contained in a quaternary system phase diagram including silicon dioxide, magnesium oxide, aluminum oxide and calcium oxide, which are principal components of the coal ash and the iron and steel slag, causes the melting point of the ash to be 1400° C. or higher.2. The blast-furnace injecting coal according to claim 1 , whereinthe coal has been pulverized to an average particle size of not greater than 1 mm, andthe iron and steel slag has been pulverized to a particle size of 20 μm to 100 μm.3. The blast-furnace injecting ...

METHOD AND DEVICE FOR PROCESSING IRON SILICATE ROCK

A method is used to process iron silicate rock. At least one component is at least partially removed from the iron silicate rock. At least one component that is different from iron is thus removed from the iron silicate rock. The processed iron silicate rock is used for the production of pig iron or steel. The device for utilizing the processed silicate rock is designed as a device for producing pig iron or steel. 111-. (canceled)12. A process for treating iron silicate rock , comprising the steps of: at least partly removing at least one constituent other than iron from the iron silicate rock; and using the treated iron silicate rock for producing pig iron or steel.13. The process according to claim 12 , wherein the iron silicate rock is treated in a liquid state.14. The process according to claim 12 , wherein the iron silicate rock is treated at a temperature of from about 1300° C. to 1600° C.15. The process according to claim 12 , including introducing a reducing agent.16. The process according to claim 12 , including carrying out the treatment in a plurality of stages.17. The process according to claim 12 , including introducing oxygen for at least part of the time during treatment.18. The process according to claim 12 , including carrying out the treatment within an electric furnace with bottom flushing.19. An apparatus for treating iron silicate rock claim 12 , comprising: a furnace that has a feed facility for a gas claim 12 , the iron silicate rock being treated in the furnace.20. An apparatus for processing treated iron silicate rock claim 12 , wherein the apparatus is configured as a facility for producing pig iron or steel.21. The apparatus according to claim 20 , the facility is a blast furnace. The invention relates to a process for treating iron silicate rock in which at least one constituent is at least partly removed from the iron silicate rock.The invention also relates to an apparatus for processing treated iron silicate rock.Iron silicate rock is ...

MANUFACTURING PROCESS CONTROL WITH DEEP LEARNING-BASED PREDICTIVE MODEL FOR HOT METAL TEMPERATURE OF BLAST FURNACE

A blast furnace control system may include a hardware processor that generates a deep learning based predictive model for forecasting hot metal temperature, where the actual measured HMT data is only available sparsely, and for example, measured at irregular interval of time. HMT data points may be imputed by interpolating the HMT measurement data. HMT gradients are computed and a model is generated to learn a relationship between state variables and the HTM gradients. HMT may be forecasted for a time point, in which no measured HMT data is available. The forecasted HMT may be transmitted to a controller coupled to a blast furnace, to trigger a control action to control a manufacturing process occurring in the blast furnace. 1. A method of controlling a manufacturing process in a blast furnace , the method executed by at least one hardware processor , the method comprising:receiving manufacturing process data associated with a blast furnace, the manufacturing process data including at least state variables and control variables used in operating the blast furnace, the state variables including at least a hot metal temperature (HMT) and other state variables, wherein the manufacturing process data includes at least a plurality of measured HMT at different time points, of a product produced in the blast furnace;generating imputed HMT by interpolating the measured HMT;generating HMT gradients based on at least the imputed HMT;defining a causal relationship between at least one of the other state variables and the HMT gradients, the relationship generated as a neural network model;training the neural network model using as training data, a weighted combination of the imputed HMT up to a last known measured HMT and predicted HMT up to the last known measured HMT,the trained neural network model trained to predict a current point in time value for the HMT, in which no measured HMT for the current point in time is available, wherein the trained neural network model ...

PROCESS FOR PRODUCING HIGH-CARBON BIOGENIC REAGENTS

This invention provides processes and systems for converting biomass into high carbon biogenic reagents that are suitable for a variety of commercial applications. Some embodiments employ pyrolysis in the presence of an inert gas to generate hot pyrolyzed solids, condensable vapors, and non-condensable gases, followed by separation of vapors and gases, and cooling of the hot pyrolyzed solids in the presence of the inert gas. Additives may be introduced during processing or combined with the reagent, or both. The biogenic reagent may include at least 70 wt %, 80 wt %, 90 wt %, 95 wt %, or more total carbon on a dry basis. The biogenic reagent may have an energy content of at least 12,000 Btu/lb, 13,000 Btu/lb, 14,000 Btu/lb, or 14,500 Btu/lb on a dry basis. The biogenic reagent may be formed into fine powders, or structural objects. The structural objects may have a structure and/or strength that derive from the feedstock, heat rate, and additives. 1. A process for producing a high-carbon biogenic reagent , the process comprising:providing a carbon-containing feedstock comprising dry biomass;in a preheating zone, preheating the feedstock in the presence of a substantially inert gas;in a pyrolysis zone, pyrolyzing the feedstock in the presence of a substantially inert gas to thereby generate hot pyrolyzed solids, condensable vapors, and non-condensable gases;separating at least a portion of the condensable vapors and at least a portion of the non-condensable gases from the hot pyrolyzed solids;in a cooling zone, cooling the hot pyrolyzed solids, in the presence of the substantially inert gas and with a cooling temperature less than the pyrolysis temperature, to generate warm pyrolyzed solids;in a cooler that is separate from the cooling zone, cooling the warm pyrolyzed solids to generate cool pyrolyzed solids; andrecovering a high-carbon biogenic reagent comprising at least a portion of the cool pyrolyzed solids;wherein the process further comprises introducing at ...

METHOD FOR PRODUCING FERROCOKE

A method for producing ferrocoke in which it is possible to use a cheap and poor-quality coal having a high ash content while suppressing the decrease of the strength in ferrocoke or formed coke and a special coal mixing is not performed with respect to the fusion frequently causing problems in the carbonization with the shaft furnace. In a method for producing ferrocoke by molding and carbonizing a mixture of coal and iron ore, the coal is a single coal or a mixture of plural coals and a non-caking or slight caking coal having a load average value of ash content of not less than 10.7% and a load average value of mean maximum reflectance of not less than 0.81% is used. 1. A method for producing ferrocoke by molding and carbonizing a mixture of coal and iron ore , characterized in that the coal is a single coal or a mixture of plural coals and a non-caking or slight caking coal having a load average value of ash content of not less than 10.7% and a load average value of mean maximum reflectance of not less than 0.81% is used.2. The method for producing ferrocoke according to claim 1 , wherein the compression molding is conducted at a density of not less than 1400 kg/min the molding of the mixture of coal and iron ore. This invention relates to a method for producing ferrocoke by molding and carbonizing a mixture of coal and iron ore.As a function of chamber oven coke is mentioned a securement of air permeability in a packed bed inside a blast furnace. In order to ensure the air permeability, it is necessary that coke is hardly pulverized during the unloading inside the blast furnace, and hence it is required to produce a high-strength coke.Heretofore, many examinations on the mixing theory of coal have been performed for the production of the high-strength coke. In the site of producing coke is performed the mixing of coals so as to attain a maximum reflectance (Ro) of about 1.2% and a maximum fluidity (MF) of about 200-1000 ddpm (Non-patent Document 1). High-quality ...

METHOD FOR PRODUCING PIG IRON AND BLAST FURNACE FACILITY USING SAME

This blast furnace facility is provided with: a blast furnace main body (); starting material charging means (-) that charge a starting material () containing iron ore and coke into the interior of the blast furnace main body () from the apex thereof; hot airflow blow-in means () that blows in a hot airflow () from a tuyere to the interior of the blast furnace main body (); and blast-furnace-blow-in charcoal supply means (-) that blow in blast-furnace-blow-in charcoal () from the tuyere to the interior of the blast furnace main body (). The blast-furnace-blow-in charcoal supply means (-) blow in a blast-furnace-blow-in charcoal () having an oxygen atom content (on a dry basis) of 10-20 wt % and an average pore size of 10-50 nm. 1. A method of manufacturing pig iron , comprising: charging a raw material containing iron ore and coke into a blast furnace main unit from a top thereof and blowing hot air and blast furnace injection coal into the blast furnace main unit from a tuyere thereof to thereby manufacture pig iron from the iron ore in the raw material , whereinthe blast furnace injection coal has an oxygen atom content ratio (dry base) of between 10 and 20% by weight and an average pore size of between 10 and 50 nm.2. The method of manufacturing pig iron according to claim 1 , wherein the blast furnace injection coal has a pore volume of between 0.05 and 0.5 cm/g.3. The method of manufacturing pig iron according to claim 1 , wherein the blast furnace injection coal has a specific surface area of between 1 and 100 m/g.4. A blast furnace installation claim 1 , comprising:a blast furnace main unit;raw material charging means for charging a raw material containing iron ore and coke into the blast furnace main unit from a top thereof;hot air blowing means for blowing hot air into the blast furnace main unit from a tuyere thereof; andblast furnace injection coal feeding means for feeding blast furnace injection coal into the blast furnace main unit from the tuyere, ...

METHOD FOR PREPARING BLAST FURNACE BLOW-IN COAL

On the basis of data obtained by means of analyzing coal, a first and second coal type satisfying conditions are selected, the ash melting point of the mixed coal resulting from mixing the first and second coal types is derived on the basis of a four-dimensional state diagram for SiO—CaO—MgO-20% AlO, on the basis of the ash melting point of the mixed coal and the four-dimensional state diagram, an additive causing the ash melting point of the mixed coal to be at least 1400° C. at the lowest quantity when added to the mixed coal is selected from SiO, MgO, and CaO, the addition quantity of the additive is derived, the first coal type and second coal type are mixed to result in the mixed coal, and the addition quantity of the additive is added to the mixed coal. 1. A method for preparing blast furnace blow-in coal blown from a tuyere into an interior of a blast furnace main body of a blast furnace installation , the method comprising:a first step of analyzing a moisture content of run-of-mine coal, ash of the coal, and weight percentages of Al, Si, Ca and Mg in the ash;{'sub': 2', '3', '2, 'a second step of selecting, on the basis of data obtained by analysis, a first coal type, of which the moisture content in the run-of-mine coal is less than 15% by weight, and a total weight of Al, Si, Ca and Mg oxides in the ash is not less than 70% by weight of the ash weight, and, when the total of Al, Si, Ca and Mg oxides in the ash is taken as 100% by weight, an AlOcontent is 20% by weight±5% by weight, and an SiOcontent is not less than 70% by weight;'}{'sub': 2', '3', '2, 'a third step of selecting, on the basis of data obtained by analysis, a second coal type, of which the moisture content in the run-of-mine coal is not less than 15% by weight, and the total weight of Al, Si, Ca and Mg oxides in the ash is not less than 70% by weight of the ash weight, and, when the total of Al, Si, Ca and Mg oxides in the ash is taken as 100% by weight, the AlOcontent is 20% by weight±5% by ...

METHOD FOR OPERATING A BLAST FURNACE

A method for operating a blast furnace that increases combustion temperature and reduces fuel consumption rate is provided. The method includes injecting hot air into the blast furnace from a tuyere. A solid reduction agent and at least one of a flammable reduction agent and a combustion-supporting gas are injected into the blast furnace, with the hot air, from the tuyere and through a lance. The solid reduction agent contains 65 mass % or less of particles whose particle diameter is greater than or equal to 75 μm. The method facilitates efficient mixing, accelerates the reaction between the pulverized coal and the combustion-supporting gas, and increases the temperature of the pulverized coal. Therefore, the combustion speed of the pulverized coal is increased, which increases the combustion temperature and reduces the reduction agent ratio. 1. A method for operating a blast furnace , the method comprising:injecting hot air into the blast furnace from a tuyere; andwhile injecting the hot air into the blast furnace, injecting (i) at least one of a flammable reduction agent and a combustion-supporting gas and (ii) a pulverized solid reduction agent into the blast furnace from the tuyere and through a lance,wherein the solid reduction agent contains 65 mass % or less of particles whose particle diameter is greater than or equal to 75 μm.2. The method according to claim 1 , further including injecting the combustion-supporting gas into the blast furnace claim 1 ,wherein the combustion-supporting gas is an oxygen gas that enriches the hot air and has an oxygen concentration that is greater than or equal to 50 vol %.3. The method according claim 1 , wherein the solid reduction agent is pulverized coal.4. The method according to claim 1 , further including injecting the flammable reduction agent into the blast furnace;wherein the flammable reduction agent is selected from the group consisting of hydrogen urban gas, LNG, propane gas, converter gas, blast-furnace gas, coke- ...

Process for producing high-carbon biogenic reagents

This invention provides processes and systems for converting biomass into high carbon biogenic reagents that are suitable for a variety of commercial applications. Some embodiments employ pyrolysis in the presence of an inert gas to generate hot pyrolyzed solids, condensable vapors, and non-condensable gases, followed by separation of vapors and gases, and cooling of the hot pyrolyzed solids in the presence of the inert gas. Additives may be introduced during processing or combined with the reagent, or both. The biogenic reagent may include at least 70 wt %, 80 wt %, 90 wt %, 95 wt %, or more total carbon on a dry basis. The biogenic reagent may have an energy content of at least 12,000 Btu/lb, 13,000 Btu/lb, 14,000 Btu/lb, or 14,500 Btu/lb on a dry basis. The biogenic reagent may be formed into fine powders, or structural objects. The structural objects may have a structure and/or strength that derive from the feedstock, heat rate, and additives.

SMELTING APPARATUS AND METALLURGICAL PROCESSES THEREOF

The present document describes a smelting apparatus for smelting metallic ore. The smelting apparatus comprises a furnace having a continuous curved wall and end walls defining a longitudinal volume having a longitudinal axis in a horizontal direction. The continuous curved wall has a lowermost area. The longitudinal volume is divided in at least three longitudinal layers comprising a top layer within which gasified fuel is combusted for creating a hot gas composition at a temperature sufficient to release, from the metallic ore, at least molten metal and slag, a lowermost layer at the lowermost area for holding molten metal, and a mid-layer above the lowermost layer in which the slag accumulates. The present document also describes processes using the smelting apparatus for producing ferrous and non-ferrous minerals from a metallic ore. 1. A smelting apparatus for smelting metallic ore , the smelting apparatus comprising a cylindrical furnace having:a continuous curved wall with a longer axis along a horizontal direction, andend walls joining the continuous curved wall and thereby defining a longitudinal volume in the horizontal direction, the continuous curved wall having a lowermost area, wherein the longitudinal volume is divided in at least three longitudinal layers comprising a top layer within which gasified fuel is combusted for creating a hot gas composition at a temperature sufficient to release, from the metallic ore, at least molten metal and slag, a lowermost layer at the lowermost area for holding molten metal, and a mid-layer above the lowermost layer in which the slag accumulates.2. The smelting apparatus of claim 1 , further comprising a raw material inlet within the continuous curved wall in fluid communication with the top layer for supplying the metallic ore to the furnace claim 1 , and a combustion air inlet within the continuous curved wall in fluid communication with the top layer for providing air for inducing combustion in the furnace.3. The ...

Methods for utilizing olefin coke in a steel making process and products made therefrom

Disclosed herein are methods and compositions for producing reduced carbon footprint steel compositions comprising providing a molten steel having a carbon content; and introducing a carbon containing agent into the molten steel; wherein at least a portion of the carbon containing agent comprises a reclaimed olefin coke.

BLAST FURNACE INSTALLATION

This blast furnace installation is configured such that when pulverized coal, which has been prepared by pulverizing high-grade coal, is pneumatically conveyed into a supply tank by a combustion gas, pulverized coal, which has been prepared by drying, dry-distilling, cooling, and pulverizing low-grade coal with a drying device, a dry-distillation device, a cooling device, and a pulverization device, is supplied from a storage tank by a feeder and pneumatically conveyed into the supply tank by a nitrogen gas, and then the pulverized coals in the supply tank are pneumatically conveyed from a supply line into an injection lance by a carrier gas, a control unit controls the feeders so as to gradually increase the supply amount of pulverized coal while maintaining the total amount of supply amount of pulverized coal and supply amount of pulverized coal to be supplied to the tuyere at a prescribed amount. 1. A blast furnace installation comprising:a blast furnace body;starting material charging means for charging a starting material from a top into an interior of the blast furnace body;hot air blowing means for blowing hot air into the blast furnace body from a tuyere; andpulverized coal supply means for supplying pulverized coal into the blast furnace body through the tuyere; whereinthe pulverized coal supply means includes:moisture removal means for high-grade coal for evaporating moisture in high-grade coal;pulverization means for high-grade coal for pulverizing the high-grade coal, moisture in the high-grade coal having been removed by the moisture removal means for high-grade coal, to provide pulverized coal;moisture removal means for low-grade coal for evaporating moisture in low-grade coal;pyrolysis means for pyrolyzing the low-grade coal, moisture in the low-grade coal having been removed by the moisture removal means for low-grade coal;cooling means for cooling the low-grade coal, the low-grade coal having been pyrolyzed by the pyrolysis means;pulverization means ...

Method for preparation of ammonia gas and co2 for a urea synthesis process

The invention relates to a process for preparing ammonia gas and CO 2 for urea synthesis. In the process of the invention, a process gas containing nitrogen, hydrogen and carbon dioxide as main components is produced from a metallurgical gas. The metallurgical gas consists of blast furnace gas, or contains blast furnace gas at least as a mixing component. The process gas is fractionated to give a gas stream containing the CO 2 component and a gas mixture consisting primarily of N 2 and H 2 . An ammonia gas suitable for the urea synthesis is produced from the gas mixture by means of ammonia synthesis. CO 2 is branched off from the CO 2 -containing gas stream in a purity and amount suitable for the urea synthesis.

SURFACE DETECTION APPARATUS OF BLAST FURNACE BURDEN AND DETECTION METHOD

An apparatus includes: a guide portion in which a reflection plate is disposed in an opening portion at one end, and an antenna is disposed at the other end, and which is to be inserted into a blast furnace through an opening of the furnace; a guide portion moving unit which moves the guide portion to the inside or outside of the furnace; a guide portion rotating unit which rotates the guide portion; and a reflection plate tilting unit which changes a tilt angle of the reflection plate with respect to the antenna. During measurement, the opening portion of the guide portion is protruded into the furnace, and the guide portion rotating unit and the reflection plate tilting unit are driven to scan planarly or linearly the surface of a burden in the furnace. 1. A surface detection apparatus of a blast furnace burden , the surface detection apparatus which is configured to transmit a detection wave to a surface of a burden such as iron ore and coke that are charged into a blast furnace , and to receive a reflection wave of the detection wave , thereby detecting a surface profile of the burden , comprising:a guide portion which is cylindrical, and which has an opening portion that is formed by removing a part of a peripheral wall of one end of the guide portion;a reflection plate which is disposed directly above the opening portion;an antenna which is disposed at another end of the guide portion while being opposed to the reflection plate;a guide portion rotating unit which is configured to rotate the guide portion through a predetermined angle about an axis of the guide portion;a guide portion moving unit which is configured to move the guide portion to an inside or outside of the blast furnace; anda reflection plate tilting unit which is configured to tilt the reflection plate at a predetermined angle to an antenna side or an anti-antenna side, whereinthe guide portion is inserted through an opening of the blast furnace while disposing the opening portion on a side of ...

Plant complex for producing steel and a method for operating the plant complex

A plant complex for producing steel, having a blast furnace for producing pig iron; a converter steel works for producing crude steel; a gas pipeline system for gases that occur in the production of pig iron and/or the production of crude steel; a chemical plant and/or a biotechnology plant which are/is connected to the gas pipeline system, wherein the plant complex additionally includes a biogas plant which is connected to the gas pipeline system.

SUSTAINABLE PROCESS FOR THE CO-GENERATION OF PIG IRON AND ELECTRIC ENERGY USING WOOD AS FUEL

An integrated and sustainable process is presented for the co-generation of pig iron and electric energy in a blast furnace installation in which dried wood replaces charcoal as the fuel, as the reducing and as the carburizing agent. Furthermore, this application incorporates the process—until now independent—of transforming wood into coal, inside the blast furnace. 1. A sustainable joint smelting and energy producing process where wood is used as the only fuel , reducing agent and carburizing agent and where all the wood used is put inside the blast furnace.2. The process of claim 1 , where various additional plant facilities may be included claim 1 , such as for example—but not only—a steel mill or a wood drying plant claim 1 , that use—partially or totally—the surplus energy from the smelting plant.3. A sustainable smelting process according to where wood is used as the only fuel claim 1 , reducing agent and carburizing agent and where all the wood used (being it the only fuel claim 1 , reducing agent and carburizing agent) is put inside the blast furnace.4. A sustainable joint smelting-energy producing process where wood is used as the only fuel claim 1 , reducing agent and carburizing agent claim 1 , and where the excess energy produced is an indirect function of the % fixed carbon content of the dry wood.5. A sustainable smelting process where wood is used as the only source of both carbon and energy62. A sustainable joint smelting-energy producing process whose flow-sheet is substantially similar claim 1 , from the conceptual point of view—in all or some of its tables/equations—to the one depicted in and/or claim 1 , and/or where the quantitative and qualitative relations (ratios) are substantially as shown in the tables and equations shown.7. A sustainable smelting process where wood is the only fuel claim 1 , reducing agent and carburizing agent claim 1 , and where only part of the wood is put inside the blast furnace.8. A sustainable co-generation process ...

METHOD AND DEVICE FOR MANUFACTURING GRANULATES

A method and a device for producing granulates () which are obtained by the method steps: intensively mixing raw materials () and optionally additives () by adding water () to form a mixture (); introducing the mixture () and optional additives () into a granulator (); granulating the mixture () by adding water () to form raw granulates (); introducing the raw granulates (), water () and optional additives () into a rolling drum () and rolling the raw granulates () to form the granulates (). 1. A method for manufacturing granulates comprising:a first step comprised of intensively mixing iron ore and/or fine iron ore concentrates, raw materials, and the optional admixtures while adding water, to produce a mixture in an intensive mixer;a second method step, comprised of introducing the mixture and the optional admixtures into a granulator and granulating the mixture and the optional admixtures, while adding water, to produce raw granulates; anda third method step comprised of introducing the raw granulates, water, and the optional admixtures and/or coke fines, into a rolling drum and rolling the raw granulates.2. The method as claimed in claim 1 , further comprising performing the intensive mixing of the mixture in the intensive mixer for at least 30 seconds claim 1 , and for a maximum of 90 seconds.3. The method as claimed in claim 1 , further comprising performing the granulation of the mixture in the granulator for at least 50 seconds claim 1 , and for a maximum of 120 seconds.4. The method as claimed in claim 1 , further comprising providing the water content of the mixture to have a lower limit of 3 percent by mass claim 1 , and an upper limit of 9 percent by mass claim 1 , relative to the total mass of the mixture.5. A device for performing the method according to claim 1 , wherein the device comprises:an intensive mixer configured for intensively mixing iron ore and/or fine iron ore concentrates and other raw materials and added water for producing a mixture;a ...

PULVERIZED-COAL INJECTION DEVICE, BLAST FURNACE FACILITY PROVIDED WITH THE SAME, AND PULVERIZED-COAL SUPPLYING METHOD

A pulverized-coal injection device is configured so as to inject pulverized coal from a tuyere of a blast-furnace main unit) together with heated, compressed injection air, and upgraded coal that has a self-heating property and that is upgraded from low-grade coal is used as a raw material for the pulverized coal. In addition, a heat exchanger is provided as a heat transporting unit for transporting heat due to a self-heating effect of this upgraded coal to a site requiring heat. This heat exchanger heats intake air by using the heat due to the self-heating effect of the upgraded coal that passes through the pulverized-coal supplying pipe to perform heat exchange with, for example, air that is taken into an injection-air feeding device. Furthermore, a deactivating unit for deactivating the upgraded coal such that a predetermined level of the self-heating effect thereof is retained may be provided. 1. A pulverized-coal injection device configured so as to inject pulverized coal from a tuyere of a blast-furnace main unit together with heated , compressed injection air ,wherein upgraded coal that has a self-heating property and that is upgraded from low-grade coal is used as a raw material for the pulverized coal.2. A pulverized-coal injection device according to claim 1 , comprising:a heat transporting unit for transporting heat due to a self-heating effect of the upgraded coal to a site requiring heat.3. A pulverized-coal injection device according to claim 2 , wherein the heat transporting unit is configured so as to subject the injection air claim 2 , before being compressed claim 2 , to heat exchange with the upgraded coal.4. A pulverized-coal injection device according to claim 2 , wherein the heat transporting unit is configured so as to transport the heat of the upgraded coal to a upgrading device that upgrades the low-grade coal.5. A pulverized-coal injection device according to claim 1 , further comprising:a deactivating unit for deactivating the upgraded ...

STARTING A SMELTING PROCESS

A method of starting a molten-bath based melting process includes establishing a sufficiently large and stable “hot zone” for ignition of oxygen and coal in a main chamber of a smelting vessel by independent means, i.e. independently of and before supplying cold oxygen and coal into the main chamber. 1. A method of starting a molten-bath based process for smelting a metalliferous feed material to form a molten metal in a smelting apparatus , with the apparatus including a smelting vessel that includes a main chamber that contains a bath of molten metal , and with the method including the steps of:(a) inserting an external ignition source into the main chamber of the smelting vessel to form a hot zone in the main chamber;(b) commencing supplying a cold oxygen-containing gas into the main chamber and igniting combustible material in the main chamber,(c) commencing supplying a carbonaceous material into the main chamber and increasing the temperature in the main chamber and melting frozen materials in the main chamber, and(d) commencing supplying metalliferous material into the main chamber and smelting the metalliferous material and producing molten metal in the main chamber.2. The method defined in includes supplying a combustible material to the main chamber prior to step (a) of inserting the external ignition source into the main chamber.3. The method defined in includes supplying the combustible material into the main chamber by manually inserting the combustible material through an opening in the main chamber.4. The method defined in includes supplying a combustible material to the main chamber after step (a) of inserting the external ignition source into the main chamber and prior to step (b) of commencing supplying the cold oxygen-containing gas into the main chamber and igniting the combustible material in the main chamber.5. The method defined in includes commencing supplying slag or slag forming materials into the main chamber and forming a slag on the ...

SURFACE PROFILE DETECTION APPARATUS OF BURDEN IN BLAST FURNACE AND OPERATION METHOD

Provided is a surface profile detection apparatus of a burden in a blast furnace having a simple apparatus configuration and capable of detecting a deposited state of the burden while a shooter is turning and enabling an operation close to a theoretical deposition profile. The surface profile detection apparatus of a burden in a blast furnace includes a rotating plate mounted immediately above an opening part of the blast furnace and configured to rotate about an opening center of the opening part as a central axis, a rotating means for rotating the rotating plate, and a transmission and reception means for transmitting a detection wave such as a microwave or a millimeter wave in a linear shape along a diametrical direction of the rotating plate and receiving the detection wave. The surface profile detection apparatus performs transmission and reception in a direction orthogonal to a rotating direction of the rotating plate while rotating the rotating plate in synchronization with turning of the shooter so that transmission of the detection wave is not interrupted. 1. A surface profile detection apparatus of a burden in a blast furnace ,wherein the surface profile detection apparatus is configured to detect a surface profile of the burden such as iron ore, coke, limestone and the like in the blast furnace, to which the burden is supplied by a shooter, by transmitting a detection wave toward a surface of the burden deposited in the furnace and receiving the detection wave reflected on the surface of the burden, through an opening part of the blast furnace,wherein the surface profile detection apparatus comprises:a rotating plate mounted immediately above the opening part and configured to rotate about an opening center of the opening part as a central axis;a rotating means for rotating the rotating plate; anda transmission and reception means for transmitting the detection wave in a linear shape along a diametrical direction of the rotating plate and receiving the ...

SLAG REMOVAL DEVICE AND SLAG REMOVAL METHOD

Provided is a slag removal device for a blast furnace, capable of readily and reliably achieving slag removal using a simple device configuration, even when pulverized coal is used that has not had the softening temperature thereof adjusted, and capable of reducing as much as possible the risk of pipe damage, etc. The slag removal device for a blow pipe is provided in a blow pipe that injects auxiliary fuel pulverized coal together with hot air from a tuyere for a blast furnace main body that produces pig iron from iron ore. A jet nozzle that injects solids having a higher fusion point than the temperature in the vicinity of the tuyere and having a particle diameter greater than that of the pulverized coal, into pulverized coal that flows inside the blow pipe and into the hot air, is provided in the slag removal device. 1. A slag removal device for a blow pipe which is provided in a blow pipe that injects pulverized coal as an auxiliary fuel along with hot air through a tuyere into a blast furnace main body that produces pig iron from iron ore , with slag of the pulverized coal including a component that melts as a result of the hot air and/or combustion heat of the pulverized coal , the device comprising:a jet nozzle that injects solids having a higher melting point than a temperature in the vicinity of the tuyere and having a particle diameter greater than that of the pulverized coal, into the pulverized coal that flows in the blow pipe and into the hot air, the jet nozzle being provided with a solids supply system that supplies the solids and has provided therein an open/close control valve.2. The slag removal device according to claim 1 , further comprising: a swirling flow forming section that generates a swirling flow in a flow of the hot air at a position on an upstream side of an injection lance that injects the pulverized coal in an interior of the blow pipe.3. The slag removal device according to claim 1 , further comprising: a jet nozzle that ejects a ...

METHOD FOR BLOWING SUBSTITUTE REDUCING AGENTS INTO A BLAST FURNACE

The present invention relates to a method for pneumatically blowing a powdery substitute reducing agent in a dense flow process, by means of a transport gas, into a gasification reactor, or via a tuyere into a blast furnace. The substitute reducing agent is gasified in a gasification reaction. The transport gas comprises a fuel gas, the constituents of which or the oxidation constituents of which are at least partly involved in the gasification reaction. 117-. (canceled)18. A method for pneumatically blowing a powdery substitute reducing agent in a dense flow process , in which a flow density of the powdery substitute reducing agent is 60% or more of the packing density in the bulk state , by means of a transport gas , into a reactor or via a tuyere into a blast furnace , so that the substitute reducing agent is gasified in a gasification reaction ,wherein the transport gas comprises a fuel gas, which is carbon monoxide, hydrogen, water vapor, oxygen, hydrocarbon, furnace gas, natural gas, coke gas, converter gas, another blast furnace gas, or a mixture thereof.19. A method for pneumatically blowing a powdery substitute reducing agent in a dense flow process , in which a flow density of the powdery substitute reducing agent is 60% or more of the packing density in the bulk state , by means of a transport gas , into a reactor , or via a tuyere into a blast furnace , so that the substitute reducing agent is gasified in a gasification reaction ,wherein the transport gas consists of a fuel gas, the components of which or their oxidation components at least partially participate in the gasification reaction, and of another gas or gas mixture than the fuel gas.20. A method according to claim 18 , wherein the transport gas consists to at least 2 w. % claim 18 , preferably at least 5 w. % claim 18 , preferably at least 10 w. % of the fuel gas claim 18 , andwherein the transport gas in particular consists to maximum 90 w. %, preferably maximum 50 w. %, further preferably ...

BLOW PIPE STRUCTURE

Provided is a blow-pipe structure for a blast furnace facility configured so as to be capable of suppressing slag adhesion by using a simple structure, even if pulverized coal with an unadjusted softening temperature is used. The blow-pipe structure is attached to a tuyere for a blast furnace main body that produces pig iron from iron ore, said blow-pipe structure injecting auxiliary fuel pulverized coal together with hot air, and slag from the pulverized coal containing a component that is melted by the hot air and/or heat from combustion of the pulverized coal. A resisting element that increases flowpath resistance on the pipe inside wall surface side and concentrates the flows of the hot air and the pulverized coal to the flowpath axis center is provided on the downstream side of an injection lance that inserts pulverized coal into the blow pipe. 1. A blow-pipe structure attached to a tuyere of a blast furnace main body for producing pig iron from iron ore , the blow-pipe structure injecting pulverized coal as an auxiliary fuel together with hot air , and slag from the pulverized coal containing a component that is melted by the hot air and/or heat from combustion of the pulverized coal , the blow-pipe structure comprising:a resisting element provided on a downstream side of an injection lance for introducing the pulverized coal into a blow pipe, the resisting element increasing flowpath resistance on a side of a pipe inner wall and concentrating a flow of the hot air and pulverized coal to a flowpath axis center.2. The blow-pipe structure according to claim 1 , wherein the resisting element is a plurality of block elements projecting from the inner wall; andthe block elements project further toward the flowpath axis center than an outlet port of the tuyere and are disposed so as to collectively cover an entire circumference of the pipe inner wall as viewed from the outlet port.3. The blow-pipe structure according to claim 1 , wherein the resisting element is one ...

HIGH-CARBON BIOGENIC REAGENTS AND USES THEREOF

This invention provides processes and systems for converting biomass into high-carbon biogenic reagents that are suitable for a variety of commercial applications. Some embodiments employ pyrolysis in the presence of an inert gas to generate hot pyrolyzed solids, condensable vapors, and non-condensable gases, followed by separation of vapors and gases, and cooling of the hot pyrolyzed solids in the presence of the inert gas. Additives may be introduced during processing or combined with the reagent, or both. The biogenic reagent may include at least 70 wt %, 80 wt %, 90 wt %, 95 wt %, or more total carbon on a dry basis. The biogenic reagent may have an energy content of at least 12,000 Btu/lb, 13,000 Btu/lb, 14,000 Btu/lb, or 14,500 Btu/lb on a dry basis. The biogenic reagent may be formed into fine powders, or structural objects. The structural objects may have a structure and/or strength that derive from the feedstock, heat rate, and additives. 1. A biogenic blast furnace addition composition comprising:at least about 55 wt % total carbon;at most 5 wt % hydrogen;at most 1 wt % nitrogen;at most 0.5 wt % phosphorus;at most 0.2 wt % sulfur; andan additive selected from a metal, a metal oxide, a metal hydroxide, a metal halide, an acid or a salt thereof, a base or a salt thereof, or a combination thereof.2. The biogenic blast furnace addition composition of further comprising at least about 2 wt % to at most about 15 wt % dolomite claim 1 , at least about 2 wt % to at most about 15 wt % dolomitic lime claim 1 , at least about 2 wt % to at most about 15 wt % bentonite claim 1 , or at least about 2 wt % to at most about 15 wt % calcium oxide.3. The biogenic blast furnace addition composition of further comprising at least about 85 wt % total carbon claim 1 , about 0.6 wt % sulfur claim 1 , at most about 1.5 wt % volatile matter claim 1 , at most about 13 wt % ash claim 1 , at most about 8 wt % moisture claim 1 , about 0.035 wt % phosphorus claim 1 , a CRI value of ...

Composite Particle For Steel Making and Ore Refining

Composite particles are used in combination with ore particles in an ore-refining or purification process, such as in a steel- or iron-making process. The composite particles comprise a core, which may be an aggregate of limestone, dolomite, or another ore particle. The core is surrounded by a coating layer of a metal dust and a binder. The metal dust may be iron oxide dust, which, along with limestone, is prevalent in the iron smelting process anyway. In this way, the composite particles help to recycle otherwise wasted and hazardous iron dust. The binder may be mineral clay such as bentonite, montmorillonite or kaolinite, and may comprise about 2-10% by weight of the particle. 1. A composite particle comprising:a core comprising an aggregate of limestone, dolomite, or taconite;a coating on the core, the coating comprising a metal dust and a binder material.2. The composite particle of claim 1 , wherein the binder material is selected from Phyllosilicates.3. The composite particle of claim 2 , wherein the binder material is selected from the kaolinite claim 2 , montmorillonite/smectite/bentonite claim 2 , palygorskite/attapulgite claim 2 , vermiculite claim 2 , and minnesotaite.4. The composite particle of claim 1 , wherein the binder material is present in an amount from about 2% to about 10% by weight of the composite particle.5. The composite particle of claim 4 , wherein the binder material is present at example about 5%.6. The composite particle of claim 1 , wherein the metal dust comprises iron oxide dust.7. The composite particle of claim 1 , wherein the core aggregate comprises from about 30 to about 90% by weight of the composite particle.8. The composite particle of claim 1 , wherein the core is an aggregate sized to a standard size number from about 7-9.9. The composite particle of claim 6 , wherein the iron oxide dust is present in an amount from about 20% to about 60% by weight of the composite particle.10. The composite particle of claim 9 , wherein ...

METHOD FOR OPERATING BLAST FURNACE AND METHOD FOR PRODUCING MOLTEN PIG IRON

Provided is a blast-furnace operating method including: a first step of adjusting a charging rate of coke while monitoring a furnace-top temperature T; a second step of adjusting an injection rate of pulverized coal while monitoring an in-furnace superficial gas velocity u and the furnace-top temperature T; a third step of adjusting an oxygen-enrichment ratio of oxygen-enriched air while monitoring a tuyere combustion temperature Tand the furnace-top temperature T; and a fourth step of determining whether an injection rate of the oxygen-enriched air needs to be adjusted, based on a value of the in-furnace superficial gas velocity u. 1. A blast-furnace operating method in which iron-oxide raw material is reduced to obtain molten pig iron by charging the iron-oxide raw material , coke , and partially reduced iron from the furnace top of a blast furnace , and also injecting pulverized coal and oxygen-enriched air from a tuyere of the blast furnace , the blast-furnace operating method comprising:{'sub': 'top', 'a first step of adjusting a charging rate of the coke while monitoring a furnace-top temperature T;'}{'sub': 'top', 'a second step of adjusting an injection rate of the pulverized coal while monitoring an in-furnace superficial gas velocity u and the furnace-top temperature T;'}{'sub': f', 'top, 'a third step of adjusting an oxygen-enrichment ratio of the oxygen-enriched air while monitoring a combustion temperature Tat the tuyere and the furnace-top temperature T; and'}a fourth step of determining whether an injection rate of the oxygen-enriched air needs to be adjusted, based on a value of the in-furnace superficial gas velocity u.2. The blast-furnace operating method according to claim 1 , wherein{'sub': 'top', 'claim-text': {'br': None, 'i': T', '≧T, 'sub': top', 'topmin, '(1)'}, 'when the charging rate of the partially reduced iron is increased, at the first step, the charging rate of the coke is decreased within a range where the furnace-top temperature ...

BLOW-PIPE STRUCTURE

Provided is a blow-pipe structure for a blast furnace facility configured so as to be capable of suppressing slag adhesion by using a simple structure, even if pulverized coal with an unadjusted softening temperature is used. The blow-pipe structure is attached to a tuyere in a blast furnace main body that produces pig iron from iron ore. The blow-pipe structure injects auxiliary fuel pulverized coal together with hot air and slag from the pulverized coal containing a component that is melted by the hot air and/or heat from the combustion of the pulverized coal combustion heat. The blow-pipe structure has an internal/external double pipe structure having an internal pipe that continues from a header pipe that supplies the hot air, to the vicinity of the tuyere and opens, said internal pipe being provided inside an external pipe that continues from the header pipe to the tuyere. 1. A blow-pipe structure attached to a tuyere for a main blast furnace body that produces pig iron from iron ore , the blow-pipe structure injecting pulverized coal as an auxiliary fuel along with hot air , slag from the pulverized coal containing a component that is melted by the hot air and/or heat from the combustion of the pulverized coal combustion heat;the structure being an internal/external double pipe structure in which an internal pipe that continues from a header pipe, which supplies the hot air, to the vicinity of a tuyere and opens is provided inside an external pipe that continues from the header pipe to the tuyere, and a pulverized coal outlet of an injection lance for introducing the pulverized coal opens to the interior of the internal pipe.2. The blow-pipe structure according to claim 1 , wherein a flow path resisting element is provided at a position in a flow path formed between the external pipe and the internal pipe and near the outlet of the internal pipe.3. The blow-pipe structure according to claim 1 , wherein a nitrogen injection pipe for supplying nitrogen to the ...

METHOD AND DEVICE FOR OPERATING A SMELTING REDUCTION PROCESS

In a method and a device for operating a smelting reduction process, at least part of an export gas from a blast furnace or a reduction unit is thermally utilized in a gas turbine and the exhaust gas of this gas turbine is used in a waste heat steam generator to generate steam. The remaining part of the export gas is fed to a COseparation apparatus, the tail gas thereby obtained being fed to a waste heat steam generator and burned for additional steam generation. The combustible components of the tail gas are sent for thermal utilization in a steam generator, so that the overall energy balance of the thermal use of the export gas is improved. In addition, a further part of the export gas is qualitatively improved by the COseparation apparatus, so as to generate a high-quality reduction gas which can be supplied for metallurgical use. 1. An apparatus for operating a melt reduction process , comprising:a blast furnace or a melting assembly,at least one reduction assembly, wherein batch materials being reducible by means of a reduction gas, using carbon carriers and, if appropriate, aggregates, and being meltable into pig iron or steel semifinished products, and the reacted reduction gas being divertible as top gas and, purified, if appropriate mixed with purified and cooled excess gas from the melting assembly, being dischargeable as export gas,a gas turbine with a generator for the thermal reaction of at least part of the export gas,a waste heat steam generation, in which steam can be generated by means of the hot exhaust gases from the gas turbine,{'sub': 2', '2, 'a device for the separation of CO, to which at least part of the remaining export gas can be supplied, so as to form a gas purified of COand a tail gas, and'}a storage device for the absorption and compensation of calorific value fluctuations in the tail gas, the storage device being connected to the waste heat steam generation which has a heating device for the combustion of the tail gas in order to form ...

Compositions and Methods for Purification of Metals from Steel Making Waste Streams

Systems and methods are described in which spent pickle liquor from metal cleaning processes is utilized to regenerate a lixiviant used to recover valuable metals from industrial waste and other sources. The spent pickle liquor is neutralized and solvated metals in the spent pickle liquor are precipitated in this process. When the industrial waste is slag from a metal refining process a partially closed metal production process can be implemented, where spent pickle liquor from cleaning of the refined metal is used to regenerate a lixiviant used to recover a different, valuable metal from a waste slag of the process, with precipitated salts from the lixiviant regeneration being returned as a raw material in the metal refining process. As a result waste streams from these processes are dramatically reduced or eliminated. 124-. (canceled)25. A method for processing a spent pickle liquor , comprising:{'sub': '2', 'obtaining an industrial waste comprising CaO or Ca(OH);'}contacting the industrial waste with a lixiviant to solvate calcium from the industrial waste as a water soluble calcium salt, thereby generating a calcium-depleted industrial waste and a spent lixiviant; andcontacting the spent lixiviant with the spent pickle liquor, wherein the spent pickle liquor comprises a water soluble salt of a metal, to produce a suspension comprising a regenerated lixiviant and an insoluble salt of the metal.26. The method of claim 25 , further comprising the step of separating the insoluble salt of the metal from the regenerated lixiviant.27. The method of claim 26 , further comprising the step of recycling the regenerated lixiviant to contact additional industrial waste.28. The method of claim 25 , further comprising the step of recovering calcium from the water soluble calcium salt.28. The method of claim 25 , wherein the water soluble salt of the metal comprises a counterion claim 25 , and wherein the counterion is selected to provide the water soluble calcium salt when ...

HIGH-CARBON BIOGENIC REAGENTS AND USES THEREOF

This invention provides processes and systems for converting biomass into high-carbon biogenic reagents that are suitable for a variety of commercial applications. Some embodiments employ pyrolysis in the presence of an inert gas to generate hot pyrolyzed solids, condensable vapors, and non-condensable gases, followed by separation of vapors and gases, and cooling of the hot pyrolyzed solids in the presence of the inert gas. Additives may be introduced during processing or combined with the reagent, or both. The biogenic reagent may include at least 70 wt %, 80 wt %, 90 wt %, 95 wt %, or more total carbon on a dry basis. The biogenic reagent may have an energy content of at least 12,000 Btu/lb, 13,000 Btu/lb, 14,000 Btu/lb, or 14,500 Btu/lb on a dry basis. The biogenic reagent may be formed into fine powders, or structural objects. The structural objects may have a structure and/or strength that derive from the feedstock, heat rate, and additives. 1. A biogenic syngas-generating feedstock comprising , on a dry basis:at least about 55 wt % total carbon;at most about 5 wt % hydrogen;at most about 1 wt % nitrogen;at most about 0.5 wt % phosphorus;at most about 0.2 wt % sulfur; andan additive selected from a metal, a metal oxide, a metal hydroxide, a metal halide, or a combination thereof.2. The biogenic syngas-generating feedstock of claim 1 , wherein the additive is selected from magnesium claim 1 , manganese claim 1 , aluminum claim 1 , nickel claim 1 , chromium claim 1 , silicon claim 1 , boron claim 1 , cerium claim 1 , molybdenum claim 1 , phosphorus claim 1 , tungsten claim 1 , vanadium claim 1 , iron halide claim 1 , iron chloride claim 1 , iron bromide claim 1 , magnesium oxide claim 1 , dolomite claim 1 , dolomitic lime claim 1 , fluorite claim 1 , fluorospar claim 1 , bentonite claim 1 , calcium oxide claim 1 , lime claim 1 , or a combination thereof.3. The biogenic syngas-generating feedstock of claim 1 , wherein the biogenic syngas-generating feedstock ...

SLAG REMOVAL DEVICE

Provided is a slag removal device for a blow pipe, that reduces the risk of pipe breakage, etc., and is capable of achieving easy and reliable slag removal using a simple device configuration. The slag removal device comprises a blow pipe () that injects auxiliary fuel pulverized coal, together with hot air, from a tuyere () for a blast furnace main body () that produces pig iron from iron ore. The slag removal device for a blow pipe including a component that melts on to the pulverized coal slag as a result of the hot air and/or the combustion heat of the pulverized coal comprises a fluid jet nozzle () that sprays fluid towards a slag adhesion area inside the blow pipe (). 1. A slag removal device for a blow pipe for injecting pulverized coal as an auxiliary fuel together with hot air from a tuyere of a blast furnace main body for producing pig iron from iron ore , by which slag from the pulverized coal containing a component that is melted by the hot air and/or heat from combustion of the pulverized coal is removed , comprising a fluid jet nozzle for spraying fluid towards a slag adhesion area within the blow pipe.2. The slag removal device according to claim 1 , wherein the fluid is a combustible fluid.3. The slag removal device according to claim 1 , wherein the fluid jet nozzle includes a fluid supply system for supplying the fluid claim 1 , the fluid supply system including an opening/closing control valve claim 1 , and slag detection means for detecting a state of slag within the slag adhesion area; wherein the opening/closing control valve is opened and the fluid is sprayed upon a slag adhesion level detected by the slag detection means being determined to be at or above a slag removal threshold value claim 1 , and the opening/closing control valve is closed and spraying of the fluid is stopped upon the slag adhesion level detected by the slag detection means being less than a slag removal stop threshold value.4. The slag removal device according to claim 3 ...