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05-01-2012 дата публикации

Platinum Group Metal Recovery From Powdery Waste

Номер: US20120000832A1
Автор: Angela Janet Murray
Принадлежит: Individual

The invention relates to a method for increasing the concentration of platinum group metals in urban waste material. The method comprises obtaining particles of urban waste material; screening the particles of urban waste material by size, selecting particles of urban waste material that lie within a defined size range; and processing the selected particles using at least one physical or chemical technique whereby to increase the concentration of platinum group metals to at least 5 ppm. The invention also relates to an apparatus for increasing the concentration of platinum group metals in particulate urban waste material. The apparatus comprises: a drying unit ( 4 ), a particle size screening unit ( 5 ); and one or more processing units for effecting platinum group metal concentration of the particulate urban waste material by physical and/or chemical techniques, in particular a magnetic separation unit ( 7 ) and a froth flotation cell ( 9 ).

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Номер записи: 1
16-11-1999 дата публикации

АППАРАТ ДЛЯ ИНТЕНСИВНОГО ЦИАНИРОВАНИЯ

Номер: RU0000011792U1
Автор: Машурьян В.Н., Царев В.В.
Принадлежит: Тульское государственное научно-исследовательское геологическое предприятие

1. Аппарат для интенсивного цианирования, содержащий вертикальный корпус, пневмоподающую трубу, воздушный коллектор, перемешивающее устройство, отличающийся тем, что он выполнен в виде прямоточной камеры, снабженной в нижней части фурмами с эжекторными насадками по обе ее стороны, в верхней части камера снабжена наклонными циклонами и сферой, имеющей радиус, равный двукратной ширине камеры, опирающейся на боковые поверхности циклонов, имеющих диаметр, равный ширине камеры, расположенных снаружи по обе стороны камеры под углом 15 ниже горизонта, имеющих на боковой поверхности со стороны камеры отверстия, расположенные по винтовой линии с шагом, равным половине диаметра циклона на расстоянии половины его длины, причем циклоны снабжены коллекторами возврата пульпы и каплеуловителями и соединены с вертикальными циклонами, расположенными со стороны выходных отверстий наклонных циклонов, также имеющих каплеуловители и коллекторы возврата пульпы. 2. Аппарат для интенсивного цианирования по п.1, отличающийся тем, что коллекторы возврата пульпы установлены в нижней части циклонов и снабжены одним или несколькими патрубками, соединяющими циклоны с нижней частью камеры в области всасывающего патрубка эжектора фурм. (19) RU (11) 11 792 (13) U1 (51) МПК C22B 3/02 (1995.01) C22B 11/12 (1995.01) C22B 11/08 (1995.01) РОССИЙСКОЕ АГЕНТСТВО ПО ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К СВИДЕТЕЛЬСТВУ (21), (22) Заявка: 99107040/20, 05.04.1999 (24) Дата начала отсчета срока действия патента: 05.04.1999 (46) Опубликовано: 16.11.1999 (72) Автор(ы): Машурьян В.Н., Царев В.В. 1 1 7 9 2 R U (57) Формула полезной модели 1. Аппарат для интенсивного цианирования, содержащий вертикальный корпус, пневмоподающую трубу, воздушный коллектор, перемешивающее устройство, отличающийся тем, что он выполнен в виде прямоточной камеры, снабженной в нижней части фурмами с эжекторными насадками по обе ее стороны, в верхней части камера снабжена наклонными циклонами и сферой, имеющей радиус, ...

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Номер записи: 2
10-12-2002 дата публикации

УСТРОЙСТВО ДЛЯ КУПЕЛИРОВАНИЯ СВИНЦОВЫХ СПЛАВОВ

Номер: RU0000026558U1
Автор: Адельшина Н.В., Семенов С.В., Швецов В.А.
Принадлежит: Адельшина Наталья Владимировна, Камчатский государственный технический университет, Семенов Сергей Викторович, Швецов Владимир Алексеевич

Устройство для купелирования свинцовых сплавов, содержащее чашку, выполненную из магнезита, и основание, выполненное из смеси цемента с порошкообразными оксидами, отличающееся тем, что оно снабжено контейнером для сбора оксида свинца, соединенным с основанием с возможностью перемещения, а отношение диаметра А основания к высоте В соответствует условию 3<А:В<5. (19) RU (11) 26 558 (13) U1 (51) МПК C22B 11/00 (2000.01) РОССИЙСКОЕ АГЕНТСТВО ПО ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К СВИДЕТЕЛЬСТВУ (21), (22) Заявка: 2002112908/20 , 18.05.2002 (24) Дата начала отсчета срока действия патента: 18.05.2002 (46) Опубликовано: 10.12.2002 (72) Автор(ы): Швецов В.А., Адельшина Н.В., Семенов С.В. R U 2 6 5 5 8 (57) Формула полезной модели Устройство для купелирования свинцовых сплавов, содержащее чашку, выполненную из магнезита, и основание, выполненное из смеси цемента с порошкообразными оксидами, отличающееся тем, что оно снабжено контейнером для сбора оксида свинца, соединенным с основанием с возможностью перемещения, а отношение диаметра А основания к высоте В соответствует условию 3<А:В<5. Ñòðàíèöà: 1 U 1 U 1 (54) УСТРОЙСТВО ДЛЯ КУПЕЛИРОВАНИЯ СВИНЦОВЫХ СПЛАВОВ 2 6 5 5 8 (73) Патентообладатель(и): Швецов Владимир Алексеевич, Адельшина Наталья Владимировна, Семенов Сергей Викторович R U Адрес для переписки: 683003, г.Петропавловск-Камчатский, ул. Ключевская, 35, КамчатГТУ (71) Заявитель(и): Камчатский государственный технический университет RU 26 558 U1 RU 26 558 U1 RU 26 558 U1

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Номер записи: 3
10-01-2003 дата публикации

УСТАНОВКА ДЛЯ КУПЕЛИРОВАНИЯ СВИНЦОВЫХ СПЛАВОВ В ПРОБИРНОМ АНАЛИЗЕ

Номер: RU0000027087U1
Автор: Адельшина Н.В., Семенов С.В., Швецов В.А.
Принадлежит: Адельшина Наталья Владимировна, Камчатский государственный технический университет, Семенов Сергей Викторович, Швецов Владимир Алексеевич

Установка для купелирования свинцовых сплавов в пробирном анализе, включающая электропечь, содержащую отверстия в задней стенке, отличающаяся тем, что она снабжена присоединенным с возможностью перемещения вентиляционным устройством, а дверцы электропечи имеют отверстия, снабженные заглушками. (19) RU (11) 27 087 (13) U1 (51) МПК C22B 11/02 (2000.01) РОССИЙСКОЕ АГЕНТСТВО ПО ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К СВИДЕТЕЛЬСТВУ (21), (22) Заявка: 2002116541/20 , 20.06.2002 (24) Дата начала отсчета срока действия патента: 20.06.2002 (46) Опубликовано: 10.01.2003 (72) Автор(ы): Швецов В.А., Адельшина Н.В., Семенов С.В. R U 2 7 0 8 7 (57) Формула полезной модели Установка для купелирования свинцовых сплавов в пробирном анализе, включающая электропечь, содержащую отверстия в задней стенке, отличающаяся тем, что она снабжена присоединенным с возможностью перемещения вентиляционным устройством, а дверцы электропечи имеют отверстия, снабженные заглушками. Ñòðàíèöà: 1 U 1 U 1 (54) УСТАНОВКА ДЛЯ КУПЕЛИРОВАНИЯ СВИНЦОВЫХ СПЛАВОВ В ПРОБИРНОМ АНАЛИЗЕ 2 7 0 8 7 (73) Патентообладатель(и): Швецов Владимир Алексеевич, Адельшина Наталья Владимировна, Семенов Сергей Викторович R U Адрес для переписки: 683003, г. Петропавловск-Камчатский, ул. Ключевская, 35, Камчат ГТУ (71) Заявитель(и): Камчатский государственный технический университет U 1 U 1 2 7 0 8 7 2 7 0 8 7 R U R U Ñòðàíèöà: 2 RU 27 087 U1 RU 27 087 U1 RU 27 087 U1

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Номер записи: 4
27-01-2006 дата публикации

УСТРОЙСТВО ДЛЯ ПРОБИРНОЙ ПЛАВКИ

Номер: RU0000051027U1
Автор: Адельшина Наталья Владимировна, Швецов Владимир Алексеевич
Принадлежит: Богданов Валерий Дмитриевич

Устройство для пробирной плавки, выполненное из смеси огнеупорной глины, шамота и корунда, имеющее внутреннюю полость заданного объема, отличающееся тем, что внутренняя полость выполнена в виде полусферы, объем которой задается по формуле Vn=KVc, где Vn - объем внутренней полости устройства, см; К - коэффициент, учитывающий состав шихты и пробы, равный 1,1-2,0; Vc - объем гомогенной смеси материала пробы и шихты, см. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 51 027 U1 (51) МПК C22B 11/02 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ, ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ (21), (22) Заявка: 2003117905/22, 16.06.2003 (24) Дата начала отсчета срока действия патента: 16.06.2003 (72) Автор(ы): Швецов Владимир Алексеевич (RU), Адельшина Наталья Владимировна (RU) Адрес для переписки: 683003, г.Петропавловск-Камчатский, ул. Ключевская, 35, КамчатГТУ U 1 5 1 0 2 7 R U Ñòðàíèöà: 1 ru CL U 1 Формула полезной модели Устройство для пробирной плавки, выполненное из смеси огнеупорной глины, шамота и корунда, имеющее внутреннюю полость заданного объема, отличающееся тем, что внутренняя полость выполнена в виде полусферы, объем которой задается по формуле Vn=K .Vc, где Vn - объем внутренней полости устройства, см 3; К - коэффициент, учитывающий состав шихты и пробы, равный 1,1-2,0; Vc - объем гомогенной смеси материала пробы и шихты, см 3. 5 1 0 2 7 (54) УСТРОЙСТВО ДЛЯ ПРОБИРНОЙ ПЛАВКИ R U (73) Патентообладатель(и): Богданов Валерий Дмитриевич (RU) (45) Опубликовано: 27.01.2006 RU 5 10 15 20 25 30 35 40 45 50 51 027 U1 Устройство для пробирной плавки относится к области аналитической химии и может быть использовано при определении благородных металлов в природных и промышленных материалах. Известен тигель для пробирной плавки [1, С.186], выполненный из смеси огнеупорной глины и шамота, имеющий внутреннюю полость, выполненную в виде конуса, объем которой задается в зависимости от массы навески пробы. Данное устройство имеет следующие ...

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Номер записи: 5
10-08-2006 дата публикации

ОПЫТНО-ПРОМЫШЛЕННАЯ УСТАНОВКА ДЛЯ ПЕРЕРАБОТКИ ЗОЛОТОСОДЕРЖАЩИХ РУД И КОНЦЕНТРАТОВ (ВАРИАНТЫ)

Номер: RU0000055367U1
Автор: Битаров Мираби Александрович, Должиков Александр Васильевич, Иванов Дмитрий Николаевич, Малыхин Евгений Васильевич, Совмен Владимир Кушукович
Принадлежит: Закрытое акционерное общество "Золотодобывающая компания "Полюс"

1. Опытно-промышленная установка для переработки золотосодержащих руд и концентратов, включающая последовательно и/или параллельно установленные по ходу технологического процесса и связанные между собой транспортными средствами модуль измельчения руды, модуль флотационного обогащения продуктов измельчения, модуль гравитационного обогащения флотоконцентрата, модуль выщелачивания золота из остаточного концентрата цианидами и модуль извлечения золота из пульп сорбцией, отличающаяся тем, что установка также снабжена модулем сгущения и фильтрации продуктов переработки, модулем доизмельчения гравио- и флотоконцентратов, модулем бактериального окисления концентратов и модулем обезвреживания, при этом модуль измельчения, классификации и гравитационного обогащения руды, установленный в начале линии, средствами перемещения исходных продуктов или продуктов гравитации соединен с модулем флотационного обогащения, а средствами перемещения гравитационного концентрата или промпродукта гравитации соединен с модулем доизмельчения, а модули флотационного обогащения и доизмельчения концентратов, средствами перемещения продуктов переработки, соединены с модулем сгущения и фильтрации, а средствами перемещения хвостов флотации, модуль флотации (в случае отвального содержания в них золота) соединен с модулем обезвреживания, модуль сгущения и фильтрации продуктов переработки, в свою очередь, средствами перемещения сгущенных исходных или доизмельченных продуктов соединен с модулем бактериального окисления концентратов, и/или с модулем доизмельчения, и/или с модулем нейтрализации, подщелачивания пульпы, цианирования продуктов, регенерации сорбента, электролиза и плавки катодного осадка, а модуль бактериального окисления концентратов, в свою очередь, соединен средствами перемещения окисленного концентрата с модулем сгущения и фильтрации, а средствами перемещения, продуктов регенерации сорбента, электролиза и плавки катодного осадка, с модулем цианирования подщелачивания пульпы, а последний, ...

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Номер записи: 6
27-05-2009 дата публикации

УСТРОЙСТВО ДЛЯ ИЗВЛЕЧЕНИЯ БЛАГОРОДНЫХ МЕТАЛЛОВ ИЗ ВОДНЫХ РАСТВОРОВ

Номер: RU0000083245U1
Автор: Елисеева Светлана Николаевна, Кондратьев Вениамин Владимирович, Малев Валерий Вениаминович, Погуляйченко Надежда Алексеевна, Толстопятова Елена Геннадьевна
Принадлежит: Федеральное государственное образовательное учреждение высшего профессионального образования Санкт-Петербургский государственный университет

1. Устройство для извлечения благородных металлов из раствора, содержащее корпус электролизера из инертного материала, катод, выполненный из пористого углеродного материала, и анод, отличающееся тем, что катод выполнен мультислойным с нанесенными на каждый слой из пористого углеродного материала проводящего полимера, обладающего свойством восстанавливать ионы благородных металлов, а аноды расположены параллельно катодам на расстоянии от 5 до 10 мм и электрически изолированы от катодов. 2. Устройство по п.1, отличающееся тем, что в электролизер вводят не менее одного элемента, выполненного из пары катод и анод. 3. Устройство по п.1, отличающееся тем, что количество вводимых элементов из пары электродов катод-анод ограничено скоростью процесса, а также размером электролизера. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 83 245 U1 (51) МПК C02F 1/00 (2006.01) C22B 11/12 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ, ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ (21), (22) Заявка: 2008147165/22, 25.11.2008 (24) Дата начала отсчета срока действия патента: 25.11.2008 (45) Опубликовано: 27.05.2009 8 3 2 4 5 R U Формула полезной модели 1. Устройство для извлечения благородных металлов из раствора, содержащее корпус электролизера из инертного материала, катод, выполненный из пористого углеродного материала, и анод, отличающееся тем, что катод выполнен мультислойным с нанесенными на каждый слой из пористого углеродного материала проводящего полимера, обладающего свойством восстанавливать ионы благородных металлов, а аноды расположены параллельно катодам на расстоянии от 5 до 10 мм и электрически изолированы от катодов. 2. Устройство по п.1, отличающееся тем, что в электролизер вводят не менее одного элемента, выполненного из пары катод и анод. 3. Устройство по п.1, отличающееся тем, что количество вводимых элементов из пары электродов катод-анод ограничено скоростью процесса, а также размером электролизера. Ñòðàíèöà: 1 ru CL U 1 U 1 (54) ...

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Номер записи: 7
10-05-2010 дата публикации

УСТАНОВКА ДЛЯ ИЗВЛЕЧЕНИЯ ЗОЛОТА ИЗ ДЫМОВЫХ ГАЗОВ

Номер: RU0000093803U1
Автор: Кузьминых Валерий Михайлович, Курбатов Павел Рудольфович, Лебедев Анатолий Николаевич, Подберезный Валентин Лазаревич, Сорокин Анатолий Петрович
Принадлежит: УЧРЕЖДЕНИЕ РОССИЙСКОЙ АКАДЕМИИ НАУК, АМУРСКИЙ НАУЧНЫЙ ЦЕНТР ДАЛЬНЕВОСТОЧНОГО ОТДЕЛЕНИЯ РОССИЙСКОЙ АКАДЕМИИ НАУК

Установка для извлечения золота из дымовых газов, состоящая из устройств поглощения золота из возгонов, отличающаяся тем, что устройства поглощения представляют собой последовательно соединенные газопроводом конденсаторы с трубами для отвода конденсата в нижней части, с расположением перед первым и между последующими труб Вентури и трубопровода с отводками, подводящего охлаждающую воду последовательно к U-образным трубам конденсаторов, начиная с последнего в цепи, причем каждая труба Вентури конфузором соединена с трубой для подачи водяного пара, а трубы конденсаторов находятся в прямоугольных секциях, образованных перегородками со щелями и расположенными по всей длине конденсаторов. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 93 803 (13) U1 (51) МПК C22B 11/00 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ, ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ (21), (22) Заявка: 2009128131/22, 20.07.2009 (24) Дата начала отсчета срока действия патента: 20.07.2009 (45) Опубликовано: 10.05.2010 9 3 8 0 3 R U Формула полезной модели Установка для извлечения золота из дымовых газов, состоящая из устройств поглощения золота из возгонов, отличающаяся тем, что устройства поглощения представляют собой последовательно соединенные газопроводом конденсаторы с трубами для отвода конденсата в нижней части, с расположением перед первым и между последующими труб Вентури и трубопровода с отводками, подводящего охлаждающую воду последовательно к U-образным трубам конденсаторов, начиная с последнего в цепи, причем каждая труба Вентури конфузором соединена с трубой для подачи водяного пара, а трубы конденсаторов находятся в прямоугольных секциях, образованных перегородками со щелями и расположенными по всей длине конденсаторов. Ñòðàíèöà: 1 ru CL U 1 U 1 (54) УСТАНОВКА ДЛЯ ИЗВЛЕЧЕНИЯ ЗОЛОТА ИЗ ДЫМОВЫХ ГАЗОВ 9 3 8 0 3 (73) Патентообладатель(и): УЧРЕЖДЕНИЕ РОССИЙСКОЙ АКАДЕМИИ НАУК, АМУРСКИЙ НАУЧНЫЙ ЦЕНТР ДАЛЬНЕВОСТОЧНОГО ОТДЕЛЕНИЯ РОССИЙСКОЙ АКАДЕМИИ НАУК (RU) R U ...

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Номер записи: 8
10-10-2012 дата публикации

УСТРОЙСТВО ДЛЯ ИЗВЛЕЧЕНИЯ ЗОЛОТА ИЗ ВОДНОГО РАСТВОРА КОНДЕНСАТА

Номер: RU0000120968U1
Автор: Кузьминых Валерий Михайлович, Лебедев Анатолий Николаевич
Принадлежит: Кузьминых Валерий Михайлович, Лебедев Анатолий Николаевич

Устройство для извлечения золота из водного раствора конденсата, включающее узел очистки конденсата, состоящий из последовательно соединенных трубопроводом трех баков с расположенными между первым баком и вторым баком последовательно насоса и фильтр-пресса, а между вторым баком и третьим баком - насоса и ультрафильтра, причем третий бак связан трубопроводом с расположенными над ним баком с царской водкой, узел сорбции золота, состоящий из двух секций, последовательно соединенных трубопроводом сорбционных колонок с сорбентом, выполненных в виде вертикальной цилиндрической камеры с верхней камерой отвода жидкости и нижней распределительной камерой, присоединенных к сорбционной колонке при помощи фланцев, в разъемах которых расположены поддерживающие решетки с сеткой между ними с размером отверстий в ней 0,5 мм, по три в каждой секции, с возможностью работы как обеих секций, так и каждой в отдельности в случае снятия осевшего на сорбент золота, причем третий бак узла очистки конденсата соединен с нижней распределительной камерой первой сорбционной колонки, верхняя камера которой соединена трубопроводом с нижней камерой второй сорбционной колонки и далее таким же образом с последующими колонками, третья и шестая из которых соединена трубопроводом с баком нейтрализации обеззолоченного раствора, и узел снятия золота, состоящего из расположенной на стенде секции из колонок с сорбентом, соединенных трубопроводом с баком с цианистым раствором, баком для сбора золотого концентрата и электронагревателем. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (51) МПК C22B 11/00 (13) 120 968 U1 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ (21)(22) Заявка: ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ 2010140391/02, 01.10.2010 (24) Дата начала отсчета срока действия патента: 01.10.2010 (72) Автор(ы): Кузьминых Валерий Михайлович (RU), Лебедев Анатолий Николаевич (RU) (45) Опубликовано: 10.10.2012 Бюл. № 28 1 2 0 9 6 8 R U Формула полезной модели Устройство для извлечения золота из ...

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Номер записи: 9
20-10-2015 дата публикации

УСТРОЙСТВО ДЛЯ ИЗВЛЕЧЕНИЯ ЗОЛОТА ИЗ ДЫМОВЫХ ГАЗОВ ПРИ СГОРАНИИ ПРИРОДНЫХ УГЛЕЙ

Номер: RU0000155764U1
Автор: Борисов Виктор Николаевич, Кузьминых Валерий Михайлович, Сорокин Анатолий Петрович, Чурсина Лина Алексеевна
Принадлежит: ФЕДЕРАЛЬНОЕ ГОСУДАРСТВЕННОЕ БЮДЖЕТНОЕ УЧРЕЖДЕНИЕ НАУКИ "АМУРСКИЙ НАУЧНЫЙ ЦЕНТР ДАЛЬНЕВОСТОЧНОГО ОТДЕЛЕНИЯ РОССИЙСКОЙ АКАДЕМИИ НАУК"

Устройство для извлечения золота из дымовых газов при сгорании природных углей, содержащее дымовую трубу, соединенную с топкой, и насадку на дымовую трубу, отличающееся тем, что насадка состоит из трех концентрических цилиндров, выполненных из латунной сетки с размером ячеек не более 2×2 мм, причем диаметр внутреннего цилиндра превышает внешний диаметр дымовой трубы на 200-300 мм, а каждый последующий цилиндр отстоит от предыдущего на 100-150 мм, верхний конец насадки закрыт крышкой, нижний конец насадки установлен в кольцевой желоб со сливом для конденсата и отверстием на дне для герметичного размещения в нем конца дымовой трубы, при этом в дымовой трубе через ее боковую поверхность установлена наклонно трубка с соплом на конце для впрыска воды, которое размещено внутри дымовой трубы со стороны насадки, а свободный конец трубки соединен с эжектором и компрессором. Ц 155764 ко РОССИЙСКАЯ ФЕДЕРАЦИЯ ВУ“ 155 764 91 ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ИЗВЕЩЕНИЯ К ПАТЕНТУ НА ПОЛЕЗНУЮ МОДЕЛЬ ММ9К Досрочное прекращение действия патента из-за неуплаты в установленный срок пошлины за поддержание патента в силе Дата прекращения действия патента: 17.03.2020 Дата внесения записи в Государственный реестр: 01.12.2020 Дата публикации и номер бюллетеня: 01.12.2020 Бюл. №34 Стр.: 1 па 9199 ЕП

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Номер записи: 10
27-04-2016 дата публикации

УСТРОЙСТВО ДЛЯ ОБОГАЩЕНИЯ ЗОЛОТОСОДЕРЖАЩЕГО МИНЕРАЛЬНОГО МАТЕРИАЛА

Номер: RU0000161572U1
Автор: Амдур Алексей Миронович, Апакашев Рафаил Абдрахманович, Давыдов Станислав Яковлевич, Матушкина Анна Николаевна
Принадлежит: Федеральное государственное бюджетное образовательное учреждение высшего образования "Уральский государственный горный университет" (ФГБОУ ВО "УГГУ")

Устройство для обогащения золотосодержащего минерального материала, содержащее отделитель дисперсного золота, отличающееся тем, что оно включает термостойкую емкость с источником нагрева для расплавления золотосодержащего минерального материала, при этом в ее донной части смонтирован отделитель дисперсного золота, содержащий наклонную газопроницаемую огнеупорную капиллярную вставку, емкость, оснащенную патрубком для подачи в нее газа под давлением для обеспечения продувки расплава золотосодержащего минерального материала, карман для оседания частиц золота, шиберный затвор со сливным трубопроводом, а в горловине термостойкой емкости ниже уровня поверхности расплава золотосодержащего минерального материала установлены дозатор обогащенного расплава золотосодержащего минерального материала с отсекателем в виде шиберного затвора и наклонный желоб, причем дозатор установлен под уклоном в сторону отсекателя. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 161 572 U1 (51) МПК C22B 11/02 (2006.01) C22B 9/05 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ (21)(22) Заявка: ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ 2015131439/02, 28.07.2015 (24) Дата начала отсчета срока действия патента: 28.07.2015 (45) Опубликовано: 27.04.2016 Бюл. № 12 1 6 1 5 7 2 R U Формула полезной модели Устройство для обогащения золотосодержащего минерального материала, содержащее отделитель дисперсного золота, отличающееся тем, что оно включает термостойкую емкость с источником нагрева для расплавления золотосодержащего минерального материала, при этом в ее донной части смонтирован отделитель дисперсного золота, содержащий наклонную газопроницаемую огнеупорную капиллярную вставку, емкость, оснащенную патрубком для подачи в нее газа под давлением для обеспечения продувки расплава золотосодержащего минерального материала, карман для оседания частиц золота, шиберный затвор со сливным трубопроводом, а в горловине термостойкой емкости ниже уровня поверхности расплава золотосодержащего минерального ...

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Номер записи: 11
24-08-2017 дата публикации

Устройство для обогащения золотосодержащего минерального материала

Номер: RU0000173389U1
Автор: Амдур Алексей Миронович, Апакашев Рафаил Абдрахманович, Давыдов Станислав Яковлевич, Матушкина Анна Николаевна
Принадлежит: Федеральное государственное бюджетное образовательное учреждение высшего образования "Уральский государственный горный университет" (ФГБОУ ВО "УГГУ")

Устройство относится к цветной металлургии, в частности к пирометаллургическим устройствам для извлечения дисперсного золота из труднообогатимого минерального материала. Устройство для обогащения золотосодержащего минерального материала содержит отделитель дисперсного золота. Термостойкая емкость для обогащения золотосодержащего минерального материала оснащена источником нагрева для обеспечения расплавления золотосодержащего минерального материала. Донная часть термостойкой емкости снабжена газопроницаемой огнеупорной капиллярной вставкой. Горловина термостойкой емкости ниже уровня поверхности расплава золотосодержащего минерального материала снабжена дозатором обогащенного расплава, отсекателем, шиберным затвором и наклонным желобом. Дозатор выполнен неподвижным, в виде желоба из огнеупорного материала и снабжен сквозными отверстиями для прохождения обогащенного расплава. Технической задачей предлагаемого решения является совершенствования конструкции устройства за счет упрощения процесса улавливания частиц дисперсного золота для повышения его извлечения из минерального материала. 1 ил. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 173 389 U1 (51) МПК C22B 11/02 (2006.01) C22B 9/05 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ (21)(22) Заявка: 2016133394, 12.08.2016 (24) Дата начала отсчета срока действия патента: 12.08.2016 Дата регистрации: Приоритет(ы): (22) Дата подачи заявки: 12.08.2016 (45) Опубликовано: 24.08.2017 Бюл. № 24 U 1 3029165 A1, 08.06.2016. CN 103937988 A, 23.07.2014. SU 334268 A1, 30.03.1972. R U (54) Устройство для обогащения золотосодержащего минерального материала (57) Реферат: Устройство относится к цветной металлургии, емкости ниже уровня поверхности расплава в частности к пирометаллургическим устройствам золотосодержащего минерального материала для извлечения дисперсного золота из снабжена дозатором обогащенного расплава, труднообогатимого минерального материала. отсекателем, шиберным ...

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Номер записи: 12
03-04-2019 дата публикации

Устройство для извлечения полезных компонентов

Номер: RU0000188237U1
Автор: Адиль Ринатович Муралеев, Владимир Владимирович Глухов, Владимир Семенович Сонькин, Дмитрий Дмитриевич Маганов, Евгений Геннадьевич Сидин
Принадлежит: Акционерное общество &#34;Приокский завод цветных металлов&#34;

Заявленная полезная модель относится к неорганической химии и может быть использована на предприятиях, перерабатывающих техногенное сырье с различным содержанием целевых компонентов. Устройство для извлечения полезных компонентов представляет собой ванну с крышкой, состоящую из двух частей, верхней прямоугольной, и нижней конусообразной, с размещенным внутри нее на приводном валу перфорированным барабаном, снабженным герметично закрываемой крышкой с размером ячейки меньше минимального размера зерна перерабатываемого сырья, на дне ванны смонтированы сливной патрубок для слива раствора выщелачивания и затвор для выгрузки нерастворимого остатка, при этом устройство дополнительно снабжено хлорпроводом для насыщения раствора выщелачивания газообразным хлором и воздухопроводом для перемешивания содержимого ванны. Технический результат заключается в более качественном перемешивании перерабатываемого сырья с одновременным обеспечением минимальной концентрации целевого компонента в нерастворимом остатке и максимального содержания целевого компонента в растворе выщелачивания. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 188 237 U1 (51) МПК B01D 21/00 (2006.01) C22B 3/04 (2006.01) C22B 11/06 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ (52) СПК B01D 21/00 (2019.02); C22B 3/04 (2019.02); C22B 11/06 (2019.02) (21)(22) Заявка: 2019102620, 30.01.2019 (24) Дата начала отсчета срока действия патента: Дата регистрации: 03.04.2019 (45) Опубликовано: 03.04.2019 Бюл. № 10 169886 U1, 05.04.2017. RU 2522873 C1, 20.07.2014. RU 2291907 C1, 20.01.2007. US 4018567 A1, 19.04.1977. (54) УСТРОЙСТВО ДЛЯ ИЗВЛЕЧЕНИЯ ПОЛЕЗНЫХ КОМПОНЕНТОВ (57) Реферат: Заявленная полезная модель относится к смонтированы сливной патрубок для слива неорганической химии и может быть раствора выщелачивания и затвор для выгрузки использована на предприятиях, нерастворимого остатка, при этом устройство перерабатывающих техногенное сырье с дополнительно снабжено ...

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Номер записи: 13
18-06-2019 дата публикации

ИМПУЛЬСНЫЙ ВАКУУМНЫЙ ДЕЗИНТЕГРАТОР

Номер: RU0000190111U1
Автор: Мальцев Василий Анатольевич, Новопашин Сергей Андреевич, Приходько Виктор Григорьевич, Ярыгин Вячеслав Николаевич, Ярыгин Игорь Вячеславович
Принадлежит: Федеральное государственное бюджетное учреждение науки Институт теплофизики им. С.С. Кутателадзе Сибирского отделения Российской академии наук (ИТ СО РАН)

Полезная модель относится к обогащению полезных ископаемых, в частности к аппаратам для извлечения тонкого золота из глинистых золотосодержащих пород. Задачей полезной модели является создание импульсного вакуумного дезинтегратора с целью увеличения выхода ультрадисперсных частиц драгоценных металлов при их извлечении из золотоносных глинистых пород. Поставленная задача решается тем, что в импульсном вакуумном дезинтеграторе, содержащем ресивер, вакуумный насос, подключенный к ресиверу, рабочую камеру, соединенную при помощи короткого трубопровода с быстродействующим клапаном с ресивером, и имеющую быстродействующий клапан напуска атмосферы, согласно полезной модели, соотношение объемов рабочей камеры и ресивера меньше, чем 1 к 200, вакуумный насос имеет производительность ≥ 0,5 м/с, быстродействующие клапаны выполнены в виде пневматических клапанов. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 190 111 U1 ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ИЗВЕЩЕНИЯ К ПАТЕНТУ НА ПОЛЕЗНУЮ МОДЕЛЬ QB9K Государственная регистрация предоставления права использования по договору Вид договора: лицензионный Лицо(а), которому(ым) предоставлено право использования: Закрытое акционерное общество "ИТОМАК" (RU) Дата и номер государственной регистрации предоставления права использования по договору: 26.11.2020 РД0347656 Дата внесения записи в Государственный реестр: 26.11.2020 Дата публикации и номер бюллетеня: 26.11.2020 Бюл. №33 1 9 0 1 1 1 Условия договора: неисключительная лицензия сроком на 3 года на территории РФ. R U Лицо(а), предоставляющее(ие) право использования: Федеральное государственное бюджетное учреждение науки Институт теплофизики им. С.С. Кутателадзе Сибирского отделения Российской академии наук (RU) R U 1 9 0 1 1 1 U 1 U 1 Стр.: 1

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Номер записи: 14
05-12-2019 дата публикации

ОБЪЁМНЫЙ ЭЛЕКТРОД ПЕРЕМЕННОГО ТОКА ДЛЯ ИЗВЛЕЧЕНИЯ БЛАГОРОДНЫХ МЕТАЛЛОВ

Номер: RU0000194300U1
Автор: Антонов Андрей Александрович, Самотаев Николай Николаевич, Царев Григорий Александрович
Принадлежит: федеральное государственное автономное образовательное учреждение высшего образования "Национальный исследовательский ядерный университет МИФИ" (НИЯУ МИФИ)

Полезная модель относится к электрохимии благородных металлов, в частности электрохлоринации, и может быть использована при переработке вторичных металлов платиновой группы, включая катализаторы, а также их концентратов и аффинированных металлов. Объемный электрод переменного тока для извлечения благородных металлов из катализаторов на основе пористой керамики включает керамическую пористую частицу основы катализатора с расположенными в ее порах благородными металлами. При этом в порах он дополнительно содержит нерасходуемые частицы с электронной проводимостью в виде диспергированных частиц нанографита. Техническим результатом является увеличение процента извлечения благородных металлов на катоде за счет полной электрохлоринации всего объема перерабатываемого сырья. 1 ил., 2 пр. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 194 300 U1 ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ИЗВЕЩЕНИЯ К ПАТЕНТУ НА ПОЛЕЗНУЮ МОДЕЛЬ QZ9K Государственная регистрация изменений, касающихся предоставления права использования по договору Вид договора: лицензионный Лицо(а), которому(ым) предоставлено право использования: Общество с ограниченной ответственностью "ПРОМТОРГ" (RU) Изменения: Изменение условий договора, не отраженных в Государственном реестре. Дата и номер государственной регистрации изменений, касающихся предоставления права использования: 28.09.2021 РД0375948 1 9 4 3 0 0 Лицо(а), предоставляющее(ие) право использования: Федеральное государственное автономное образовательное учреждение высшего образования "Национальный исследовательский ядерный университет "МИФИ" (RU) R U Дата и номер государственной регистрации предоставления права использования по договору, в которое внесены изменения: 24.03.2021 РД0358686 Дата внесения записи в Государственный реестр: 28.09.2021 U 1 1 9 4 3 0 0 R U Стр.: 1 U 1 Дата публикации и номер бюллетеня: 28.09.2021 Бюл. №28

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Номер записи: 15
19-02-2020 дата публикации

ИМПУЛЬСНЫЙ ВАКУУМНЫЙ ДЕЗИНТЕГРАТОР ПЕРИОДИЧЕСКОГО ДЕЙСТВИЯ

Номер: RU0000196195U1
Автор: Новопашин Сергей Андреевич, Приходько Виктор Григорьевич, Ярыгин Игорь Вячеславович
Принадлежит: Федеральное государственное бюджетное учреждение науки Институт теплофизики им. С.С. Кутателадзе Сибирского отделения Российской академии наук (ИТ СО РАН)

Полезная модель относится к обогащению полезных ископаемых, в частности к аппаратам для извлечения тонкого золота из глинистых золотосодержащих пород. Импульсный вакуумный дезинтегратор периодического действия для дезинтеграции золотоносных глинистых пород содержит рабочую камеру, куда помещена глинистая порода, и ресивер, соотношение объемов которых составляет < 1:200. К ресиверу подключен вакуумный насос с производительностью ≥ 0,5 м/с, а также быстродействующие пневматические клапаны откачки и напуска атмосферы. Рабочая камера содержит поддон для глинистой породы, который снабжен нагревателем с регулируемой мощностью до 200 Вт. Полезная модель позволяет повысить эффективность дезинтеграции золотоносных глинистых пород и увеличить выход содержащихся в них ультрадисперсных частиц драгоценных металлов. 1 ил., 1 пр. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 196 195 U1 ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ИЗВЕЩЕНИЯ К ПАТЕНТУ НА ПОЛЕЗНУЮ МОДЕЛЬ QB9K Государственная регистрация предоставления права использования по договору Вид договора: лицензионный Лицо(а), которому(ым) предоставлено право использования: Закрытое акционерное общество "ИТОМАК" (RU) Дата и номер государственной регистрации предоставления права использования по договору: 26.11.2020 РД0347656 Дата внесения записи в Государственный реестр: 26.11.2020 Дата публикации и номер бюллетеня: 26.11.2020 Бюл. №33 1 9 6 1 9 5 Условия договора: неисключительная лицензия сроком на 3 года на территории РФ. R U Лицо(а), предоставляющее(ие) право использования: Федеральное государственное бюджетное учреждение науки Институт теплофизики им. С.С. Кутателадзе Сибирского отделения Российской академии наук (RU) R U 1 9 6 1 9 5 U 1 U 1 Стр.: 1

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Номер записи: 16
29-05-2020 дата публикации

СОРБЦИОННЫЙ МОДУЛЬ ДЛЯ ИЗВЛЕЧЕНИЯ ЗОЛОТА

Номер: RU0000197815U1
Автор: Брюхов Виталий Николаевич, Голдырев Валерий Валерьевич, Мовзитова Ксения Ильнуровна, Наумов Владимир Александрович
Принадлежит: Общество с ограниченной ответственностью "МИП "ГеоИнновация Плюс"

Полезная модель относится к устройствам для осуществления сорбционной технологии извлечения золота из техногенных вод золотоносных отвалов с использованием активных углей. Сорбционный модуль содержит цилиндрический корпус и сорбционный наполнитель из активированного угля. Корпус выполнен в форме стакана из непластифицированного поливинилхлорида с перфорированной боковой поверхностью на 2/3 его высоты, а сорбционный наполнитель размещен в капроновой сетке в виде сменного сорбционного элемента. Щелевые отверстия перфорированной боковой поверхности корпуса выполнены в шахматном порядке, при этом их площадь составляет 20-25% от площади боковой поверхности корпуса. Технический результат заключается в создании сорбционного модуля для извлечения золота не менее 15 г в год из золотоносных отвалов и хвостовых продуктов производства за счет использования естественной циркуляции техногенных вод в теле отвала. 1 з.п. ф-лы, 3 ил. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 197 815 U1 ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ИЗВЕЩЕНИЯ К ПАТЕНТУ НА ПОЛЕЗНУЮ МОДЕЛЬ PC9K Государственная регистрация отчуждения исключительного права по договору Лицо(а), передающее(ие) исключительное право: Общество с ограниченной ответственностью "Малое инновационное предприятие "ГеоИнновация Плюс" (RU) Адрес для переписки: 614990, Пермский край, г. Пермь, ул. Букирева, 15, ПГНИУ (УИД) 1 9 7 8 1 5 (73) Патентообладатель(и): Общество с ограниченной ответственностью "Малое инновационное предприятие "ГеоИнновация Плюс" (RU), Федеральное государственное бюджетное образовательное учреждение высшего образования "Пермский государственный национальный исследовательский университет" (RU) R U Приобретатель(и) исключительного права: Общество с ограниченной ответственностью "Малое инновационное предприятие "ГеоИнновация Плюс" (RU), Федеральное государственное бюджетное образовательное учреждение высшего образования "Пермский государственный национальный исследовательский университет" (RU) Дата и номер ...

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Номер записи: 17
24-12-2020 дата публикации

УСТРОЙСТВО ДЛЯ ИЗВЛЕЧЕНИЯ ЗОЛОТА ИЗ БУРЫХ И КАМЕННЫХ УГЛЕЙ

Номер: RU0000201651U1
Автор: Борисов Виктор Николаевич, Кузьминых Валерий Михайлович, Сорокин Анатолий Петрович, Чурсина Лина Алексеевна
Принадлежит: Федеральное государственное бюджетное учреждение науки институт геологии и природопользования дальневосточного отделения Российской академии наук

Полезная модель относится к извлечению золота из бурых и каменных углей гидрометаллургическим способом. Устройство содержит полый стальной цилиндр с глухим днищем, в верхней части которого при помощи резьбы герметично установлена крышка с уплотнительной прокладкой под ней и вертикальным патрубком с наружной стороны, с расположенной на патрубке силиконовой трубкой. Нижний конец силиконовой трубки выполнен с возможностью опускания в стакан с сорбентом для возможности конденсации пара с золотом. В середине внутреннего объема стального цилиндра закреплена сетка с отверстиями 1 мм. При этом стальной цилиндр выполнен с возможностью помещения его в термостат. В патрубке расположен шток клапана, выполненный с возможностью свободного вертикального перемещения, верхняя часть которого имеет коническое расширение с возможностью опоры на коническую расточку седла клапана, являющегося верхним концом патрубка, а на нижнем конце установлены съемные калиброванные грузики. Устройство позволяет повысить интенсивность процесса извлечения золота из угля. 1 ил. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 201 651 U1 (51) МПК C22B 11/00 (2006.01) C22B 3/00 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ (52) СПК C22B 11/00 (2020.08); C22B 3/00 (2020.08) (21)(22) Заявка: 2020127939, 19.08.2020 (24) Дата начала отсчета срока действия патента: Дата регистрации: 24.12.2020 (45) Опубликовано: 24.12.2020 Бюл. № 36 (54) УСТРОЙСТВО ДЛЯ ИЗВЛЕЧЕНИЯ ЗОЛОТА ИЗ БУРЫХ И КАМЕННЫХ УГЛЕЙ (57) Реферат: Полезная модель относится к извлечению стального цилиндра закреплена сетка с золота из бурых и каменных углей отверстиями 1 мм. При этом стальной цилиндр гидрометаллургическим способом. Устройство выполнен с возможностью помещения его в содержит полый стальной цилиндр с глухим термостат. В патрубке расположен шток клапана, днищем, в верхней части которого при помощи выполненный с возможностью свободного резьбы герметично установлена крышка с вертикального ...

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Номер записи: 18
17-03-2022 дата публикации

Устройство для извлечения крупных фракций драгметаллов при разработке россыпных месторождений

Номер: RU0000209589U1
Автор: Валентин Дмитриевич Лукьянов, Евгений Демьянович Кудлай, Лада Евгеньевна Кудлай, Юрий Евгеньевич Кудлай
Принадлежит: Общество с ограниченной ответственностью &#34;ГОЛДТЕХ&#34;

Полезная модель относится к горной промышленности и может использоваться для обогащения песков россыпных месторождений драгметаллов, а также для повторной переработки отходов промывки для доизвлечения крупных фракций драгметаллов, в т.ч. находящихся в сростках с пустыми породами. Устройство для извлечения крупных фракций драгметаллов включает наклонный желоб из магнито-инертных материалов, обвязанный опоясывающей металлической рамой, с расположенной в верхней части желоба приемной горловиной и успокоителями скорости потока горной массы. В днище желоба выполнен люк, закрытый подвижной крышкой с электрозащелкой, и установлены датчик металлодетектора и блок управления, связанные электропроводной связью с исполнительным механизмом изъятия драгметаллов. Устройство позволяет повысить производительность, качество и полноту извлечения драгметаллов из горной массы, а также обеспечить возможность оперативного управления процессом доизвлечения. 2 з.п. ф-лы, 2 ил. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 209 589 U1 (51) МПК C22B 11/12 (2006.01) B03B 5/70 (2006.01) B03B 13/04 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ (52) СПК C22B 11/12 (2022.01); B03B 5/70 (2022.01); B03B 13/04 (2022.01) (21)(22) Заявка: 2021135134, 30.11.2021 (24) Дата начала отсчета срока действия патента: Дата регистрации: 17.03.2022 (45) Опубликовано: 17.03.2022 Бюл. № 8 2 0 9 5 8 9 R U (54) Устройство для извлечения крупных фракций драгметаллов при разработке россыпных месторождений (57) Реферат: Полезная модель относится к горной горловиной и успокоителями скорости потока промышленности и может использоваться для горной массы. В днище желоба выполнен люк, обогащения песков россыпных месторождений закрытый подвижной крышкой с драгметаллов, а также для повторной электрозащелкой, и установлены датчик переработки отходов промывки для доизвлечения металлодетектора и блок управления, связанные крупных фракций драгметаллов, в т.ч. электропроводной связью ...

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Номер записи: 19
19-04-2012 дата публикации

Ionic liquid solvents of perhalide type for metals and metal compounds

Номер: US20120090430A1
Автор: John Holbrey, Robin Don Rogers
Принадлежит: Individual

The present invention relates to a process for dissolving metals in perhalide containing ionic liquids, and to the extraction of metals from mineral ores; the remediation of materials contaminated with heavy, toxic or radioactive metals; and to the removal of heavy and toxic metals from hydrocarbon streams.

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Номер записи: 20
19-04-2012 дата публикации

Enhanced recovery of gold

Номер: US20120090433A1
Автор: Dean R. Butler
Принадлежит: PRECIOUS METALS RECOVERY PTY LTD

An improved method for recovering refractory gold from a material comprising treating the material to at least partially remove nitric acid-insoluble lead moieties.

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Номер записи: 21
24-05-2012 дата публикации

Method for Collecting Metal

Номер: US20120125853A1
Автор: Hideko Inoue, Kaoru Kato, Ryoji Nomura, Satoshi Seo
Принадлежит: Semiconductor Energy Laboratory Co Ltd

It is an object of the present invention to collect a scarce metal such as iridium from a light-emitting element which is no longer used. A method for collecting a metal is provided in which an organic metal compound which can emit visible light from a triplet excited state at room temperature is heated, or an EL layer of a light-emitting layer containing an organic metal compound which can emit visible light from a triplet excited state at room temperature is dissolved in a solvent to form a solution, and the solution is heated, irradiated with microwaves or treated with acid water. According to the above method, resources of metals such as iridium or platinum, which are scarce metals, can be utilized efficiently.

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Номер записи: 22
06-09-2012 дата публикации

Method of leaching copper and gold from sulfide ores

Номер: US20120222519A1
Автор: Eiki Ono, Kazuhiro Hatano, Koji Katsukawa, Yoshifumi Abe
Принадлежит: JX Nippon Mining and Metals Corp

Disclosed is a method of leaching copper and gold from sulfide ores, which includes Process (1) of bringing a first aqueous acidic solution which contains chlorine ion, copper ion and iron ion, but no bromine ion, into contact with sulfide ores under supply of an oxidizing agent, so as to leach copper component contained in the sulfide ores; Process (2) of separating, by solid-liquid separation, a leaching reaction liquid obtained in Process (1), into a leaching residue and a leachate; and Process (3) of bringing a second aqueous acidic solution which contains chlorine ion, bromine ion, copper ion and iron ion, into contact with the leaching residue obtained in Process (2) under supply of an oxidizing agent, so as to leach gold contained in the leaching residue.

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Номер записи: 23
20-12-2012 дата публикации

Complete non-cyanogens wet process for green recycling of waste printed circuit board

Номер: US20120318681A1
Автор: BIN Li, BO LIU, Dean Pan, Jianjun TIAN, Shengen ZHANG
Принадлежит: University of Science and Technology Beijing USTB

The invention related to the recycling field of waste printed circuit boards (WPCB), and especially involved a complete non-cyanogens wet process for green recycling of WPCB, which belonged to the field of recycle economy. In the invention, the process included that WPCB were broken by the jaw crusher, and then mixed copper powders and nonmetallic powders were separated by the method of air classification, the mixed copper powders were smelted and casted to get copper anode plates, the copper was purified by electrolytion, the valuable metals (such as copper, gold, silver, platinum and palladium, lead and tin) were recycled from the copper anode slime, and the waste water was recycled. The recovery ratio of all-metal was above 98%. The purity of the cathode copper was up to 4N level. The ratio of de-coppering was above 96%. The recovery ratio of gold was above 98.

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Номер записи: 24
11-04-2013 дата публикации

Method and Apparatus for Recovering Rare Metal

Номер: US20130089477A1
Автор: Uehara Haruo
Принадлежит:

Disclosed is a method and apparatus for recovering rare metal, which separates and collects rare metals by making use of chemical actions in an efficient combination of adsorption and separation, thereby reducing work load and improving work safety. The method for recycling rare metals includes a leaching step in which a rare metal of palladium, platinum, and rhodium is mixed with hydrochloric acid into a hydrochloric acid mixture, which is then stirred at one atmospheric pressure or lower at a temperature from 50 to 90 degrees Centigrade. The vapor resulting from the stirring is condensed, and the hydrochloric acid resulting from the condensing is fed back to the original hydrochloric acid mixture to produce a hydrochloric acid leaching solution. The hydrochloric acid leaching solution produced in the leaching step is used to collect the rare metals. 1. A rare metal recovery method , which comprises: mixing, under a pressure of 1 atmosphere or less at a temperature of from 50° C. to 90° C., a hydrochloric acid mixture liquid obtained by mixing a waste material of rare metal comprising palladium, platinum and rhodium with a hydrochloric acid;', 'condensing steam obtained by said mixing; and', 'flowing a hydrochloric acid obtained by said condensing back to the hydrochloric acid mixture liquid to prepare a hydrochloric acid leaching liquid; and, 'a leaching step comprisinga step of utilizing the hydrochloric acid leaching liquid obtained by said leaching step to recover the rare metal.2. The rare metal recovery method claim 1 , as claimed in claim 1 , further comprising:a palladium adsorption step of causing the hydrochloric acid leaching liquid obtained by said leaching step to pass through a palladium adsorbent impregnated with adsorbent for adsorbing the palladium and causing the palladium to adsorb on the palladium adsorbent;a platinum adsorption step of causing a residual liquid from said palladium adsorption step to pass through a platinum adsorbent impregnated ...

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Номер записи: 25
18-04-2013 дата публикации

METHOD FOR RECOVERING PRECIOUS METALS AND COPPER FROM LEACH SOLUTIONS

Номер: US20130091990A1
Автор: Choi Yeonuk, JR. John William, Langhans, Wang Qiankun
Принадлежит: BARRICK GOLD CORPORATION

The present disclosure is directed to a process for recovering a precious metal from a pregnant leach solution using a resin extractant. The precious metal is eluted from the loaded resin using an eluant comprising trithionate. The barren resin is contacted with a sulfide, bisulfide, and/or polysulfide to convert sorbed trithionate to thiosulfate. The desorbed thiosulfate is contacted with an oxidant and converted to trithionate for eluant recycle. 1. A method , comprising:(a) contacting a precious metal-containing solution with a barren resin to form a precious metal-loaded resin and a precious metal barren solution;(b) contacting the precious metal-loaded resin with a precious metal eluant comprising a trithionate to form a precious metal-rich eluant and a barren resin comprising trithionate;(c) contacting the barren resin with at least one of a sulfide, bisulfide and polysulfide to convert at least a portion of the trithionate into thiosulfate; and(d) contacting the thiosulfate with an oxidant to convert at least a portion of the thiosulfate into a trithionate for recycle to step (b) as an eluant component.2. The method of claim 1 , wherein at least most of the trithionate on the barren resin is converted into thiosulfate and wherein at least most of the thiosulfate from contacting step (c) is converted by the oxidant into the trithionate.3. The method of claim 2 , wherein a sulfite ion concentration in the precious metal eluant is at least about 0.01 M claim 2 , wherein a pH of the precious metal eluant is maintained within a range of from about pH 4.5 to about pH 14 claim 2 , and wherein a trithionate concentration in the precious metal eluant is at least about 0.0120 M.4. The method of claim 3 , wherein the sulfite ion concentration in the precious metal eluant is at least about 0.1 M and the trithionate concentration in the precious metal eluant is at least about 0.05 M.5. The method of claim 4 , wherein the sulfite ion concentration in the precious metal ...

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Номер записи: 26
02-05-2013 дата публикации

Method for recovering gold by solvent extraction

Номер: US20130104701A1
Автор: Erkki Paatero, Mika Haapalainen
Принадлежит: OUTOTEC OYJ

The invention relates to a method for recovering gold by solvent extraction from an acidic chloride-containing aqueous solution or from slurry containing gold-bearing solids using a diester-based reagent that is poorly soluble in water as organic extraction solution. In accordance with the method, gold is extracted extremely effectively, but other precious metals and many other metals quite sparingly. Gold is stripped from the extraction phase with pure water, from which the gold can be reduced either chemically or electrochemically.

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Номер записи: 27
02-05-2013 дата публикации

METHOD FOR SEPARATION OF CHEMICALLY PURE OS FROM METAL MIXTURES

Номер: US20130108525A1
Автор: Cutler Cathy S., Engelbrecht Hendrik P., Manson Leonard, Wilder Stacy Lynn
Принадлежит: The Curators of the University of Missouri

A method for separating an amount of osmium from a mixture containing the osmium and at least one other additional metal is provided. In particular, method for forming and trapping OsOto separate the osmium from a mixture containing the osmium and at least one other additional metal is provided. 1. A method of separating an amount of osmium from a mixture comprising the amount of osmium and at least one additional metal , the method comprising:{'sub': '4', 'a. contacting the mixture with an oxidizing solution to form a volatile OsOvapor;'}{'sub': 4', '2', '4', '2, 'b. bubbling the OsOvapor through a KOH trapping solution to form an amount of K[OsO(OH)] dissolved in the KOH trapping solution;'}{'sub': 2', '4', '2, 'c. contacting the dissolved K[OsO(OH)] with a reducing agent to form an Os precipitate; and'}d. separating the Os precipitate from the KOH trapping solution.2. The method of claim 1 , wherein the mixture is an irradiated Os-190 metal target claim 1 , the amount of osmium comprises an amount of Os-191 claim 1 , and the at least one additional metal is chosen from Ir-192 claim 1 , Ir-193 claim 1 , Ir-194 claim 1 , Pt-192 claim 1 , Pt-194 claim 1 , and combinations thereof.3. The method of claim 1 , wherein the oxidizing solution comprises an aqueous solution of an oxidizing agent chosen from NaClO claim 1 , LiClO claim 1 , KClO claim 1 , NaIO claim 1 , NaSO claim 1 , XeO claim 1 , NaClO claim 1 , NaClO claim 1 , NaClO claim 1 , NaOH in contact with Clgas claim 1 , other alkali salts of ClO claim 1 , ClO claim 1 , ClOand ClO claim 1 , and combinations thereof.4. The method of claim 3 , wherein the oxidizing solution is an aqueous solution of NaClO at a concentration of about 12% available chlorine.5. The method of claim 4 , wherein the mixture is contacted with the oxidizing solution in an impinger device.6. The method of claim 4 , wherein the mixture is contacted with the oxidizing solution at a temperature of about 40° C. until the mixture is dissolved ...

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Номер записи: 28
16-05-2013 дата публикации

TRANSPORTABLE, SELF-CONTAINED ASSAY FACILITY AND METHOD OF USING SAME TO PROCURE AND ASSAY PRECIOUS METALS

Номер: US20130118948A1
Автор: Nadonza Walter, Noyes Chris M.
Принадлежит:

A transportable, self-contained assay facility built in a modified standard shipping container that is completely equipped to melt and assay precious metals, particularly gold and silver. An induction furnace melts the metal that is then poured into an ingot. The ingot is weighed and analyzed using an XRF alloy analyzer and the percentage of gold and/or other metals recorded. The value of the gold at current market prices is calculated and the assay and the value of the ingot is printed and given to the seller. The seller may opt to receive the ingot and pay the assayer an assay fee. Alternately, the seller may ask to be paid in cash, by bullion, wire transfer, or by an open hedge. A transfer or hedge is initiated and confirmed from the assay facility. The ingots may be securely stored in a safe within the assay facility. 1. A transportable , self-contained assay facility , comprising:a) a closed, sealable, shippable container suitable for containing all tools and equipment required to melt/smelt and assay precious metals, said container being adapted to allow a seller of precious metals to observe the melting and assaying processes;b) a scale disposed within said container and positioned within view of said seller, said scale being adapted to output a signal representative of a weight of an object weighed thereupon;c) a furnace disposed in said container adapted to melt/smelt precious metal received from said seller, said furnace disposed within view of said seller and adapted to melt said precious metal to produce an ingot;d) an X-ray fluorescence (XRF) alloy analyzer disposed in said vehicle within view of said seller and adapted to analyze said melted ingot and to record and display the results of an analysis thereof;e) means for determining a current market price of at least one precious metal present in said ingot, said means for determining being disposed proximate said container;f) a computer disposed within said container and adapted to receive at least ...

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Номер записи: 29
06-06-2013 дата публикации

Recovery Method for High Purity Platinum

Номер: US20130139648A1
Автор: Sekiguchi Junnosuke
Принадлежит: JX NIPPON MINING & METALS CORPORATION

A high purity platinum recovery method including the steps of dissolving a platinum alloy containing ruthenium in aqua regia and eliminating residue, thereafter causing acid with platinum dissolved therein and an ammonium chloride solution to react so as to deposit chloroplatinic ammonium salt, and reducing the chloroplatinic ammonium salt to obtain a platinum sponge. The method is characterized in that acid with platinum dissolved therein and the ammonium chloride solution are caused to react at a temperature of 40° C. or higher. Provided is a method which enables recovery, at a high yield, of high purity platinum which can be reused in a platinum and a platinum-containing target as a result of efficiently eliminating ruthenium, cobalt, chromium, copper, iron, nickel, silicon and the like which become included in a spent platinum alloy sputtering target, particularly a magnetic material target, and in scraps such as mill ends, sawdust, and surface grinding scraps generated during the production process of such a target. 1. A high purity platinum recovery method including the steps of dissolving a platinum alloy containing ruthenium in aqua regia and eliminating residue , thereafter causing acid with platinum dissolved therein and an ammonium chloride solution to react so as to deposit chloroplatinic ammonium salt , and reducing the chloroplatinic ammonium salt to obtain a platinum sponge , wherein the acid with platinum dissolved therein and the ammonium chloride solution are caused to react at a temperature of 40° C. or higher , wherein a platinum concentration of a liquid resulting from dissolving the platinum alloy containing ruthenium in the aqua regia is 15 g/L or more , and wherein a ruthenium concentration of the liquid resulting from dissolving the platinum alloy containing ruthenium in the aqua regia is 6 g/L or less.23-. (canceled)4. The high purity platinum recovery method according to claim 1 , wherein a ruthenium content as an impurity in the platinum ...

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Номер записи: 30
27-06-2013 дата публикации

Process For Producing Silver Nanowires

Номер: US20130160608A1
Автор: Kaiser Theo, Maier Georg, Nusko Robert
Принадлежит: Heraeus Precious Metals GmbH & Co. KG

Described are processes for the production of silver nanowires comprising forming a reaction mixture including a polyol, an organic chemical adsorbed to a silver surface, a chemical to form a halide and/or pseudohalide and a chemical which forms a redox pair. A silver salt is added to the reaction mixture and temperature is maintained to form the silver nanowires. 1. A process for the production of silver nanowires , the process comprising: a polyol,', 'an organic chemical adsorbed on to a silver surface,', {'sup': −', '−', '−', '−', '−', '−', '−, 'a chemical which forms one or more of a halide and a pseudohalide, wherein the chemical which forms a halide is a salt of one or more of the halides Cl, Br and I and wherein the chemical which forms a pseudohalide is a salt of one or more of the pseudohalides SCN, CN, OCN and CNO,'}, 'a chemical which forms a redox pair, the chemical selected from the group consisting of bromine, iodine, vanadium and mixtures thereof,, 'a) providing of a reaction mixture comprising'}b) adding a silver salt in an amount such that the concentration of silver in the reaction mixture is at least 0.5 wt. %, based on the total weight of the reaction mixture, the silver salt being added at a temperature of the reaction mixture of at least 100° C., andc) maintaining the temperature of the reaction mixture of at least 100° C. for the duration of the reaction.2. The process according to claim 1 , wherein the silver salt is added in an amount such that the concentration of silver in the reaction mixture is at least 1.0 wt. % claim 1 , based on the total weight of the reaction mixture.3. The process of claim 1 , wherein the reaction mixture comprises one or more of the chemical which forms the halide and the chemical which forms the pseudohalide in an amount such that the concentration of the halide and/or of the pseudohalide in the reaction mixture is in a range of from 5 ppm to 2 claim 1 ,000 ppm.4. The process of claim 1 , wherein the chemical ...

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Номер записи: 31
18-07-2013 дата публикации

METHOD FOR EFFICIENTLY RECOVERING PLATINUM GROUP ELEMENTS FROM COPPER-IRON SCRAP

Номер: US20130180363A1
Автор: NAKAMOTO Masashi, YAMAMOTO Takaiku
Принадлежит: NIPPON STEEL & SUMITOMO METAL CORPORATION

A method for efficiently recovering a platinum group element comprises melting copper-iron scrap containing a platinum group element, forming the melt into two liquid phases, a molten copper phase containing at least one rare metal selected from the group consisting of Nd, Pr, and Dy and a molten iron phase having a carbon concentration of at least 1 mass %, with the carbon contained in the molten iron phase being derived from carbon contained in the melt, separating the two liquid phases, recovering the molten copper phase, and separating and recovering from the molten copper phase a platinum group element dissolved therein. The copper-iron scrap may contain a rare metal, or a member containing a rare metal may be added to the melt with a preferred total concentration of rare metals in the melt being at least 1 mass %. 1. A method of recovering a platinum group element in copper-iron scrap characterized bymelting copper-iron scrap containing a platinum group element to form a melt,forming the melt into two liquid phases which are a molten copper phase containing at least one rare metal selected from the group consisting of Nd, Pr, and Dy and a molten iron phase having a carbon concentration of at least 1 mass %, wherein the carbon contained in the molten iron phase is derived from a carbon source contained in the melt,separating the two liquid phases and recovering the molten copper phase, andseparating and recovering a platinum group element dissolved in the molten copper phase from the molten copper phase.2. A method as set forth in wherein the molten copper phase containing the rare metal is formed by using scrap containing the rare metal as the copper-iron scrap.3. A method as set forth in wherein the molten copper phase containing the rare metal is formed by adding a member containing the rare metal to the melt.4. A method as set forth in wherein the total concentration of the rare metal contained in the molten copper phase is at least 1 mass %.5. A method as ...

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Номер записи: 32
29-08-2013 дата публикации

PROCESS FOR THE RECOVERY OF GOLD FROM AN ORE IN CHLORIDE MEDIUM WITH A NITROGEN SPECIES

Номер: US20130220079A1
Автор: Harris Bryn, White Carl
Принадлежит: NEOMET TECHNOLOGIES INC.

A process and system for recovery of gold from an ore having the steps of i) providing the ore containing the gold to be recovered, ii) leaching the ore in an oxidative chloride medium, including a nitrogen species to produce a solution comprising gold; and iii) recovering the gold from the solution. The gold in a preferred embodiment is recovered from refractory and carbonaceous ores. 1. A cyanide-free process for recovery of gold from an ore comprising the steps of:i) providing the ore comprising the gold to be recovered;ii) leaching the ore in a chloride oxidative medium, comprising nitric acid to produce a chloride solution comprising gold; andiii) recovering the gold from the chloride solution,wherein recovering the gold from the chloride solution is made byiv) contacting the chloride solution comprising gold with a resin adsorbent to selectively adsorb the gold and produce a barren solution; and.v) stripping the gold from the loaded resin adsorbent by elution with diluted hydrochloric acid,wherein the barren solution is treated with a matrix solution to produce the chloride medium which is recycled to step ii), and hematite.2. The process according to claim 1 , wherein other precious metals may be recovered from the barren solution before the treatment with the matrix solution.3. The process according to claim 1 , wherein the nitric acid is regenerated in step ii) with oxygen.4. The process according to claim 1 , wherein arsenic species in the ore is converted to stable and environmentally benign scorodite.5. The process according to claim 1 , wherein the nitric acid is in a concentration of 1 to 50 g/L in the chloride oxidative medium.6. The process according to claim 1 , wherein the nitrogen species is continuously regenerated.7. The process according to claim 1 , wherein the leaching is made at a temperature of 80° C. to 160° C.8. The process according to claim 1 , wherein the ore is a refractory and/or carbonaceous ore.9. The process according to claim 1 , ...

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Номер записи: 33
29-08-2013 дата публикации

METHOD AND APPARATUS FOR LEACHING METAL FROM MINING ORE

Номер: US20130221586A1
Автор: MITCHELL William S.
Принадлежит: Tekni-Plex, Inc.

Porous leach pipe and method for leaching metals from mining ores. The porous pipe may be buried beneath the surface of a pile of mined ore, providing a more even and uniform distribution of the leaching solution across the pile, increasing metal yields, reducing water consumption and eliminating pooling and ponding of the solution on the top of the piles as occurs with prior art drip line emitters. 120-. (canceled)21. An apparatus for leaching metal from mining ore , comprising a microporous leach pipe adapted to be buried beneath a surface of a pile of mining ore , the microporous leach pipe comprising a flexible microporous tubular wall of rubber or plastic material having a porous sponge-like structure with a multiplicity of interconnected irregular shaped pores such that a leach solution under pressure in the pipe will seep through the wall at a rate of from 0.5 to 2.0 gallons per 100 feet per minute.22. The apparatus of claim 21 , wherein the microporous wall has a pore size in a range of from 0.001 to 0.004 inch.23. The apparatus of claim 21 , wherein the length of the microporous wall is at least 100 feet.24. The apparatus of claim 21 , wherein the microporous wall has a wall thickness of at least 0.05 inches.25. The apparatus of claim 21 , wherein the microporous wall has an inner diameter of at least 0.25 inch.26. The apparatus of claim 21 , wherein the microporous wall has a pore size in a range of from 0.001 to 0.004 inch claim 21 , a wall thickness of from 0.05 to 0.5 inch claim 21 , an inner diameter of from 0.25 to 1 inch claim 21 , and a length of at least 100 feet. The present invention relates to a method and apparatus for leaching metal from a pile of mining ore, which method and apparatus delivers a leaching solution more uniformly across the pile thereby increasing metal yields, reducing water consumption and reducing environmental concerns.Copper, gold and other mined ores are blasted or crushed into small chunks and placed directly into large ...

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Номер записи: 34
24-10-2013 дата публикации

METHOD FOR RECOVERING PRECIOUS METAL FROM SOLUTION CONTAINING PRECIOUS METAL IONS, EXTRACTING AGENT OR ADSORBENT USED THEREFOR, AND BACK-EXTRACTING AGENT OR DESORBENT

Номер: US20130281726A1
Автор: Sakaki Takashi, Suso Yukinori
Принадлежит: TOSOH CORPORATION

To provide a method for recovering a precious metal from a solution containing precious metal ions, an extracting agent or adsorbent used therefor, and a back-extracting agent or desorbent. 3. The method for recovering a precious metal according to claim 1 , wherein the precious metal ions are palladium ions claim 1 , and the precious metal is palladium.4. The method for recovering a precious metal according to claim 1 , wherein the sulfur-containing amino acid derivative is a compound of the formula (I) wherein Ris a methyl group claim 1 , R's are each independently a hydrogen atom claim 1 , a methyl group claim 1 , an ethyl group claim 1 , a vinyl group claim 1 , a Clinear claim 1 , branched or cyclic hydrocarbon group or a Caromatic hydrocarbon group claim 1 , and n is 1.5. The method for recovering a precious metal according to claim 1 , wherein the sulfur-containing amino acid derivative is methionine.7. The method for recovering a precious metal according to claim 6 , wherein the amide-containing sulfide compound is a compound of the formula (II) wherein R is n-octyl claim 6 , and n is 1.8. The method for recovering a precious metal according to claim 1 , wherein the adsorbent is fixed on a carrier.9. The method for recovering a precious metal according to claim 8 , wherein the carrier is alumina or silica gel.10. The method for recovering a precious metal according to claim 1 , wherein the reduction treatment is electrolytic reduction by electrolysis.14. An extracting agent or adsorbent containing the amide-containing sulfide compound as defined in .15. The adsorbent according to claim 14 , wherein the amide-containing sulfide compound is fixed on a carrier.16. The adsorbent according to claim 15 , wherein the carrier is alumina or silica gel. The present invention relates to a method for recovering a precious metal, which comprises subjecting a solution containing precious metal ions obtained by extraction or adsorption by an extracting agent or an adsorbent ...

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Номер записи: 35
31-10-2013 дата публикации

CHLORIDE PROCESS FOR THE LEACHING OF GOLD

Номер: US20130283976A1
Автор: Halim M. A., Lakshmanan Vaikuntam I., Sridhar Ramamritham
Принадлежит:

A process for the extraction of gold from a gold-bearing ore or concentrate, comprising the steps of leaching the gold-bearing ore or concentrate with a lixiviant of hydrochloric acid and magnesium chloride at atmospheric pressure at a temperature of at least 90° C. and an Eh of at least 900 mV. After a liquid/solids separation step, the solution obtained is subjected to an organic solvent extraction step using an oxime to obtain a solution of organic solvent containing gold, which is stripped with sodium thiosulphate to recover gold. The extraction may be operated to extract gold with or without iron. Materials used in the process may be recycled. The process avoids environmental and other hazards associated with the use of cyanide to extract gold. 1. A process for the extraction of gold from a gold-bearing ore or concentrate , comprising the steps of:a) leaching the gold-bearing ore or concentrate with a lixiviant of hydrochloric acid and magnesium chloride at atmospheric pressure at a temperature of at least 90° C. and an Eh of at least 900 mV; andb) subjecting the leach solution so obtained to a liquid/solids separation step.2. The process of in which liquid from step b) is subjected to steps for recovery of gold.3. The process of in which the liquid is subjected to organic solvent extraction followed by steps to recover gold from the resultant pregnant gold-bearing organic solvent extractant solution.4. The process of in which the temperature is in the range of 90-100° C. and the Eh is in the range of 1050-1150 mV.5. A process for the extraction of gold from a gold-bearing ore or concentrate claim 1 , comprising the steps of:a) leaching the gold-bearing ore or concentrate with a lixiviant of hydrochloric acid and magnesium chloride at atmospheric pressure at a temperature of at least 90° C. and an Eh of at least 900 mV;b) subjecting the solution obtained in step a) to a liquid/solids separation step;c) subjecting the liquid obtained in step b) to an organic ...

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Номер записи: 36
07-11-2013 дата публикации

PROCESS AND PLANT FOR TREATING ORE CONCENTRATE PARTICLES CONTAINING VALUABLE METAL

Номер: US20130291684A1
Автор: BERG Gunnar, GÜNTNER Jochen, Holmström Åke, Lundholm Karin
Принадлежит: OUTOTEC OYJ

The present invention concerns a process and a plant for treating ore concentrate particles containing valuable metal and having at least arsenic and sulfur containing components. The process comprises a two-stage roasting process comprising a first roasting step () made in a first roasting reactor () and a second roasting step () made in a second roasting reactor (). A gas mixture is formed from the first process gas component () obtained from the first roasting step()and from the second process gas component () obtained from the second roasting step (). Post combustion of the gas mixture is made in a post combustion chamber (). The post combustion operates with said reducing and sulphide rich first process gas component () and the second process gas component () as oxidizer gas in order to decompose SOin the gas mixture to reduce the SOcontent. The risk of accretion formation and corrosion in the post combustion chamber and in subsequent steps is reduced. Finally the exit gas () is exposed to sub sequent gas cooling and dust removal steps ( to ).

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Номер записи: 37
05-12-2013 дата публикации

PROCESS FOR SEPARATING AT LEAST ONE PLATINOID ELEMENT FROM AN ACIDIC AQUEOUS SOLUTION COMPRISING, BESIDES THIS PLATINOID ELEMENT, ONE OR MORE OTHER CHEMICAL ELEMENTS

Номер: US20130319178A1
Автор: Goettmann Frédéric, Grandjean Agnès, Smutek Bernhard
Принадлежит: Commissariat A L'Energie Atomique Et Aux Energies Alternatives

The invention relates to a process for recovering at least one platinoid element contained in an acidic aqueous solution comprising chemical elements other than said platinoid element, said process comprising the following steps: 1. Method for recovering at least one platinoid element contained in an acidic aqueous solution comprising chemical elements other than said platinoid element , said process comprising the following steps:a step of bringing said acidic aqueous solution into contact with a reducing amount of a reducing agent which is a non-sulphurous and non-glucidic alcoholic compound chosen from cyclic, optionally aromatic, alcohols and aliphatic polyols, by means of which said platinoid element is reduced to its 0 oxidation state;a step of separating said thus reduced platinoid element from said acidic aqueous solution.2. Process according to claim 1 , wherein cyclic claim 1 , optionally aromatic claim 1 , alcohols are cyclic claim 1 , optionally aromatic claim 1 , hydrocarbon compounds comprising at least one ring directly bearing at least one hydroxyl group.3. Process according to claim 2 , wherein the cyclic claim 2 , optionally aromatic claim 2 , hydrocarbon compounds comprising at least one ring directly bearing at least one hydroxyl group claim 2 , are alicyclic and monocyclic compounds comprising from 4 to 10 carbon atoms claim 2 , bearing at least one hydroxyl group.4. Process according to claim 3 , wherein the alicyclic and monocyclic compound is cyclohexanol.5. Process according to claim 1 , wherein the cyclic claim 1 , optionally aromatic claim 1 , alcohols are cyclic claim 1 , optionally aromatic claim 1 , hydrocarbon compounds claim 1 , the ring of which bears at least one claim 1 , linear or branched claim 1 , saturated or unsaturated hydrocarbon group claim 1 , bearing at least one hydroxyl group.6. Process according to claim 5 , wherein said compounds are monocyclic aromatic compounds claim 5 , the ring of which bears at least one claim 5 ...

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Номер записи: 38
12-12-2013 дата публикации

METHOD FOR COLLECTION OF RUTHENIUM OR RUTHENIUM COMPOUND

Номер: US20130330255A1
Автор: NISHIMURA Yoshio, Ouchi Takashi
Принадлежит: MITSUBISHI GAS CHEMICAL COMPANY, INC.

According to the present invention, ruthenium or a ruthenium compound, which is expensive, can be collected with high efficiency even from an aqueous solution containing a water-soluble salt, a lower alcohol, an organic acid or the like, by adding at least one specific inorganic adsorbent to an aqueous solution containing ruthenium or the ruthenium compound, dissolving the entirety or a part of the inorganic adsorbent under an acidic condition, and then adding an alkali to adjust the solution to be an alkaline solution having a pH value of 7 or higher, thereby depositing the inorganic adsorbent while causing the inorganic adsorbent to adsorb ruthenium or the ruthenium compound. 1. A method for collection of ruthenium or a ruthenium compound , comprising the steps of:putting an aqueous solution containing ruthenium or a ruthenium compound into contact with an inorganic adsorbent;dissolving the entirety or a part of the inorganic adsorbent under an acidic condition; andadding an alkali to deposit the dissolved inorganic adsorbent while causing the inorganic adsorbent to adsorb ruthenium or the ruthenium compound.2. The method for collection according to claim 1 , wherein the inorganic adsorbent is at least one selected from the group consisting of a calcium phosphate compound claim 1 , a talcite compound claim 1 , and an amorphous aluminumsilicate.3. The method for collection according to claim 1 , wherein the inorganic adsorbent is used in an amount which is claim 1 , by mass claim 1 , 0.1 to 100 times the amount of ruthenium or the ruthenium compound contained in the aqueous solution.4. The method for collection according to claim 1 , wherein the aqueous solution containing ruthenium or the ruthenium compound contains a water-soluble salt claim 1 , a lower alcohol or an organic acid.5. The method for collection according to claim 1 , further comprising the step of performing claim 1 , in advance claim 1 , oxidation by an oxidizer and reduction by an alkali on the ...

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Номер записи: 39
19-12-2013 дата публикации

Method of Recovering Valuable Metals from Waste

Номер: US20130333522A1
Автор: Tetsuyuki Koizumi
Принадлежит: Individual

A method of recovering valuable metals from a waste including: heating the waste at a temperature and for a period of time such that a glass fiber does not melt but degrades to the extent that it becomes pulverizable, wherein conditions of the temperature and period of time are selected from a group consisting of a range of more than or equal to 750° C. and less than 800° C. for 30-40 minutes, a range of more than or equal to 800° C. and less than 900° C. for 10-40 minutes, a range of more than or equal to 900° C. and less than 950° C. for 10-30 minutes, a range of more than or equal to 950° C. and less than 1000° C. for 10-20 minutes, and a range of 1000° C. for about 10 minutes; removing the degraded glass fiber; and recovering valuable metals contained in the waste.

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Номер записи: 40
19-12-2013 дата публикации

Sustainable process for reclaiming precious metals and base metals from e-waste

Номер: US20130336857A1
Автор: Dinakar Gnanamgari, Fred Strickler, James Norman, John Warner, Laura Ingalls, Michael B. Korzenski, Ping Jiang, Ted Mendum
Принадлежит: Advanced Technology Materials Inc

Processes for recycling electronic components removed from printed wire boards, whereby precious metals and base metals are extracted from the electronic components using environmentally friendly compositions. At least gold, silver and copper ions can be extracted from the electronic components and reduced to their respective metals using the processes and compositions described herein.

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Номер записи: 41
02-01-2014 дата публикации

PRECIOUS METALS RECOVERY

Номер: US20140000413A1
Автор: DUNN Grenvil Marquis, Kolstad Jerry, Rapkoch Mark, Shuck Dave
Принадлежит:

Discloses a hydrometallurgical process and system for the recovery of precious metals; specifically palladium, rhodium, and platinum metals, at high purity and with limited waste and environmental fouling. 1. A method comprising:receiving a metals-containing stream containing at least one of silver, gold, copper, lead, cobalt, aluminum, calcium, sodium, bismuth, zinc, iron, nickel, ruthenium, sulfur, selenium, tellurium, and arsenic and at least one of rhodium, platinum, and palladium; and a first fraction comprising the at least one of silver, gold, copper, iron, lead, cobalt, aluminum, calcium, sodium, bismuth, zinc, iron, nickel, ruthenium, sulfur, selenium, tellurium, and arsenic; and', 'a second fraction comprising the at least one of rhodium, platinum, and palladium and being substantially free of silver, gold, copper, iron, lead, cobalt, aluminum, calcium, sodium, bismuth, zinc, iron, nickel, ruthenium, sulfur, selenium, tellurium, and arsenic., 'separating at least a portion of the metals-containing stream into2. The method of claim 1 , further comprising:recovering at least one of silver, gold, copper, iron, lead, cobalt, aluminum, calcium, sodium, bismuth, zinc, iron, nickel, ruthenium, sulfur, selenium, tellurium, and arsenic from the first fraction.3. The method of claim 1 , further comprising:baking at least a portion of the metals-containing stream to produce a baked stream;removing hydrochloric acid from the baked stream;adding water to the baked stream to provide a hydrated metals-containing stream; and,ramping the temperature of the hydrated metals-containing stream to a temperature between about 80° C. and about 31° C.4. The method of claim 1 , further comprising:baking at least a portion of the metals-containing stream to apparent dryness for a time less than about 50 hours.5. The method of claim 1 , further comprising:baking at least a portion of the metals-containing stream at a pressure between about 1 psia to about 15 psia.6. The method of ...

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Номер записи: 42
30-01-2014 дата публикации

REFINING OF PLATINUM GROUP METALS CONCENTRATES

Номер: US20140026713A1
Автор: Bezuidenhout Gert Adrian, Eksteen Jacobus Johannes
Принадлежит: WESTERN PLATINUM LTD

This invention relates to a process in which a Platinum Group Metal (PGM)-rich residue from a BMR (Base Metals Refinery) process is subjected to a high temperature roast to remove contaminants, typically volatile elements (for example Se, Te, As, S, Bi, Os) and obtain a roast product. The roast product is smelted with a flux to form a slag phase and an alloy phase, and to vaporize sulphates and heavy metals like Pb, Te, and remove stable oxide compounds such as Si02 and oxides of Fe, Ni, Co, Cu, Cr, Te, Bi to the slag phase. The alloy and the slag phase are separated, and the alloy phase is then melted and atomized with a gas or liquid atomization process to form fine alloy particles that can be dissolved in water and treated in a hydrometallurgical PMR (Precious Metals Refinery) process. 1. A process in which a Platinum Group Metal (PGM)-rich residue , wherein greater than 40% by mass of Precious Metals in the residue are Platinum Group Metals (PGMs) , containing less than 10% by weight base metals , is:subjected to a high temperature roast which includes an oxidative roast wherein the roasting temperature is above 500° C. and below 1000° C. to remove contaminants including Se, Te, As, S, Bi, Os and obtain a roast product; andthe roast product is smelted with a flux at a temperature of 1300° C. to 1600° C. to form a slag phase and an alloy phase, which are separated.2. The process as claimed in claim 1 , wherein the roasting temperature is from 600° C. to below 900° C.3. The process as claimed in claim 2 , wherein the roasting temperature is from 700° C. to 850° C.4. The process as claimed in claim 1 , wherein an oxidation agent is added to the oxidation roast.5. The process as claimed in claim 4 , wherein the oxidation agent is air.6. The process as claimed in claim 5 , wherein from 100 to 150 g of air is added per 100 g residue.7. The process as claimed in claim 6 , wherein from 130 to 150 g of air is added per 100 g residue.8. The process as claimed in claim 1 , ...

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Номер записи: 43
30-01-2014 дата публикации

Process for providing noble metal-containing mixtures for recovering noble metals

Номер: US20140026715A1
Автор: Klaus Zimmermann, Matthias Grehl, Oswald Kinz, Robert Hartmann
Принадлежит: Umicore AG and Co KG

The invention relates to the provision of noble metal-containing mixtures for a process for processing them by heating the mixture, preferably for processing them by means of an ashing process. This provision is characterized by the following measures: (a) moistening of the noble metal-containing mixture to be processed, (b) introduction of the moistened noble metal-containing mixture into at least one container which serves as diffusion barrier for water, and (c) introduction of the loaded container into a heat-resistant chamber together with at least one upper refractory mat. The noble metal-containing mixture is preferably moistened in the presence of a porous material and the chamber is closed by means of a heat-resistant covering. The invention further provides a processing process comprising the provision of noble metal-containing mixtures and also the heat-resistant chamber loaded with noble metal-containing mixtures itself. The process of the invention enables simple, clean recovery of noble metals in high yield from noble metal-containing mixtures.

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Номер записи: 44
06-02-2014 дата публикации

Co-Current and Counter Current Resin-In-Leach in Gold Leaching Processes

Номер: US20140035207A1
Автор: Chefai Samir, Choi Yeonuk
Принадлежит: BARRICK GOLD CORPORATION

A method and system are provided in which a gold and/or silver-collecting resin-in-leach circuit comprises both co-current and counter-current sections. 128-. (canceled)29. A system , comprising:a first set of tanks configured to flow co-currently an ion exchange resin, thiosulfate, and a gold and/or silver-containing material, the first set of tanks comprising a first input for a first inputted ion exchange resin and a first output for a first gold and/or silver-loaded resin; anda second set of tanks configured to receive the thiosulfate and gold and/or silver-containing material from the first set of tanks and to flow counter-currently a second inputted ion exchange resin on the one hand and the thiosulfate and gold and/or silver-containing material on the other, the second set of tanks comprising a second input for the second inputted ion exchange resin and a second output for a second gold and/or silver-loaded resin.30. The system of claim 29 , wherein the first and second inputted ion exchange resins are different from one another claim 29 , and the first and second gold and/or silver-loaded resins are different from one another.31. The system of claim 29 , wherein at least a part of the second gold and/or silver-loaded resin is introduced into the input as part of the first inputted ion exchange resin claim 29 , and wherein the first and second inputs are different claim 29 , and the first and second outputs are different.32. The system of claim 29 , wherein the first and second sets of tanks do not share a common resin-in-leach or resin-in-pulp tank and wherein the gold and/or silver-containing material flows first through the first set of tanks and then through the second set of tanks.33. The system of claim 32 , wherein at least most of the gold and/or silver-loaded resin in the first set of tanks is removed from the first set of tanks and at least most of the gold and/or silver-loaded resin in the second set of tanks is removed from the second set of tanks ...

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Номер записи: 45
13-02-2014 дата публикации

Process of Gold and Copper Recovery From Mixed Oxide - Sulfide Copper Ores

Номер: US20140044618A1
Автор: Ostrea Antonio M.
Принадлежит:

The present invention relates to a process of gold and copper recovery from gold-containing copper ores obtained from mixed oxide-sulfide copper ore bodies by a series of flotation stages. More specifically, the present invention relates to a process of gold and copper recovery whereby gold-containing ores obtained from mixed oxide-sulfide copper ore bodies, and/or copper flotation by-products thereof, are subjected to at least one flotation step following a dewatering step. In particular, it recovers copper and gold from the oxidized zone of porphyry and other mixed ore deposits. Likewise, the present process allows recovery of copper and gold from the tailings and scavenger concentrates which, in conventional process are no longer viable for further treatment. 1) A process for gold and copper recovery from mixed oxide-sulfide copper ores comprising the steps of:crushing, screening and grinding the ores to appropriate size;subjecting the ground ores to copper flotation, using xanthate as collector, and a suitable frother at a pH range of about 7 to about 8 to obtain a rougher concentrate, a scavenger concentrate and a copper by product,said rougher concentrate undergoes further grinding and flotation to obtain final copper concentrate and cleaner tails;said scavenger concentrate undergoes further grinding before recycling to copper flotation stage; and{'sub': 2', '4, 'said copper by-products undergo further processing by dewatering, then flotation at a pH range of about 5 to about 7 using a fatty acid-xanthate reagent combination as collector or promoter of the gold and a suitable frother to obtain rougher concentrate, scavenger concentrate and scavenger tails, subjecting said rougher concentrate to regrinding and cleaner flotation to separate the gold concentrate from the tailings, leaching the copper-gold concentrate with HSOat a pH of about 1 to about 2 until leaching is completed within 2 to 5 hours followed by liquid-solid separation of the acid leach liquor ...

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Номер записи: 46
20-02-2014 дата публикации

METHOD FOR THIOSULFATE LEACHING OF PRECIOUS METAL-CONTAINING MATERIALS

Номер: US20140047954A1
Автор: Fleming Christopher Andrew, Hackl Ralph Peter, Ji Jinxing, West-Sells Paul George
Принадлежит: PLACER DOME TECHNICAL SERVICES LTD.

Processes are provided for recovering precious metals from refractory materials using thiosulfate lixiviants. The processes can employ lixiviants that include at most only small amounts of copper and/or ammonia and operate at a relatively low pH, reduction of polythionates, inert atmospheres to control polythionate production, and electrolytic solutions which provide relatively high rates of precious metal recovery. 1106-. (canceled)107. A method , comprising:(a) contacting a precious metal-containing material with a thiosulfate lixiviant to dissolve the precious metal and form a pregnant thiosulfate leach solution containing the dissolved precious metal and a polythionate;(b) contacting the pregnant thiosulfate leach solution with at least one of a sulfite-containing reagent and a sulfide-containing reagent to convert at least most of the polythionates into thiosulfate;(c) thereafter contacting the pregnant leach solution with an extraction agent to collect at least most of the dissolved precious metal on the extraction agent and form a barren thiosulfate leach solution for recycle to step (a); and(d) recovering the collected precious metal from the precious metal loaded extraction agent.108. The method of claim 107 , further comprising claim 107 , after step (b) and before step (c):conditioning the pregnant leach solution in an oxidizing atmosphere to redissolve any precipitated precious metal sulfides.109. The method of claim 107 , wherein polythionates compete with dissolved precious metal complexes for loading on the extraction agent.110. The method of claim 108 , wherein the at least one of a sulfite-containing reductant and sulfide-containing reductant is the sulfite-containing reductant and wherein the sulfite-containing reductant is at least one of a metabisulfite and sulfur dioxide.111. The method of claim 108 , wherein the at least one of a sulfite-containing reductant and sulfide-containing reductant is the sulfide-containing reductant and wherein the ...

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Номер записи: 47
27-02-2014 дата публикации

Method of recovering pgm

Номер: US20140053687A1
Автор: Katsunori Yamaguchi, Minoru Kawasaki, Yuzuru Nakamura
Принадлежит: Dowa Metals and Mining Co Ltd

A method of suppressing a distribution of PGM into a Cu2O slag in an oxidation smelting of a method of recovering PGM, is provided, including: carrying out reduction smelting to a treatment target member containing PGM, Cu and/or Cu 2 O, and flux, to thereby generate a molten slag and a Cu alloy containing PGM; and oxidizing and melting the Cu alloy containing the PGM, to thereby generate a Cu 2 O slag containing PGM and the Cu alloy, with more concentrated PGM concentration than the Cu alloy containing the PGM, wherein when carrying out the oxidation smelting, acidic oxide or basic oxide is added.

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Номер записи: 48
27-02-2014 дата публикации

NANO WIRE AND METHOD FOR MANUFACTURING THE SAME

Номер: US20140054516A1
Автор: Choi Joon Rak, Choi Won Jong, Jeong Woo Ju, Lee Sang Hoon, Lee Yong Sang, Moon Jong Woon, Park Soung Kyu, Seo Hyeok Soo
Принадлежит:

A method for manufacturing a nanowire is provided. A solvent is heated. A catalyst is added to the solvent. A metal compound is added to the solvent to form a metal nanowire. The metal nanowire is refined. In the refining of the metal nanowire, the catalyst and a refinement material to converting an insoluble material generated by the catalyst into a soluble material may be added to the solvent. The catalyst may include NaCl and at least one selected from the group consisting of Mg, K, Zn, Fe, se, Mn, P, Br and I. 1. A method for manufacturing a nanowire , the method comprising:heating a solvent;adding a catalyst to the solvent;adding a metal compound to the solvent to form a metal nanowire; andrefining the metal nanowire,wherein in the refining of the metal nanowire, the catalyst and a refining material to convert an insoluble material generated by the catalyst into a soluble material is added to the solvent.2. The method of claim 1 , wherein the refining material comprises at least one selected from the group consisting of KCN claim 1 , NaCN claim 1 , HNO claim 1 , and NHOH.3. The method of claim 1 , wherein the catalyst comprises at least one selected from the group consisting of AgCl claim 1 , KBr claim 1 , KI claim 1 , CuCl claim 1 , PtCl claim 1 , HPtCl claim 1 , HPtCl claim 1 , AuCl claim 1 , AuCl claim 1 , HAuCland HAuCl.4. The method of claim 1 , wherein the refining material is added to the solvent in a state that the refining material is dissolved in distilled water.5. The method of claim 1 , wherein the refining material is contained by 1.5 equivalents by weight to 3 equivalents by weight with respect to number of moles of the catalyst.6. The method of claim 1 , wherein the metal nanowire comprises silver (Ag).7. The method of claim 1 , after the heating of the solvent claim 1 , further comprising adding a capping agent to the solvent claim 1 , and after the adding of the metal compound to the solvent claim 1 , further comprising additionally adding a ...

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Номер записи: 49
27-02-2014 дата публикации

Device and Method for the Thermal Treatment of Fluorine-Containing and Noble Metal-Containing Products

Номер: US20140056786A1
Автор: MEYER Horst, Romero Jose Manuel, Voß Steffen
Принадлежит: Heraeus Precious Metals GmbH & Co. KG

The present invention relates to an ashing plant for enriching noble metals from fluorine-containing materials, comprising 1. Ashing plant for enriching noble metals from fluorine-containing materials , comprising{'b': 1', '1, 'a thermal treatment chamber () having a refractory insulating lining on the inside of the thermal treatment chamber (), and'}an exhaust gas cleaning system,whereby the insulating lining is resistant to hydrofluoric acid and{'b': 3', '4', '5, 'the exhaust gas cleaning system comprises at least one or more acid scrubber(s) (, ) and at least one alkaline scrubber ().'}22. The ashing plant according to claim 1 , wherein the exhaust gas cleaning system further comprises at least one or more thermal after-incineration chambers ().32. The ashing plant according to claim 2 , wherein the inside of the at least one thermal after-incineration chamber () is provided with a hydrofluoric acid-resistant refractory insulating lining.4616. The ashing plant according to wherein the plant further comprising an exhaust gas conduit () for guiding the exhaust gases out of the thermal treatment chamber () and in that the inside of said exhaust gas conduit () is provided with a hydrofluoric acid-resistant refractory insulating lining.5. The ashing plant according to wherein the refractory insulating lining has an aluminium oxide (AlO) content of 85% by weight or more.6126. The ashing plant according to wherein the thermal treatment chamber () claim 1 , after-incineration chamber () claim 1 , and exhaust gas conduit () comprise different insulating lining(s).7126. The ashing plant according to wherein thermal treatment chamber () claim 1 , after-incineration chamber () and/or exhaust gas conduit () further comprise an external lining.8. The ashing plant according to claim 7 , wherein the external lining is a mineral fibre.93. The ashing plant according to wherein the exhaust gas cleaning system comprises at least one scrubber made of graphite () with a double-walled ...

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Номер записи: 50
10-04-2014 дата публикации

ALKALINE AND ACID PRESSURE OXIDATION OF PRECIOUS METAL-CONTAINING MATERIALS

Номер: US20140096649A1
Автор: Chung-Yeh Tsu Wilson, Langhans John William
Принадлежит: BARRICK GOLD CORPORATION

The present invention is directed to a precious metal recovery process in which an acid sulfidic feed material is subjected to acid pressure oxidation and an alkaline sulfidic feed material is subjected to alkaline pressure oxidation, with the discharge slurries from the pressure oxidation processes being combined to reduce neutralization requirements prior to precious metal recovery. 124-. (canceled)25. A method , comprising:receiving an aqueous leach solution comprising a leaching agent;passing the aqueous leach solution through a membrane filter to form an aqueous retentate comprising at least most of the leaching agent and an aqueous permeate comprising some of the leaching agent;recycling the aqueous retentate to a leaching step;destroying at least most of the leaching agent in the aqueous permeate to form an aqueous recycle stream substantially free of leaching agent; andrecycling the aqueous recycle stream to a unit operation upstream of the leaching step.26. The method of claim 25 , wherein the aqueous leach solution comprises a precious metal claim 25 , wherein the leaching agent is at least one of cyanide claim 25 , thiosulfate claim 25 , and thiourea claim 25 , and wherein the membrane filter is at least one of a semi-permeable reverse osmosis filter claim 25 , a nanofilter claim 25 , an ultrafilter claim 25 , and a microfilter.27. The method of claim 26 , wherein the aqueous leach solution is passed through only a single stage of membrane filtration.28. The method of claim 26 , wherein the leaching agent is destroyed by oxidation and further comprising before recycling of the aqueous recycle stream:contacting the aqueous recycle stream with a reductant to react with at least most of any excess oxidant.29. The method of claim 25 , wherein the leaching step comprises the substeps:pressure oxidizing, at a pH of less than pH 6.5, an acid generating feed material comprising a valuable metal and sulfide sulfur to form an acid discharge slurry comprising ...

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Номер записи: 51
10-04-2014 дата публикации

PREPARATION METHOD OF SILVER NANO-STRUCTURE FOR SURFACE ENHANCED, RAMAN SCATTERING SUBSTRATE AND SILVER NANO-STRUCTURE THEREBY

Номер: US20140099513A1
Автор: EOM So Young, KIM Hong Lae, KWON Chan Ho
Принадлежит: KANGWON NATIONAL UNIVERSITY-INDUSTRY COOPERATION FOUNDATION

A preparation method of silver nanostructure for use as substrate of surface-enhanced Raman scattering (SERS), which can ensure the ‘hot spot’, which provides the considerably very intense electromagnetic field in which the silver nano-structures have uniform average size and very strong forms of particles, by characterizing a variety of conditions such as, for example, concentration of AgNOand reductant, reaction temperature, stirring velocity, single dropwise addition quantity, dropwise addition rate, or total dropwise addition quantity, which were unpredictable in the conventional silver nanoparticle preparation method using AgNOaqueous solution and NaBHreductant, so that the preparation method can be advantageously applied for the mass production of silver nano-structures for use as substrate of SERS because the method can provide multimer form with enhanced SERS signals and reproducibility, and also ability to selectively control the particle size. 1. A preparation method of silver nano-structures for use as substrate of surface-enhanced Raman scattering (SERS) , comprising steps of:{'sub': '4', 'cooling NaBHdown to 0-5° C. (step 1);'}{'sub': '4', 'preparing reductant solution by placing NaBHcooled at step 1 in a flask maintained at 0-5° C. or room temperature, and stirring the same (step 2);'}{'sub': '3', 'obtaining reaction solution by dropwise-adding room-temperature AgNOto the reductant solution prepared at step 2 until end point (step 3); and'}{'sub': '4', 'ending the reaction by adding NaBHprepared at step 1 into the reaction solution obtained at step 1.'}2. The preparation method as set forth in claim 1 , comprising steps of:{'sub': '4', 'sup': −3', '−3, 'cooling NaBHat concentration between 1.0×10M and 3.0×10M down to 0-5° C. (step 1);'}{'sub': '4', 'preparing reductant solution by placing NaBHcooled to 0-5° C. at step in a flask maintained at 0-5° C., and stirring the same at 1000-2000 rpm (step 2);'}{'sub': '3', 'sup': −3', '−3, 'obtaining reaction ...

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Номер записи: 52
07-01-2016 дата публикации

REDUCING AGENTS FOR SILVER MORPHOLOGY CONTROL

Номер: US20160001370A1
Автор: Whitcomb David R.
Принадлежит:

A method comprising providing at least one reducing agent comprising at least one phenol group, the at least one reducing agent not also comprising a halogen atom, and reducing at least one silver ion to at least one silver nanowire in a reaction mixture comprising the at least one reducing agent. Exemplary reducing agents are 3,4-dihydroxybenzotriazole, 2,2′-isobutylidene-bis-(4,6-dimethyl-phenol), and tannic acid. 1. A method comprising:providing at least one reducing agent comprising at least one phenol group, the at least one reducing agent not also comprising a halogen atom, andreducing at least one silver ion to at least one silver nanowire in a reaction mixture comprising the at least one reducing agent.2. The method according to claim 1 , wherein the at least one reducing agent comprises at least one of 3 claim 1 ,4-dihydroxybenzotriazole claim 1 , 2 claim 1 ,2′-isobutylidene-bis-(4 claim 1 ,6-dimethyl-phenol) claim 1 , and tannic acid.3. The method according to claim 1 , wherein the at least one reducing agent is selected from a group consisting of 3 claim 1 ,4-dihydroxybenzotriazole claim 1 , 2 claim 1 ,2′-isobutylidene-bis-(4 claim 1 ,6-dimethyl-phenol) claim 1 , and tannic acid.4. The method according to claim 1 , wherein the reaction mixture further comprises at least one polyol.5. The method according to claim 4 , wherein the at least one polyol comprises propylene glycol.6. The method according to claim 1 , wherein the reaction mixture further comprises at least one protecting agent.7. The method according to claim 6 , wherein the at least one protecting agent comprises polyvinyl pyrrolidone.8. The method according to claim 1 , wherein the reaction mixture further comprises at least one halide compound capable of forming a halide ion.9. The method according to claim 1 , wherein the reaction mixture further comprises at least one halide ion.10. The method according to claim 1 , wherein the reaction mixture further comprises at least one polar aprotic ...

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Номер записи: 53
05-01-2017 дата публикации

Process for the production of a pgm-enriched alloy

Номер: US20170002441A1
Автор: Brian Peters, Christoph Rohlich, Felix STOFFNER, Holger Winkler, Jimmy Taylor, Norbert Ritschel, Steffen Voss, Todd ENGLAND
Принадлежит: Heraeus Deutschland GmbH and Co KG, Heraeus Precious Metals North America LLC

A process for production of a PGM (platinum group metal)-enriched alloy containing iron and PGM(s) (platinum, palladium and/or rhodium) includes steps of: (1) providing a sulfur-free PGM collector alloy, (2) providing a copper- and sulfur-free material capable of forming a molten slag-type composition including silicon dioxide and magnesium and/or calcium oxide, (3) melting the PGM collector alloy and slag-forming material within a converter until a multi-phase system of a lower high-density molten mass of PGM collector alloy and an upper low-density molten mass of slag-type composition has formed, (4) contacting an oxidizing gas with the lower high-density molten mass of step (3) until conversion of the PGM collector alloy into a PGM-enriched alloy, (5) separating an upper molten slag formed in step (4) from the PGM-enriched alloy by difference in density, (6) allowing the separated molten masses to cool down and solidify, and (7) collecting the solidified PGM-enriched alloy.

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Номер записи: 54
04-01-2018 дата публикации

Multilayer films and related uses thereof

Номер: US20180002780A1
Автор: Jorge C. Gomes, Maximiliano ZANETTI, Miguel Molano Niampira
Принадлежит: Dow Global Technologies LLC, Dow Quimica de Colombia SA, PBBPolisur SRL

Embodiments disclosed herein include multilayer films that have at least two layers. More particularly, disclosed in embodiments herein are multilayer films that include at least a first layer and a second layer, wherein the first layer includes at least one polyethylene polymer, wherein the second layer includes at least one water-soluble polymer, wherein the second layer is insoluble in water at a temperature of less than 20° C., wherein the second layer is soluble in water at a temperature of 20° C. or greater, and wherein the first layer has one or more openings through the first layer to expose the second layer. Also disclosed herein are methods of using such multilayer films for extracting metal from metal ore.

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Номер записи: 55
02-01-2020 дата публикации

Process for Recovering Precious Metals from Clay-Containing Ores

Номер: US20200002783A1
Автор: III Charles F., JR. Charles F., McKiernan John W., Palmer
Принадлежит:

A solution for leaching metals from clay containing ore and a method of leaching ore is described. The solution comprises a cyanide; a wetting agent; and a clay stabilizing polymer. 126-. (canceled)27. A method for heap leaching of metals from clay containing ore comprising:forming a heap of ore on a leach bed; cyanide;', 'a wetting agent; and', 'a clay stabilizing polymer;, 'percolating a leach solution through said heap wherein said leach solution comprisesthereby forming a pregnant leach solution comprising said precious metal; andremoving said precious metal from said pregnant leach solution.28. The method for heap leaching of metals from clay containing ore of wherein said metal is selected from the group consisting of gold claim 27 , silver claim 27 , copper and uranium.29. The method for heap leaching of metals from clay containing ore of wherein said leach solution has a pH of at least 8 to no more than 11.30. The method for heap leaching of metals from clay containing ore of wherein said leach solution has a pH of at least 9.5 to no more than 10.5.31. The method for heap leaching of metals from clay containing ore of wherein said leach solution comprises at least 50 ppm cyanide to no more than 1000 ppm cyanide.32. The method for heap leaching of metals from clay containing ore of wherein said leach solution comprises at least 200 ppm cyanide to no more than 800 ppm cyanide.33. The method for heap leaching of metals from clay containing ore of wherein said clay stabilizing polymer is selected from the group consisting of polyalkylene oxide copolymer; propoxylated glycols; polyamine copolymer comprising dicyandiamide claim 27 , formaldehyde and ammonia; polyvinyl alcohol; partially hydrolyzed polyvinyl acetate; polyacrylamide; quaternary amines and particularly tetramethylammonium salts; carboxymethyl cellulose; methacrylate copolymers; hydroxyaldehydes; hydroxyketones; and copolymers of anionic or cationic monomers.34. The method for heap leaching of metals ...

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Номер записи: 56
11-01-2018 дата публикации

METHOD FOR NANOPARTICLE PURIFICATION

Номер: US20180009038A1
Автор: Ikeda Yasuyuki, Maruko Tomohiro, TAKEUCHI Masashi
Принадлежит:

A method for purifying nanoparticles by which a large amount of nanoparticles can be obtained in a safe manner and in a short time as compared to a conventional method for purifying nanoparticles. A method for purifying nanoparticles by which nanoparticles are purified from a dispersion liquid in which nanoparticles are dispersed in a solvent A used in synthesis of the nanoparticles, the method including: a mixing step of mixing the dispersion liquid, a solvent B that is miscible with the solvent A, and a solvent C that forms two phases together with the solvent B; a concentrating step of concentrating the nanoparticles in a phase of the solvent C; a washing step of forming a third phase containing the nanoparticles in the phase of the solvent C; and a purifying step of extracting the third phase and removing the solvent C from the third phase. 1. A method for purifying nanoparticles by which nanoparticles are purified from a dispersion liquid in which nanoparticles are dispersed in a solvent A used in synthesis of the nanoparticles , the method comprising:a mixing step of mixing the dispersion liquid, a solvent B that is miscible with the solvent A, and a solvent C that forms two phases together with the solvent B;a concentrating step of concentrating the nanoparticles in a phase of the solvent C;a washing step of forming a third phase containing the nanoparticles in the phase of the solvent C; anda purifying step of extracting the third phase and removing the solvent C from the third phase.2123aaa. The method for purifying nanoparticles according to claim 1 , wherein the washing step is a step of forming the third phase by repeating a washing cycle claim 1 , which includes at least a step of extracting the phase of the solvent C claim 1 , a step of shaking the extracted phase of the solvent C to form an concentrated phase containing the nanoparticles at a high concentration claim 1 , and a step of extracting the concentrated phase and mixing the concentrated phase ...

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Номер записи: 57
09-01-2020 дата публикации

PROCESS AND APPARATUS FOR ROASTING OF METAL SULFIDE CONCENTRATES AND/OR RESIDUES

Номер: US20200010924A1
Автор: CHARITOS Alexandros, GÜNTNER Jochen, HAMMERSCHMIDT JÖRG
Принадлежит: OUTOTEC (FINLAND) OY

A process for roasting of metal concentrate wherein concentrate particles are fed into a roaster where they are thermally treated at a temperature in the range of 500 and 1200° C. in a fluidized bed to form a calcine. At least parts of the calcine are withdrawn from the roaster together with a gas stream as a solid fraction. Concentrate particles with a diameter at least 50% smaller than the average diameter of the concentrate particles are separated as small particles and/or particles from the gas-solid-fraction are separated in at least one step as small calcine particles and/or particles are gained in another hydrometallurgical step as other particles. Defined particles are pelletized, whereby at least 80% of the pellets feature a diameter of at least 80% of the concentrate particles average diameter. The pellets are fed into the roaster. 1. A process for roasting of metal concentrate , wherein concentrate particles are fed into a roaster where they are thermally treated at a temperature in the range of 500 and 1200° C. in a fluidized bed to form a calcine , at least parts of the calcine are withdrawn from the roaster together with a gas stream as a solid fraction , particles are gained in another hydrometallurgical step as other particles , at least parts of the other particles are pelletized , whereby at least 80% of the pellets feature a diameter of at least 80% of the concentrate particles average diameter and the pellets are fed into the roaster so that the metal concentrate contains at least 45 wt.-% zinc , whereby the concentrate particles' average diameter is between 5 and 40 μm , the metal concentrate contains at least 60 wt.-% pyrite , whereby the concentrate particles' average diameter is between 5 and 90 pm , the metal concentrate contains at least 2 g/t gold , whereby the concentrate particles' average diameter is between 5 and 100 μm the metal concentrate contains at least 15 wt.-% copper , whereby the concentrate particles' average diameter is ...

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Номер записи: 58
25-01-2018 дата публикации

Process for the Recovery of Gold from Anode Slimes

Номер: US20180021743A1
Автор: Kim Daniel, WANG Shijie
Принадлежит:

An apparatus for the recovery of gold from a gold-bearing aqueous filtrate, the process comprising the steps of: 13-. (canceled)4. A mixing assembly comprising:(A) A vertical tank having a central vertical axis and comprising a side wall, a bottom inlet and an upper outlet; (1) A shaft having a top end and a bottom end;', '(2) A variable frequency drive (VFD) motor attached to or near the top of the shaft in a manner to rotate the shaft when the motor is activated;', '(3) An axial flow impeller disposed on the shaft and beneath the VFD motor;', '(4) A radial flow plate disposed on the shaft and beneath the axial flow impeller; and', '(5) A radial flow impeller disposed on the shaft and beneath the radial flow plate, the radial flow impeller not extending beyond the radial flow plate;', 'the mixing device fitted into the tank and along the central vertical axis of the tank such that the radial flow impeller is located closest to the bottom inlet and the axial flow impeller is located closest to the upper outlet;, '(B) A mixing device comprising(C) A baffle system attached to the side wall of the tank; and (1) A feed apparatus comprising top and bottom ends and a divider extending from the top end to the bottom end to divide the feed apparatus into first and second chambers, the top end of each chamber in fluid communication with the bottom inlet of the tank but neither chamber in fluid communication with the other chamber;', '(2) A first feed pipe connected to and in fluid communication with the bottom end of the first chamber; and', '(3) A second feed pipe connected to and in fluid communication with the bottom end of the second chamber., '(D) A liquid feed assembly connected to and in fluid communication with the bottom inlet of the tank, the liquid feed assembly comprising5. The mixing assembly of in which the baffle system comprises two or more panels.6. The mixing assembly of in which the radial flow plate is affixed to the radial flow impeller.7. The mixing ...

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Номер записи: 59
28-01-2016 дата публикации

Use of Cationic Surfactants In the Cyanidation of Refractory Carbonaceous Ores for Recovery of Metals

Номер: US20160024613A1
Автор: Choi Yeonuk, Jiang Junhua, Zhou Qiong
Принадлежит: AKZO NOBEL CHEMICALS INTERNATIONAL B.V.

A process for recovery of precious metals from ores or concentrates containing refractory carbonaceous material by cyanidation leaching. The process involves addition to the ores or concentrates at least one cationic surfactant before or during the addition of cyanide-containing solution. The agent enables the recovery of precious metals by cyanidation from high preg-robbing carbonaceous ores and improves the recovery of precious metals by cyanidation from medium to low preg-robbing carbonaceous ores. The agent also prevents froth and foaming formation during the cyanidation process. 2. The method of claim 1 , further comprising the step of adding a cyanide-containing solution to the ore or concentrate.3. The method of claim 1 , further comprising the step of roasting the ore or concentrate prior to the treating step.4. The method of claim 1 , wherein the ore or concentrate is in the form of an aqueous ore slurry with particle size 80% passing 30 mesh or finer and a pulp density of 5% to 80%.5. The method of claim 1 , further comprising the step of oxidizing the ore or concentrate prior to the treating step.6. The method of claim 1 , wherein the alkyl amine is animal based or vegetable based fatty alkyl amine.7. The method of claim 1 , wherein the alkyl amine is alkoxylated.8. The method of claim 1 , wherein the cationic surfactant is selected from the group consisting of a salt of the alkyl amine claim 1 , an alkyl amine derivative claim 1 , and combinations thereof.9. The method of claim 1 , wherein the cationic surfactant is an alkyl quaternary ammonium salt.10. The method of claim 1 , wherein the cationic surfactant is an alkyl amine oxide.11. The method of claim 1 , wherein the cationic surfactant is selected from the group consisting of an alkyl amide claim 1 , amidoamine claim 1 , imidazoline claim 1 , and combinations thereof.12. The method of claim 1 , wherein the ore or concentrate is treated with the cationic surfactant and at least one other surfactant ...

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Номер записи: 60
24-04-2014 дата публикации

Process for the Recovery of Gold from Anode Slimes

Номер: US20140109725A1
Автор: Kim Daniel, WANG Shijie
Принадлежит: KENNECOTT UTAH COPPER LLC

A process for the recovery of gold from a gold-bearing aqueous filtrate, the process comprising the steps of: 2. The apparatus of in which within each circuit the mixing assembly of one stage is adjacent to the phase separation tank of another stage.3. The apparatus of in which the phase separation tank of the second stage of the solvent extraction circuit is adjacent to the mixing assembly of the first stage of the aqueous acid scrub circuit.4. A process for the recovery of gold from a gold-bearing (Au-bearing) filtrate claim 2 , the process comprising the steps of:(A) Contacting the aqueous Au-bearing filtrate with dibutyl carbitol (DBC) in a two-stage solvent extraction circuit to remove the gold from the aqueous Au-bearing filtrate into the DBC to form a gold-loaded DBC, the contacting performed in a manner such that the aqueous Au-bearing filtrate is contacted in the first stage of the solvent extraction circuit with DBC from the second stage of the solvent extraction circuit and fresh DBC is contacted in the second stage of the solvent extraction circuit with the aqueous Au-bearing filtrate from the first stage of the solvent extraction circuit; and(B) Contacting the gold-loaded DBC from the second stage of the solvent extraction circuit with an aqueous acid scrub of greater than zero (>0) to 5 N hydrochloric acid (HCl) in a four-stage acid scrub circuit to remove impurities from the gold-loaded DBC into the aqueous acid scrub to form an impurity-loaded aqueous scrub solution and an impurity-depleted DBC; the contacting conducted in a manner such that the gold-loaded DBC from the second stage of the solvent extraction circuit is contacted in the first stage of the aqueous acid scrub circuit with aqueous acid scrub from the third stage of the aqueous acid scrub circuit, and the gold-loaded DBC from the third stage of the aqueous acid scrub is contacted with fresh aqueous acid scrub in the fourth stage of the aqueous acid scrub circuit.5. The process of in which ...

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Номер записи: 61
29-01-2015 дата публикации

METHOD FOR PRODUCING MICROPARTICLES

Номер: US20150030760A1
Автор: Enomura Masakazu
Принадлежит: M. TECHNIQUE CO., LTD.

The invention addresses the problem of providing a method for producing microparticles. Provided is a method for producing microparticles. For the first process, seed microparticles are separated in a thin film fluid that forms between at least two processing surfaces, which are disposed facing each other, which can approach or separate from each other and at least one of which rotates relative to the other, and the fluid comprising the separated seed microparticles is discharged as a discharge fluid. Subsequently, for the second process, the separated seed microparticles are grown in the discharged discharge fluid to obtain the intended microparticles. Uniform and homogeneous micropartcles are obtained as a result of the microparticle producing method comprising the two process. 1. A method for producing a microparticle wherein the method comprises at least two steps as following:(I) a first step of separating a seed microparticle in a thin film fluid formed between at least two processing surfaces which are disposed in a position they are faced with each other so as to be able to approach to and separate from each other, at least one of which rotates relative to the other, whereby discharging a fluid which contains the seed microparticle thus separated as a discharge fluid, and(II) a second step of growing the separated seed microparticle in the discharge fluid whereby obtaining a prescribed microparticle.2. The method for producing a microparticle according to wherein the prescribed microparticle is a crystalline microparticle and the seed microparticle is a crystalline microparticle.3. The method for producing a microparticle according to wherein the prescribed microparticle is a crystalline microparticle and the seed microparticle is a crystal nucleus.4. A method for producing a microparticle whereinthe method is to mix a raw material fluid in which at least one substance to be separated is dissolved or molecular dispersed in a solvent with a separating fluid ...

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Номер записи: 62
04-02-2016 дата публикации

METHODS FOR TREATING CARBON MATERIALS INCLUDING CARBONACEOUS ORES

Номер: US20160032420A1
Автор: Neylon Richard
Принадлежит:

Methods described herein generally relate to the treatment of carbonaceous materials with ozone to facilitate the subsequent recovery of metal species (e.g., precious metals) from the carbonaceous material. In some cases, the method may involve exposure of a carbonaceous material to a relatively low amount of ozone. In some cases, the carbonaceous material may be subjected to oxidizing conditions, e.g. by autoclaving or bio-oxidation, prior to ozone treatment. Such embodiments may allow for more simplified and cost-effective methods for metal recovery. 1. A method , comprising:exposing a carbonaceous feed material comprising at least one metal species to oxidizing conditions selected to produce an oxidized carbonaceous material, wherein the preg-robbing index of the oxidized carbonaceous material is substantially the same as the preg-robbing index of the carbonaceous feed material; andtreating the oxidized carbonaceous material with ozone to produce an ozone-treated carbonaceous material, wherein the preg-robbing index of the ozone-treated carbonaceous material is lower than the preg-robbing index of the oxidized carbonaceous material.2. A method , comprising:exposing a carbonaceous feed material comprising a carbonaceous preg-robbing component and at least one metal species to oxidizing conditions selected to produce an oxidized carbonaceous material, wherein the amount of the carbonaceous preg-robbing component of the oxidized carbonaceous material is substantially the same as the amount of the carbonaceous preg-robbing component of the carbonaceous feed material; andtreating the oxidized carbonaceous material with ozone to produce an ozone-treated carbonaceous material, wherein the amount of the carbonaceous preg-robbing component of the ozone-treated carbonaceous material is lower than the amount of the carbonaceous preg-robbing component of the oxidized carbonaceous material.3. A method as in any preceding claim , further comprising:treating the ozone-treated ...

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Номер записи: 63
01-02-2018 дата публикации

METHOD FOR PRE-TREATMENT OF GOLD-BEARING OXIDE ORES

Номер: US20180030572A1
Автор: Choi Yeonuk, Gharelar Ahmad Ghahremaninezhad
Принадлежит:

The disclosure relates to pre-treatment of precious metal-bearing oxide ores, prior to precious metal leaching by thiosulfate. The process comprises mixing oxide ore in oxygenated water in the presence of a carbon-based material (e.g., activated carbon or other type of carbon). The carbon-based material can be separated from the ore slurry, and, the gold is thereafter leached by a thiosulfate lixiviant. 1. A system , comprising:a reactor configured for mixing a precious metal material, activated carbon and an oxidant to form a pre-treated slurry;a separator for separating the activated carbon from the pre-treated slurry to form a carbon-depleted slurry; anda leaching system configured to contact, after separating the activated carbon from the pre-treated slurry, a lixivant with the carbon-depleted slurry, wherein the reactor, separator and leaching system are interconnected and in fluid-communication with one another.2. The system of claim 1 , further comprising:an oxidant introduction system interconnected and in fluid communication with the reactor for introducing the oxidant to the reactor and contacting the oxidant with the precious metal material and the activated carbon.3. The system of claim 2 , wherein the oxidant introduction system is a sparging system.4. The system of claim 2 , wherein the oxidant introduction system is interconnected and fluid communication with a source of the oxidant claim 2 , wherein the oxidant comprises one of air claim 2 , molecular oxygen claim 2 , oxygen-enriched air claim 2 , ozone claim 2 , a peroxygen compound claim 2 , hydrogen peroxide claim 2 , and industrially-pure oxygen.5. The system of claim 4 , wherein sparging system is operated at a rate of from about 0.05 to about 5 L O/L pre-treated slurry/minute.6. The system of claim 4 , wherein sparging system is operated at a rate of sparging of from about 0.1 to about 2.5 L O/L pre-treated slurry/minute.7. The system of claim 1 , wherein the reactor comprises one of a tank ...

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Номер записи: 64
30-01-2020 дата публикации

Method for platinum group metals recovery from spent catalysts

Номер: US20200032370A1
Автор: Igor Lubomirsky, Valery Kaplan
Принадлежит: Yeda Research and Development Co Ltd

A method for recovery of platinum group metals from a spent catalyst is described. The method includes crushing the spent catalyst to obtain a catalyst particulate material including particles having a predetermined grain size. The method includes subjecting the catalyst particulate material to a chlorinating treatment in the reaction zone at a predetermined temperature for a predetermined time period by putting the catalyst particulate material in contact with the chlorine containing gas. The method also includes applying an electromagnetic field to the chlorine-containing gas in the reaction zone to provide ionization of chlorine; thereby to cause a chemical reaction between platinum group metals and chlorine ions and provide a volatile platinum group metal-containing chloride product in the reaction zone. Following this, the volatile platinum group metal-containing chloride product is cooled to convert the product into solid phase platinum group metal-containing materials.

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Номер записи: 65
09-02-2017 дата публикации

UTILIZATION OF TEMPERATURE HEAT ADSORPTION SKIN TEMPERATURE AS SCALE CONTROL REAGENT DRIVER

Номер: US20170037493A1
Автор: Arndt Rolf, Coleman Kim R.
Принадлежит:

The invention provides methods, compositions, and apparatuses for preventing the formation of scale in heap leach process solution distribution systems comprised of piping, spray nozzels, or emitter tubes. Solution distribution system components often become fouled by scale because of local hot spots more prone to form scale than other locations along the systems length. Positioning sensors that detect periods of high temperature stress and adjusting scale control reagent dosage to send the right amount to inhibit hot spot deposition allows for the control of scale without using wasteful excessive amounts of scale control reagents. This can vastly improve scale control performance under high temperature stress conditions while minimizing scale control reagent waste under less severe stress conditions to reduce the total operating cost of running heap leach mining operations which depend upon well-functioning solution distribution systems 1. A process solution distribution system comprising:a pump disposed and adapted to distribute a scale control reagent to at least a portion of the process distribution system in response to a measured or calculated temperature;emitter tubing in fluid communication with the pump and exposed to weather and direct sunlight;optional piping in fluid communication with the pump and the emitter tubing;a section of tubing located within 1000 feet of the pump, the section of tubing comprising the same materials as the emitter tubing, the section of tubing characterized as not being in fluid communication with the pump or emitter tubing;a sensor affixed to the section of tubing, the sensor adapted to measure or calculate the measured or calculated temperature; andoptionally at least one additional sensor.2. The process solution distribution system of wherein the sensor is selected from the list consisting of: thermocouple claim 1 , resistive temperature device claim 1 , infrared detector claim 1 , bimetallic device claim 1 , liquid expansion ...

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Номер записи: 66
24-02-2022 дата публикации

METAL REFINEMENT

Номер: US20220056555A1
Автор: Caldwell David
Принадлежит:

A method, and systems in which such method may be practiced, allow for the separation of elemental metals from metal alloy. A metal alloy is atomized to form metal alloy particulates. The metal alloy particulates are exposed to an oxidizing agent, such as chlorine gas in the presence of a salt, such as NaCl, an acid, such as HCl, and water. The resulting solution may be filtered to remove particulates, reduced, filtered, reduced, filtered, and so on. In aspects, the method is used to refine gold alloy by oxidation of elemental sponge gold to gold chloride followed by reduction to pure elemental gold. 1. A method for refining metal comprising:providing bulk metal, the bulk metal comprising one or more elemental metals;atomizing the bulk metal to form atomized particulate metal alloy, wherein each atomized particulate has a size;mixing the atomized particulate with a brine solution to form a brine solution suspended with atomized metallic particles;mixing the brine solution with atomized metallic particles with an acid to form an acidic brine solution suspended with atomized metallic particles;chlorinating the acidic solution suspended with atomized metallic particles to form a chlorinated brine solution with metal-chloride precipitate;filtering out the metal-chloride precipitate to form a filtered-chlorinated brine solution;reducing the filtered-chlorinated brine solution to form an elemental metal precipitate in solution;filtering out the elemental metal precipitate to form an eluent filtrate;reducing the eluent filtrate to form a platinum-group precipitate in solution;filtering out the platinum-group precipitate to form a base metal solution;reducing the base metal solution to form a base metal precipitate in a water-chloride solution;filtering out the base metal precipitate to form a water chloride solution.2. The method of claim 1 , wherein the metal chloride precipitate is silver chloride.3. The method of claim 2 , wherein the elemental metal precipitate is gold ...

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Номер записи: 67
16-02-2017 дата публикации

METHOD FOR PRODUCING PLATINUM GROUP METAL OR PLATINUM GROUP-BASED ALLOY

Номер: US20170043392A1
Автор: DOI Yoshinori, EGAWA Yasunori, KON Daisuke
Принадлежит:

An object of the present invention is to provide a molten ingot of a platinum group metal or a platinum group-based alloy having a high material yield by suppressing a scattering phenomenon during heating and melting in a method for producing a platinum group metal or a platinum group-based alloy. The method for producing a platinum group metal or a platinum group-based alloy according to the present invention includes a preparing step of weighing a raw material that is partially or entirely of powder and, when the alloy is to be produced, mixing the weighed raw material to obtain a powder mixture, a molding step of molding and solidifying the prepared raw material to obtain molded bodies, a sintering step of sintering the molded bodies to obtain a sintered body, a melting step of melting the sintered body to produce a molten ingot, and a deformation processing step of processing the molten ingot. In the sintering step, the molded bodies are sintered in a stacked state to produce a sintered body as a joined body. 1. A method for producing a platinum group metal or a platinum group-based alloy , comprising:a preparing step of weighing a raw material that is partially or entirely of powder and, when the alloy is to be produced, mixing the weighed raw material to obtain a powder mixture;a molding step of molding and solidifying the prepared raw material to obtain molded bodies;a sintering step of sintering the molded bodies to obtain a sintered body;a melting step of melting the sintered body to produce a molten ingot; anda deformation processing step of processing the molten ingot,wherein, in the sintering step, the molded bodies are sintered in a stacked state to produce the sintered body as a joined body.2. A method for producing a platinum group metal or a platinum group-based alloy according to claim 1 , wherein claim 1 , in the molding step claim 1 , the molded bodies are substantially in the shape of a rectangular parallelepiped.3. A method for producing a ...

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Номер записи: 68
18-02-2021 дата публикации

METHODS OF SELECTIVELY RECOVERING PALLADIUM FROM A PALLADIUM-CONTAINING MATERIAL

Номер: US20210047708A1
Автор: Diaz Aldana Luis A., Lister Tedd E.
Принадлежит:

A method of selectively recovering palladium from a palladium-containing material comprises providing a leaching solution comprising hydrochloric acid, hydrogen peroxide, and an iron salt comprising one or both of ferric chloride or ferrous chloride and contacting a palladium-containing material with the leaching solution to dissolve palladium from the palladium-containing material. Related methods of selectively recovering palladium from a palladium-containing material are also disclosed. 1. A method of selectively recovering palladium from a palladium-containing material , the method comprising:providing a leaching solution comprising hydrochloric acid, hydrogen peroxide, and an iron salt comprising one or both of ferric chloride or ferrous chloride; andcontacting a palladium-containing material with the leaching solution to dissolve palladium from the palladium-containing material.2. The method of claim 1 , wherein providing a leaching solution comprises providing a leaching solution having a ratio of iron to hydrogen peroxide within a range from about 1.0:50.0 to about 1.0:250.3. The method of claim 1 , wherein providing a leaching solution comprises providing a leaching solution comprising the iron salt within a range from about 1.0 mM to about 20.0 mM.4. The method of claim 1 , wherein providing a leaching solution comprises providing a leaching solution comprising:between about 0.01 M and about 10.0 M hydrochloric acid;between about 0.1 weight percent to about 30.0 weight percent hydrogen peroxide; andbetween about 1.0 mM and about 20.0 mM of the iron salt.5. The method of claim 1 , wherein contacting a palladium-containing material with the leaching solution comprises contacting a catalytic converter with the leaching solution.6. The method of claim 1 , further comprising contacting the dissolved palladium with one or more of zinc claim 1 , aluminum claim 1 , or tin to precipitate palladium from the solution.7. The method of claim 1 , wherein providing a ...

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Номер записи: 69
18-02-2016 дата публикации

EXTRACTION AGENT FOR PRECIOUS METALS AND RHENIUM, AND EXTRACTION METHOD FOR PRECIOUS METALS AND RHENIUM USING SAME

Номер: US20160047012A1
Автор: Baba Yuzo, Goto Masahiro, Kubota Fukiko
Принадлежит:

The present invention extracts precious metals from an acidic solution containing precious metals in an early and highly efficient manner. Provided is an extraction agent for precious metals that is represented by the general formula below. In the formula, R1 and R2 each represent the same alkyl group or different alkyl groups, R3 represents a hydrogen atom or an alkyl group, and R4 represents a hydrogen atom or a discretionary group that is not an amino group and that bonds to α carbon as an amino acid. By subjecting an acidic solution containing precious metals to solvent extraction using the extraction agent for precious metals, a plurality of precious metals can be recovered all at once from a solution containing a large amount of various impurities. 2. The metal extraction agent according to claim 1 , wherein the amide derivative is any one or more of glycinamide derivatives claim 1 , histidinamide derivatives claim 1 , lysinamide derivatives claim 1 , aspartamide derivatives claim 1 , and N-methylglycine derivatives.3. An extraction method for metals claim 1 , the method comprising subjecting an acid solution containing one or more metals selected from precious metals and rhenium to solvent extraction with the metal extraction agent according to to extract the one or more metals selected from the precious metals and the rhenium from the acid solution.4. The extraction method for metals according to claim 3 , wherein the acid solution is subjected to the solvent extraction with the pH of the acid solution adjusted to 3.5 or lower.5. The extraction method for metals according to claim 3 , whereinthe acid solution contains the one or more metals selected from the precious metals and the rhenium and at least one or more of manganese, nickel, and/or cobalt, andthe acid solution is subjected to the solvent extraction with the pH of the acid solution adjusted to 2.5 or lower.6. A palladium separation method claim 3 , the method comprising:{'claim-ref': {'@idref': ' ...

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Номер записи: 70
22-02-2018 дата публикации

METHOD FOR PRODUCING ELEMENTAL RHODIUM

Номер: US20180051358A1
Автор: Alameda Stefanie F., Stettner Martin, Thiel Vasco, Voß Steffen
Принадлежит:

Method for producing elemental rhodium, comprising the steps of: 1. Method for producing elemental rhodium , comprising the steps of:(1) providing an aqueous suspension of diethylene triammonium hexahalogenorhodate adjusted with hydrohalic acid to a pH value of −1 to +2;(2) adding a sufficient quantity of reducing agent for complete conversion of the diethylene triammonium hexahalogenorhodate to the suspension provided in step (1) and allowing the reaction to proceed until the formation of elemental rhodium is completed; and(3) separating the elemental rhodium formed in step (2) from the hydrohalic aqueous composition formed in step (2);whereby halogen is bromine and/or chlorine.2. Method according to claim 1 ,whereby the pH value of the aqueous suspension provided in step (1) is in the range of −0.5 to +0.5.3. Method according to claim 1 ,whereby the diethylene triammonium hexahalogenorhodate originates from the rhodium separation step of precious metals refining.4. Method according to claim 1 ,whereby the diethylene triammonium hexahalogenorhodate is suspended in water and hydrohalic acid is added until the pH value of the aqueous suspension is adjusted to within the range of −1 to +2 or the diethylene triammonium hexahalogenorhodate is added to and suspended in a hydrohalic acid having a pH in the range of −1 to +2.5. Method according to claim 1 ,whereby the fraction of the diethylene triammonium hexahalogenorhodate in the aqueous suspension provided in step (1) is in the range of 5 to 40% by weight.6. Method according to claim 1 ,whereby the aqueous suspension is being agitated during step (2).7. Method according to claim 1 ,whereby one reducing agent or a combination of reducing agents is used and the reducing agents, in the case of a combination of reducing agents, are one after the other, at the same time or overlapping in time.8. Method according to claim 1 ,Whereby the reducing agent(s) is/are selected from the group consisting of hydrazine, hydrazine ...

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Номер записи: 71
10-03-2022 дата публикации

Method for Extracting Gold and/or Silver and/or at Least One Platinum Metal

Номер: US20220074021A1
Автор: Baldizzone Claudio, Hackenberg Juergen
Принадлежит:

A process for the winning of at least one of gold, silver, and at least one platinum metal includes introducing at least one starting material containing at least one of gold, silver, and at least one platinum metal into an aqueous solution containing at least one nitrile, and producing hydroxyl radicals in the aqueous solution. 1. A process for the winning of at least one of gold , silver , and at least one platinum metal , comprising:introducing at least one starting material containing at least one of gold, silver, and at least one platinum metal into an aqueous solution containing at least one nitrile; andproducing hydroxyl radicals in the aqueous solution.2. The process as claimed in claim 1 , wherein producing the hydroxyl radicals comprises:introducing ozone into the solution to produce the hydroxyl radicals.3. The process as claimed in claim 2 , wherein the aqueous solution contains from 0.1 mol/l to 1.0 mol/l of at least one alkali metal hydroxide.4. The process as claimed in claim 2 , wherein the ozone is introduced into the solution through a porous diffuser below the at least one starting material.5. The process as claimed in claim 2 , further comprising:{'b': '20', '#text': 'flowing the aqueous solution () flows and the ozone in the same direction over the starting material.'}6. The process as claimed in claim 1 , wherein producing the hydroxyl radicals comprises:producing the hydroxyl radicals by a Fenton reaction in the aqueous solution.7. The process as claimed in claim 6 , wherein the aqueous solution contains formic acid.8. The process as claimed in claim 1 , wherein the aqueous solution contains at least 0.1 mol/l of the at least one nitrile.9. The process as claimed in claim 1 , wherein the aqueous solution contains at least one substance selected from the group consisting of alcohols claim 1 , surfactants and activated carbon.10. The process as claimed in claim 1 , wherein the aqueous solution is irradiated with UV light. The present invention ...

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Номер записи: 72
21-02-2019 дата публикации

METHOD FOR RECOVERING GOLD

Номер: US20190055623A1
Автор: "OCallaghan John", AHTIAINEN Riina, LUNDSTRÖM Mari
Принадлежит: OUTOTEC (FINLAND) OY

Provided is a method of recovering gold, and optionally silver, from gold-bearing, and optionally silver-bearing, double refractory raw material, comprising the steps of (a) leaching the said gold-bearing, and optionally silver-bearing, double refractory raw material in a chloride containing leaching solution to dissolve gold and to obtain a leach solution comprising gold, and optionally silver, in solution, whereby the redox of leaching solution in the chloride leaching step is above 550 mV vs. Ag/AgCl; and simultaneously contacting the said leach solution comprising gold, and optionally silver, in solution with a re-sorptive material to obtain a gold-containing, and optionally silver-containing, re-sorptive material; and (b) recovering gold and optionally silver from the said gold-containing, and optionally silver-containing, re-sorptive material. 1. A method of recovering gold , and optionally silver , from a gold-bearing , and optionally silver-bearing , double refractory raw material , comprising the steps of(a) leaching the gold-bearing, and optionally silver-bearing, double refractory raw material in a chloride containing leaching solution to dissolve gold, and optionally silver, and to obtain a leach solution comprising gold, and optionally silver, in solution, whereby the redox of leaching solution in the leaching step is above 550 mV vs. Ag/AgCl; andsimultaneously contacting the leach solution comprising gold, and optionally silver, in solution with a re-sorptive material to obtain a gold-containing, and optionally silver-containing, re-sorptive material; and(b) recovering gold, and optionally silver, from the gold-containing, and optionally silver-containing, re-sorptive material.2. The method as claimed in claim 1 , wherein the gold-bearing claim 1 , and optionally silver-bearing claim 1 , double refractory material comprises at least 0.01% w/w preg-robbing matter.3. The method as claimed in claim 1 , wherein the gold-bearing claim 1 , and optionally ...

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Номер записи: 73
28-02-2019 дата публикации

METHOD AND APPARATUS FOR LIQUID/SOLID SEPARATION SUCH AS DEWATERING PARTICULATE SOLIDS AND AGITATION LEACHING

Номер: US20190060797A1
Автор: Jillings Michael Charles, Mallory Brennan James, McAlister Steven Alexander, Van Kleek Mark Donald, Vinchoff Mark Henry
Принадлежит:

Methods and apparatus for liquid/solid separation for use in applications such as dewatering fine particulate solids, and recovery of valuable metals from ore in a leaching process are provided. One application relates to methods of agitation leaching of metals such as gold from gold-bearing feedstock. A slurry is formed in a tank by agitation, and allowed to settle. A filter bed forms to drain the liquid from the tank, and a vertical screen pipe such as a well point addresses the formation of an impervious film on the upper surface of the filter bed. 1. (canceled)2. Method of separating a liquid from particulate solids , comprising the steps of: a) a tank for containing said particulate solids and liquid as a slurry;', 'b) an input to the interior of said tank for introduction of said particulate solids and liquid into said tank;', 'c) a liquid outlet passage communicating with the interior of said tank;', 'd) an agitator suspended within said tank for forming a suspension of said particles in said liquid;', 'e) said tank having a filter bed zone in a lower part thereof for formation of a filter bed to drain liquid from the tank; and', 'f) a screen pipe extending upwardly through said filter bed zone and communicating with said output passage to receive at its upper end a flow of liquid from above said lower section which is carried downwardly to flow out through said filter bed zone to said outlet passage or directly to said outlet passage;, 'i) providing an apparatus for dewatering particulate solids, comprisingii) introducing said particulate solids and liquid into said tank;iii) agitating said particulate solids and liquid to form a slurry;iv) ceasing said agitation to allow said slurry to settle, thereby forming a filter bed to drain liquid from the tank;v) using the screen pipe to transfer liquid from above said filter bed to within said filter bed or directly to said outlet passage;vi) draining the liquid from said particulate solids; andvii) removing the ...

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Номер записи: 74
10-03-2016 дата публикации

METHOD OF PREPARING A GOLD-CONTAINING SOLUTION AND PROCESS ARRANGEMENT FOR RECOVERING GOLD AND SILVER

Номер: US20160068927A1
Автор: AHTIAINEN Riina, Haapalainen Mika, HIETALA Kari, Miettinen Ville, Paatero Erkki, VALKAMA Kari
Принадлежит: OUTOTEC (FINLAND) OY

The invention relates to a method for preparing a gold-containing solution by chloride leaching from gold-bearing raw materials. A further object of the invention is to provide a method for recovering gold and optionally silver from the prepared gold-containing solution. The invention relates also to a process arrangement for recovering gold and optionally silver. 1. A method of preparing a gold-containing solution froth gold-bearing raw materials , wherein the method comprises(a) a gold leaching step, wherein the gold-bearing raw material is subjected to oxidative chloride leaching in an aqueous leaching liquor in the following conditions:(i) the aqueous leaching liquor contains dissolved cupric ions (Cu2+), chloride (CI″) and bromide (Br″),(ii) pH is within a range wherein the cupric ion does not precipitate, (iii) the oxidation potential is at least 450 mV Pt vs. Ag/AgCI, to provide a gold-containing solution optionally further containing silver,(b) a liquid/solid separation step, wherein the gold-containing solution is separated from the undissolved solid material;(c) a gold recovery step, wherein gold is recovered from the gold-containing solution from step (b) to obtain a gold-bearing organic solution and a gold-depleted leach solution containing Cu2+, CI″ and Br″; and(c′) an evaporation step, wherein gold-depleted leach solution from step (c) containing Cu2+, CI″ and Br″ is evaporated for removing excess water; and(d) a circulation step, wherein the gold-depleted leach solution obtained from the evaporation step containing Cu2+, CI″ and Br″ is circulated to the leaching step (a).2. The method as claimed in claim 1 , wherein the gold-bearing raw material is selected from ores claim 1 , concentrates claim 1 , scraps claim 1 , recycled materials leach residues claim 1 , tailings claim 1 , such as flotation tailings claim 1 , and refractory gold materials claim 1 , which refractory gold materials have been pretreated by pressure oxidation claim 1 , roasting and/ ...

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Номер записи: 75
10-03-2016 дата публикации

SYSTEM APPARATUS AND PROCESS FOR LEACHING METAL AND STORING THERMAL ENERGY DURING METAL EXTRACTION

Номер: US20160068928A1
Автор: Elsentriecy Hassan H., Gervasio Dominic Francis, Godinez Andres, Jalbout Abraham Fouad
Принадлежит:

An environmentally friendly (e.g. no acid, base, or cyanide) system and process for large scale extraction of metal ion into aerobic molten salt (or ionic liquid) and the electrodeposition of metal (e.g. copper, gold, silver, etc.) from the metal ion dissolved in the molten salt. The non-volatile low vapor pressure liquid salt is reusable, and heat from the molten slag can heat the molten salts or ionic liquids. Another embodiment comprises a one-pot apparatus for the extraction of metal (e.g. copper) from metal earths and electrodepositing the metal using a low melting (209° C.) aerated Na—K—Zn chloride salt in which copper metal oxidizes and is converted to soluble copper chloride. When an electrical power supply is connected to the graphite vessel (cathode) and to copper rods in the melt (anodes), then the copper chloride is deposited as copper metal by electroreduction on the bottom of the graphite reaction vessel. 1. A one-pot metal extraction and deposition apparatus , comprising:a. a high temperature resistant, corrosion resistant outer crucible;b. a high temperature resistant, corrosion resistant inner crucible centered within a bottom of said outer crucible, wherein said inner crucible is a cathode electrode;c. a liquid solution within said inner crucible produced by combining aerated low vapour-pressure molten salt or ionic liquid with metal ore or slag;d. a heat source within said outer crucible and encircling said inner crucible to heat said liquid solution;e. an anode rod electrode positioned vertically within said inner crucible;f. a power supply operatively connected to said inner crucible cathode electrode and said anode rod electrode; and,g. a means to stir for continuously mixing said liquid solution within said inner crucible.2. The one-pot metal extraction and deposition apparatus of claim 1 , wherein said liquid solution within said inner crucible is maintained above the melting point of the liquid solution preferably at a temperature of at ...

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Номер записи: 76
27-02-2020 дата публикации

Method and Apparatus for Extracting High-Purity Gold from Ore

Номер: US20200063237A1
Автор: Ten Robert
Принадлежит:

A method and plant for gold recovery from any gold-bearing ore by low-temperature chlorination, wherein the finely-divided gold-bearing feedstock is chlorinated gaseous chlorine at a temperature of about 245° C. to form a highly volatile chloride compound, which after leaving a reactor is directed to a low-temperature nitrogen plasma unit having a temperature of 900-1100° C., wherein the said compound decomposes and turns into high-purity gold powder, which is cooled with gaseous nitrogen at a cooling reactor's inlet, which is equipped with a water chamber, and collected in a dumping hopper. Some embodiments allow recovery of high-purity 999.9 fine gold using an environmentally friendly, cost effective and inexpensive method implemented on an industrial scale. 1. A method of extracting gold from gold-bearing material , comprising:chlorination of the gold-bearing material using gaseous chlorine at a temperature not greater than 245° C. to form a volatile chloride compound in a reactor; anddecomposing the volatile chloride compound in a low-temperature nitrogen plasma unit having a temperature between 900° C. and 1100° C. to produce high-purity gold powder.2. The method of claim 1 , wherein the particle size of the gold-bearing material is 30-50 μm.3. The method of claim 1 , wherein the reactor is blown down with an inert gas to remove air prior to the chlorination.4. The method of claim 1 , wherein the gold-bearing material is fed into the reactor through a screw in countercurrent to gaseous chlorine.5. The method of claim 1 , further comprising filtering the volatile chloride compound through a granular material to remove impurities before the decomposing in the plasma unit.6. The method of claim 1 , further comprising trapping particles of the gold powder in filtration sleeves.7. A method of extracting gold from gold-bearing material claim 1 , comprising:chlorination of the gold-bearing material using gaseous chlorine at a temperature not greater than 245° C. to ...

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Номер записи: 77
29-05-2014 дата публикации

STRIPPING AGENT AND METHOD OF USE

Номер: US20140147354A1
Автор: Fuerstenau Maurice C., Nesbitt Carl C., SEAL Thomas Joseph
Принадлежит:

A method of removing mercury adsorbed onto activated carbon is provided. The method includes treating an adsorbed mixture of metal cyanide complexes on a carbon substrate with an acidic solution of a stripping agent that is a weak acid. The method also eliminates inorganic scalants from the carbon substrate. In precious metal mining operations, the disclosed method reduces environmental emissions of mercury during the gold elution and carbon reactivation processes. 1. A method of removing mercury from an adsorbed mixture comprising mercury and gold that is adsorbed on a carbon substrate , the method comprising:desorbing mercury from the carbon substrate by contacting the adsorbed mixture with an acidic aqueous solution comprising a stripping agent that is a weak acid.2. The method of claim 1 , wherein prior to desorbing mercury from the carbon substrate claim 1 , the method further comprises:adsorbing mercury and gold on the carbon substrate to form the adsorbed mixture, which includes mercury and gold.3. The method of claim 1 , wherein the weak acid comprises phosphoric acid.4. The method of claim 1 , wherein the weak acid comprises an organic acid.5. The method of claim 1 , wherein the weak acid comprises a carboxylic acid.6. The method of claim 5 , wherein the carboxylic acid is a mono acid.7. The method of claim 6 , wherein the mono acid is selected from the group consisting of formic acid claim 6 , acetic acid claim 6 , and propionic acid.8. The method of claim 1 , wherein the acidic solution further comprises an alcohol.9. The method of claim 1 , wherein desorbing mercury from the carbon substrate comprises contacting the adsorbed mixture with the acidic aqueous solution at a temperature from about 40° C. to about 120° C.10. The method of claim 1 , wherein desorbing mercury from the carbon substrate comprises contacting the adsorbed mixture with the acidic aqueous solution at a temperature from about 60° C. to about 100° C.11. The method of claim 1 , wherein ...

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Номер записи: 78
05-06-2014 дата публикации

METHOD OF RECOVERING PLATINUM GROUP ELEMENTS

Номер: US20140150608A1
Автор: Ishizaki Keiko, Kawasaki Minoru, Nakamura Yuzuru, UEDA Tetsuya, Yamaguchi Katsunori
Принадлежит:

Provided is a method of unevenly distributing a specific element in a copper phase out of platinum group elements that exist in the copper phase, including further adding copper into a molten copper phase containing the platinum group elements including at least rhodium, thereby increasing a distribution ratio of rhodium in the molten copper phase. 1. A method of recovering platinum group elements , comprising:further adding copper into a molten copper phase containing platinum group elements including at least rhodium, therebyincreasing a content of the rhodium in an upper phase of the molten copper phase; andrecovering the platinum group elements including the rhodium from the upper phase.3. A method of recovering platinum group elements , comprising:adding manganese into a molten copper phase containing platinum group elements including at least rhodium, therebyincreasing a content of the rhodium in an upper phase of the molten copper phase; andrecovering the platinum group elements including the rhodium from the upper phase.4. A method of recovering platinum group elements , comprising:adding manganese into a molten copper phase containing platinum group elements including rhodium and at least one of platinum and palladium, therebyincreasing a content of the rhodium and at least one of the platinum and the palladium in an upper phase of the molten copper phase; andrecovering the platinum group elements from the upper phase.5. The method of recovering platinum group elements according to claim 1 , comprising:further adding iridium into the molten copper phase to which the copper is further added, and moving the iridium to a bottom phase of the molten copper phase, thereby increasing the content of the rhodium in the upper phase of the molten copper phase; andrecovering the platinum group elements including the rhodium from the upper phase.6. The method of recovering platinum group elements according to claim 1 , comprising:further adding manganese into the molten ...

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Номер записи: 79
17-03-2016 дата публикации

Method for collecting silver ions and phosphoric acid in waste fluid

Номер: US20160076120A1
Автор: Donghyun Kim, Jeongsik YOO, Jiho Park, Jihoon Jeong, Jinki NOH, Seungmo CHOI, Yeongil KIM, Young Il Lee
Принадлежит: Samsung Display Co Ltd

A method for collecting silver ions and phosphoric acid in a waste fluid includes collecting silver chloride from the waste fluid, collecting silver chloride including providing a chloride compound to the waste fluid; and collecting phosphoric acid, collecting phosphoric acid including distilling the waste fluid from which the silver chloride has been collected.

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Номер записи: 80
05-06-2014 дата публикации

RECOVERY OF REUSABLE OSMIUM TETROXIDE

Номер: US20140154156A1
Автор: Muranaka Yoshinori, Suzuki Kazushige
Принадлежит: National University Corporation Hamamatsu University School of Medicine

The present invention enables simple production of osmium tetroxide having comparable performance to that sold in reagents from a solution containing osmium. The present invention relates to a method for producing osmium tetroxide solution, the method comprising a step for using ozone or a similar oxidizing gas to oxidize a solution containing osmium and produce osmium tetroxide gas and a step for introducing the resulting osmium tetroxide gas into a recovery solution; the present invention further relates to a production apparatus therefor. 1. A method of producing osmium (VIII) oxide gas , comprising a step of oxidizing a waste liquid containing osmium and organic materials using ozone.2. The method according to claim 1 , wherein the waste liquid is a waste liquid discharged from electric microscopy sample preparation.3. The method according to claim 1 , wherein the oxidation temperature is set firstly in a range from 10° C. to 30° C. claim 1 , and secondly in a range from 60° C. to 100° C.4. The method according to claim 1 , comprising a step of concentrating the waste liquid containing osmium before oxidation.5. A method of producing osmium (VIII) oxide solution claim 1 , comprising a step of introducing the gas produced by the method according to into a recovery solution.6. The method according to claim 5 , wherein the recovery solution is alkaline claim 5 , and the temperature of said recovery solution is below room temperature.7. An osmium (VIII) oxide solution prepared by the method according to claim 5 , wherein the pH of the solution is from 7 to 10.8. The osmium (VIII) oxide solution according to which is to be used for electric microscopy sample preparation claim 7 , catalysis claim 7 , organic synthesis or fingerprint detection.9. A method of producing osmium (VIII) oxide-containing solid material claim 1 , comprising a step of introducing the gas prepared by the method according to into a solid material for recovery.10. A method of producing osmium ( ...

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Номер записи: 81
24-03-2016 дата публикации

A METHOD OF PREPARING PURE PRECIOUS METAL NANOPARTICLES WITH LARGE FRACTION OF (100) FACETS, NANOPARTICLES OBTAINED BY THIS METHOD AND THEIR USE

Номер: US20160082515A1
Автор: GRALEC Barbara, JURCZAKOWSKI Rafal, LEWERA Adam, PIWOWAR Justyna
Принадлежит:

The invention provides a method of preparing pure precious metal nanoparticles of controlled sizes and having (100) facets, wherein a precursor substance contained in a reagent solution is subjected to a reduction reaction using a reducing agent contained in the reagent solution to provide nanoparticles, and the reduction reaction is stopped by rapid lowering of the reaction solution temperature. In the process of the invention, the need to use surfactants or other organic particles to stabilize the (100) facets is eliminated. 1. A method of preparing of pure precious metal nanoparticles of controlled sizes and having (100) facets , wherein a precursor substance contained in a reagent solution is subjected to a reduction reaction by a reducing agent contained in the reagent solution to provide nanoparticles , characterized in that the reduction reaction is conducted in the absence of a surfactant and stopped after a pre-determined time t by rapid lowering of the reaction solution temperature.2. The process of claim 1 , characterized in that the reduction reaction is preceded by a rapid increase of the reagent solution temperature prepared in advance at the room or lower temperature.3. The process of or claim 1 , characterized in that increasing the reagent solution temperature or lowering the reaction solution temperature is conducted at a rate higher than or equal to 0.15° C./s.43. The process of any of - claims 1 , characterized in that the time t is in the range from 14 seconds to 2 hours.5. The process of claim 4 , characterized in that the time t is 1 min. claim 4 , 2 min. claim 4 , 5 min. claim 4 , 15 min. claim 4 , 30 min. or 1 h.65. The process of any of - claims 1 , characterized in that the reaction is conducted in a flow system comprising interconnected loops claims 1 , through which the reagent solution and reaction solution flows claims 1 , wherein said loops are placed in the reaction and cooling zone of the flow system claims 1 , and a length of the ...

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Номер записи: 82
24-03-2016 дата публикации

METHOD FOR RECOVERING GOLD FROM REFRACTORY ORE

Номер: US20160083816A1
Автор: Child Daniel E., Davis Ronald V., Gerlach Walter
Принадлежит:

A method of recovering gold from refractory ore containing a carbonaceous material, a sulfide and gold is provided. Gypsum seed crystals are added to a slurry containing a roasted refractory ore or a pressure-oxidized refractory ore to decrease gypsum encapsulation of gold and improve gold recovery. 1. A method of recovering gold from refractory ore comprising:heating refractory ore containing a sulfide and gold to form a hot ore;quenching the hot ore with an aqueous liquid containing a sulfate and calcium to form a hot liquid slurry;adjusting the pH of the hot liquid slurry to form a basic slurry;adding cyanide to the basic slurry to extract gold as a concentrated solution; andrecovering the gold from the concentrated solution, the improvement comprising:adding gypsum seed crystals after the heating step and before the cyanide addition step in an amount sufficient to decrease gypsum encapsulation of gold.2. The method of claim 1 , wherein the gypsum seed crystals are added before the quenching step.3. The method of claim 1 , wherein the gypsum seed crystals are added during the quenching step.4. The method of claim 1 , wherein the gypsum seed crystals are added after the quenching step.5. The method of claim 1 , wherein the gypsum seed crystals are added before the pH adjusting step.6. The method of claim 1 , wherein the gypsum seed crystals are added during the pH adjusting step.7. The method of claim 1 , wherein the gypsum seed crystals are added after the pH adjusting step.8. The method of claim 1 , wherein the refractory ore further contains a carbonaceous material.9. The method of claim 8 , wherein the carbonaceous material comprises elemental carbon or an organic carbon material.10. The method of claim 1 , wherein the sulfide comprises pyrite claim 1 , arsenian pyrite or arsenopyrite.11. The method of claim 1 , wherein the refractory ore is heated in an aqueous slurry and the hot ore is a hot ore slurry.12. The method of claim 1 , further comprising the step ...

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Номер записи: 83
23-03-2017 дата публикации

Method for recovering cyanide from a barren solution

Номер: US20170081202A1
Автор: Herve Buisson, Kashi Banerjee
Принадлежит: Veolia Water Solutions and Technologies Support SAS

A process is disclosed for recovering cyanide used to leach gold or silver from ore. In the course of leaching gold or silver from ore, a barren solution is generated. A portion of the barren solution containing sodium cyanide is recycled to the cyanidation process while blowdown from the barren solution is subjected to pre-treatment, UV photodissociation and pH adjustment. Ultimately, a volatile hydrocyanic acid is formed and is absorbed into a sodium hydroxide solution through the employment of a gas-filled membrane. This forms sodium cyanide that can be recycled and used in the cyanidation process to leach gold or silver from ore.

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Номер записи: 84
02-04-2015 дата публикации

METHOD FOR THE REMOVAL AND RECOVERY OF METALS AND PRECIOUS METALS FROM SUBSTRATES

Номер: US20150090075A1
Автор: Dedek Petr, Noble Matthew J.
Принадлежит:

A method for removing metal and/or precious metal-containing depositions from substrates, wherein said substrate is subjected to treatment with an organo amine protectant component P and an inorganic active component A. Component P may be formed in situ by reaction with component R. Component P is an organic amine and/or organic amine hydrochloride (preferably diisopropylamine hydrochloride), component A is an inorganic compound (preferably inorganic acid or a mixture thereof) and component R is an organic compound that can be split along the C—N bond by the component A into an organic amine (preferably dimethylformamide or N-methyl pyrrolidone). The metals in the form of organo-metallic complexes can be isolated and/or separated by means of different chemical reactions (preferably reduction reactions) and/or biosorption (preferably with seaweed or yeast). 1. A method for removing metal and/or precious metal-containing depositions from substrates , wherein said substrate is subjected to treatment with an organo amine protectant component “P”/complexing component “C” and an inorganic active component “A” , wherein said component “P”/“C” is selected from the group including mono- , di- and tri-substituted amine hydrochlorides , wherein each substituent is independently an alkyl having 1 to 18 carbon atoms or a cycloalkyl having 3 to 8 carbon atoms , and wherein said component “A” is an inorganic acid or its salt or a mixture thereof.2. The method of claim 1 , wherein said organo amine protectant is prepared in situ by reaction of organic amine and hydrochloric acid.3. The method of claim 1 , wherein said component “P” is selected from triethylamine hydrochloride claim 1 , diethylamine hydrochloride claim 1 , ethylamine hydrochloride claim 1 , dicyclohexylamine hydrochloride claim 1 , N claim 1 ,N-dimethylcyclohexylamine hydrochloride claim 1 , diisopropylamine hydrochloride claim 1 , N-ethylcyclohexylamine hydrochloride and N-methylcyclohexylamine hydrochloride.4. The ...

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Номер записи: 85
19-06-2014 дата публикации

PROCESS FOR THE REMOVAL OF PALLADIUM FROM 4-AMINO-3-HALO-5-FLUORO-6-(ARYL) PYRIDINE-2-CARBOXYLATES AND 4-AMINO-3-HALO-6-(ARYL)PYRIDINE-2-CARBOXYLATES

Номер: US20140170058A1
Автор: Emonds Mark V. M., Oppenheimer Jossian
Принадлежит: DOW AGROSCIENCES LLC

Residual palladium is removed and recovered from 4-amino-3-halo-5-fluoro-6-(aryl)pyridine-2-carboxylates and 4-amino-3-halo-6-(aryl)pyridine-2-carboxylates by treatment with an aqueous solution containing from about 20 to about 50% of an alkali metal bisulfite at a temperature from about 60 to about 90° C. and a pH from about 3.8 to about 7.0. This application claims the benefit of U.S. Provisional Patent Application No. 61/736,828, filed Dec. 13, 2012, the entirety of which is incorporated herein by reference.Provided herein are improved processes for the removal of palladium from protected or unprotected 4-amino-3-halo-5-fluoro-6-(aryl)pyridine-2-carboxylates and 4-amino-3-halo-6-(aryl)pyridine-2-carboxylates.U.S. Pat. Nos. 6,784,137 B2 and 7,314,849 B2 describe inter alia certain 4-amino-3-halo-5-fluoro-6-(aryl)pyridine-2-carboxylate and 4-amino-3-halo-6-(aryl)pyridine-2-carboxylate compounds and their use as herbicides. More often than not, these herbicides are prepared from coupling reactions involving pyridine-2-carboxylate having either a facile leaving group or a metal derivative in the 6-position of the pyridine ring. Such coupling reactions usually employ a transition metal catalyst, in particular a palladium catalyst such as palladium diacetate or bis(triphenylphosphine)palladium(II) dichloride. For reasons of both product stewardship and economics, it is important to remove and recover the palladium used in the manufacturing process from the herbicide product.K. M. Bullock, M. B. Mitchell and J. F. Toczko, 2008, 12 (5), 896-899 describe the reduction in palladium levels from 12,000 ppm to about 100 ppm in a pharmaceutical product made by a Suzuki-Miyaura coupling by treating the reaction mixture using a toluene extraction—sodium bisulfite wash procedure in which the reaction mixture, with added toluene, is treated with 20% NaHSOat 60° C. for 1 hour. When this procedure is applied to protected or unprotected 4-amino-3-halo-5-fluoro-6-(aryl)pyridine-2- ...

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Номер записи: 86
12-05-2022 дата публикации

Method and device for recovering metal by leaching

Номер: US20220145420A1
Автор: Tero RINNE
Принадлежит: 3r Cycle Oy

The present disclosure provides a method for recovering metal from metal-containing waste material by leaching. In the method comprising providing aqueous solution (14), providing leaching agent precursor, providing a source of external energy (10), treating the aqueous solution (14) with the external energy (10) to form reactive species, reacting the leaching agent precursor with the reactive species to form a leaching agent and to obtain a leaching solution, providing metal-containing material, reacting the metal-containing material with the leaching solution to obtain soluble metal complexes, and recovering the metal complexes. The present disclosure also provides a device for recovering metal by leaching.

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Номер записи: 87
14-04-2016 дата публикации

Method and plant for producing iron from roasted pyrites

Номер: US20160102375A1
Автор: Alexander DYACHENKO, Bertram Böhringer, Raik SCHÖNFELD, Valeriy LARIN
Принадлежит: Bluecher GmbH

The invention relates to a method and a recovery system for obtaining/recovering metallic iron and/or iron compounds, in particular iron chloride, from ores and/or ore tailings, especially from pyrite tailings, preferably from roasted pyrites produced during sulphuric acid manufacture.

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Номер записи: 88
04-04-2019 дата публикации

SYSTEM AND METHOD FOR ABOVE-ATMOSPHERIC LEACHING OF METAL SULFIDES

Номер: US20190100823A1
Автор: Chaiko David J., Eyzaguirre Carlos
Принадлежит:

A system and method for improving leach kinetics and recovery during above-atmospheric leaching of a metal sulfide is disclosed. In some embodiments, the method may comprise the steps of: (a) producing a metal sulfide concentrate [ via flotation; (b) moving the produced metal sulfide concentrate [ to at least one chamber [] of at least one reactor such as an autoclave [ (c) leaching the produced metal sulfide concentrate in said at least one chamber [] in the presence of oxygen [ at a pressure and/or temperature above ambient, and in the presence of partially-used [ and/or or new [ grinding media within the at least one chamber []. Systems [ and apparatus [] for practicing the aforementioned method are also disclosed. 1. A method of leaching a metal sulfide , comprising:{'b': 34', '22', '20', '22, 'i': a', 'a, '(a) providing a metal sulfide concentrate [] to at least one chamber [] of at least one reactor []; the at least one chamber [] comprising grinding media therein;'}{'b': 22', '82', '22', '22', '34', '22, 'i': a', 'a', 'a', 'a, '(b) leaching the metal sulfide concentrate in said at least one chamber [] in the presence of oxygen [] at a pressure or temperature above ambient, and in the presence of the grinding media within the at least one chamber [], wherein the grinding media within the at least one chamber [] contacts the metal sulfide concentrate [] inside of the at least one chamber []; and,'}{'b': '34', '(d) oxidizing the metal sulfide within the metal sulfide concentrate [] to a metal sulfate.'}22592. The method of claim 1 , wherein the grinding media comprises partially-used [] or new [] grinding media.3. The method according to any one of the preceding claims claim 1 , wherein the at least one reactor comprises an autoclave.55225. The method of claim 4 , wherein the leached slurry [] comprises partially-used [] grinding media.69220. The method according to any one of the preceding claims claim 4 , further comprising the step of (e) introducing new ...

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Номер записи: 89
02-06-2022 дата публикации

Process for Gold and/or Platinum Group Metals Heap Leaching with Lime

Номер: US20220170133A1
Автор: Chris Du Plessis, Deborah BALLARD, Hugues Lambert
Принадлежит: Lhoist Recherche et Developpement SA

Process for gold and/or platinum group metals heap leaching comprising irrigating a heap with an irrigation solution containing sodium cyanide for leaching gold and/or platinum group metals from a gold and/or platinum group metals containing ore. A lime reagent is added by feeding a fine particle lime suspension containing lime particles in an aqueous phase in an irrigation solution.

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Номер записи: 90
30-04-2015 дата публикации

PROCESSES FOR RECOVERING NON-FERROUS METALS FROM SOLID MATRICES

Номер: US20150114183A1
Автор: Hymer Timothy Roy, Lane William Leonard, MACCAGNI Massimo Giuseppe, Nielsen Jonathan Hylkjier, Olkkonen David Michael
Принадлежит: METALS TECHNOLOGY DEVELOPMENT COMPANY LLC

The present invention relates to a process for recovering non-ferrous metals from a solid matrix comprising the following phases: 1. A process for recovering non-ferrous metals from a solid matrix , the process comprising the phases of:(a) leaching the solid matrix with an aqueous-based solution containing chloride ions and ammonium ions and having a pH within a range of 6.5-8.5, in a presence of oxygen, at a temperature ranging from 100° C. to 160° C. and a pressure within a range of 150 kPa-800 kPa, so as to obtain an extraction solution comprising leached metals and solid leaching residue;(b) separating the solid leaching residue from the extraction solution; and(c) subjecting the extraction solution to at least one cementation so as to recover the leached metals in elemental state.2. The process of claim 1 , wherein the at least one cementation is effected in a plurality of cementation steps in series claim 1 , obtaining from each of the steps a metallic cement claim 1 , containing a metal or a combination of metals claim 1 , and a supernatant solution which is fed to a subsequent cementation step and subjected to further cementation.3. The process of claim 2 , wherein in each of the cementation steps claim 2 , a precipitating metal is added in excess with respect to the metal or the combination of metals to be precipitated.4. The process of claim 3 , wherein a same precipitating metal is added in each of the cementation steps.5. The process of claim 3 , wherein in at least one of the cementation steps claim 3 , the precipitating metal comprises a metallic cement obtained from a subsequent cementation step.6. The process of claim 3 , wherein the supernatant solution obtained from a last cementation step is subjected to electrolysis with recovery of the precipitating metal in elemental state and formation of a regenerated electrolytic solution.7. The process of claim 6 , wherein the regenerated electrolytic solution is used in the phase (a) as the leaching ...

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Номер записи: 91
20-04-2017 дата публикации

METHOD FOR RECOVERING METAL POWDER FROM PLATINUM PASTE AND METHOD FOR REGENERATING PLATINUM PASTE

Номер: US20170107594A1
Автор: Hosoi Takuya, Okamoto Nobuhisa, Sakairi Koichi
Принадлежит:

The present invention relates to a technique for recovering and recycling a platinum paste. The present invention provides a method for recovering a metal powder from a platinum paste formed by mixing a solid component composed of a metal powder including at least a platinum powder or a platinum alloy powder and an organic component including at least an organic solvent, the method including removing the organic component by heating the platinum paste at a recovery temperature set in a temperature range of 300° C. or higher and 500° C. or lower. The recovered metal powder can be recycled into a platinum paste equivalent to a new product by mixing the metal powder with a solvent etc. 18-. (canceled)9. A method for recovering a metal powder from a platinum paste formed by mixing a solid component composed of a metal powder including at least a platinum powder or a platinum alloy powder and an organic component including at least an organic solvent , comprising the steps ofheating the platinum paste at a recovery temperature set in a temperature range of 300° C. or higher and 500° C. or lower, thereby to remove the organic component and recover the metal powder.10. The method for recovering a metal powder from a platinum paste according to claim 9 , comprising the steps of treating a platinum paste corresponding to at least one of the following conditions:(a) a platinum paste viscosity has been changed by ±20% or more compared with the viscosity at the time of production of the platinum paste;(b) one or both of a platinum paste viscosity ratio of 0.4/s to 4/s (η0.4/η4) or a platinum paste viscosity ratio of 4/s to 20/s (η4/η20) as measured by Brookfield viscometer are changed by 10% or more with respect to the platinum paste viscosity ratio at the time of production; and(c) a solid component content has been changed by ±2% or more with respect to the solid component content at the production time.11. The method for recovering a metal powder from a platinum paste ...

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Номер записи: 92
29-04-2021 дата публикации

METHOD FOR REDUCING FORMATION OF CaSO4 AND Fe2O3 CONTAINING DEPOSITS IN A PRESSURE OXIDATION AUTOCLAVE AND/OR ADJACENT CIRCUITS DURING PRESSURE OXIDATION OF GOLD-CONTAINING ORE

Номер: US20210123117A1
Автор: Bakeev Kirill N., DiMaio Andrew M.
Принадлежит: SOLENIS TECHNOLOGIES, L.P.

Formation of CaSOand FeOcontaining deposits is reduced in a pressure oxidation autoclave and/or adjacent circuits during pressure oxidation of gold-containing ore. The gold-containing ore is combined with water to create an aqueous slurry that is heated and introduced into the autoclave. The method includes providing a scale inhibitor that is free of an organic polymer and includes an inorganic phosphate according to formula (I), (XPO), wherein X is Na, K, H, or combinations thereof, and m is at least about 6, an inorganic phosphate according to formula (II), YPO, wherein Y is Na, K, H, an organic phosphonate; or combinations thereof, and n is at least about 6. The method includes the step of combining the scale inhibitor and at least one of the gold-containing ore, the water, and the aqueous slurry to reduce scale. 1. A method for reducing formation of CaSOand FeOcontaining deposits in a pressure oxidation autoclave and/or adjacent circuits during pressure oxidation of gold-containing ore , wherein the gold-containing ore is combined with water to create an aqueous slurry that is heated and introduced into the pressure oxidation autoclave , said method comprising: {'br': None, 'sub': 3', 'm, '(XPO)\u2003\u2003(I)'}, 'an inorganic phosphate according to formula (I),'}, 'providing a scale inhibitor that is free of an organic polymer and comprises;'} {'br': None, 'sub': n+2', 'n', '3n+1, 'YPO\u2003\u2003(II)'}, 'an inorganic phosphate according to formula (II),'}, 'wherein X is Na, K, H, or combinations thereof, and m is at least about 6,'} an organic phosphonate (III); or', 'a combination thereof; and, 'wherein Y is Na, K, H, or combinations thereof, and n is at least about 6, or'}combining the scale inhibitor and at least one of the gold-containing ore, the water, and the aqueous slurry to reduce the formation of scale in the pressure oxidation autoclave and/or adjacent circuits.2. The method of claim 1 , wherein the inorganic phosphate of formula (I) comprises ...

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Номер записи: 93
28-04-2016 дата публикации

METHOD FOR PREPARING ULTRATHIN SILVER NANOWIRES, AND TRANSPARENT CONDUCTIVE ELECTRODE FILM PRODUCT THEREOF

Номер: US20160114395A1
Автор: Chang Min Hwa, CHO Hyun Ah, Kim Jin Yeol, Kim Youn Soo, Lee Eun Jong
Принадлежит: KOOKMIN UNIVERSITY INDUSTRY ACADEMY COOPERATION FOUNDATION

Disclosed herein is a method for preparing ultrathin silver nanowires. It may comprise (a) dissolving a silver salt (Ag salt) and a capping agent in a reducing solvent to give a mixture solution; (b) adding a halide compound to the mixture solution to yield a silver seed; (c) heating the mixture solution and then allowing the heated mixture solution to grow ultrathin silver nanowires from the silver seed under a pressure in an inert gas atmosphere; and (d) cooling the mixture solution in which the ultrathin silver nanowires have grown, followed by purification and separation to obtain the ultrathin silver nanowires. The silver nanowires are restrained from growing in thickness under a certain pressure, so that they are 30 nm or less in thickness and have a narrow diameter distribution, which leads to an improvement in aspect ratio. 1. A method for preparing ultrathin silver nanowires , comprising:(a) dissolving a silver salt (Ag salt) and a capping agent in a reducing solvent to give a mixture solution;(b) adding a halide compound to the mixture solution to yield a silver seed;(c) heating the mixture solution and then allowing the heated mixture solution to grow ultrathin silver nanowires from the silver seed under a pressure in an inert gas atmosphere; and(d) cooling the mixture solution in which the ultrathin silver nanowires have grown, followed by purification and separation to obtain the ultrathin silver nanowires.2. A method for preparing ultrathin silver nanowires , comprising:1) dissolving a magnetic ionic liquid containing tetrachloroferrate, and a capping agent in a reducing solvent to give a mixture solution;2) adding a silver salt to the mixture solution to yield a silver seed;3) heating the mixture solution and then allowing the heated mixture solution to grow ultrathin silver nanowires from the silver seed under a pressure in an inert gas atmosphere; and4) cooling the mixture solution in which the ultrathin silver nanowires have grown, followed by ...

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Номер записи: 94
28-04-2016 дата публикации

SILVER NANOWIRE MANUFACTURING METHOD

Номер: US20160114397A1
Автор: Athens George L., Goss Janet M., Lunn Jonathan D., McGough Patrick T., Patyk Richard A., Wang Wei, Ziebarth Robin P.
Принадлежит:

A process for manufacturing silver nanowires is provided, wherein the recovered silver nanowires have a high aspect ratio; and, wherein the total glycol concentration is <0.001 wt % at all times during the process. 1. A method for manufacturing high aspect ratio silver nanowires , comprising:providing a container;providing water;providing a reducing sugar;providing a reducing agent;providing a polyvinyl pyrrolidone (PVP), wherein the polyvinyl pyrrolidone (PVP) provided is divided into a first part of the polyvinyl pyrrolidone (PVP) and a second part of the polyvinyl pyrrolidone (PVP);providing a source of copper (II) ions;providing a source of halide ions;providing a source of silver ions, wherein the source of silver ions provided is divided into a first portion of the source of silver ions and a second portion of the source of silver ions;adding the water, the reducing sugar, the source of copper (II) ions and the source of halide ions to the container to form a combination;heating the combination to 110 to 160° C.;adding the first part of the polyvinyl pyrrolidone (PVP), the first portion of the source of silver ions and the reducing agent to the combination in the container to form a creation mixture;then adding to the container the second part of the polyvinyl pyrrolidone (PVP) and the second portion of the source of silver ions to form a growth mixture;maintaining the growth mixture at 110 to 160° C. for a hold period of 2 to 30 hours to provide a product mixture; and,recovering a plurality of high aspect ratio silver nanowires from the product mixture;wherein a total glycol concentration in the container is <0.001 wt % at all times.2. The method of claim 1 , wherein the first part of the polyvinyl pyrrolidone (PVP) and the first portion of the source of silver ions are added to the container simultaneously.3. The method of claim 1 , wherein the first portion of the source of silver ions is added to the combination below a surface of the combination in the ...

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Номер записи: 95
28-04-2016 дата публикации

METALLURGICAL EXTRACTION TECHNIQUE TO RECOVER PLATINUM GROUP METALS FROM A FILTER CAKE

Номер: US20160115567A1
Автор: Bhaduri Rahul Shankar, Timken Hye Kyung Cho
Принадлежит: Chevron U.S.A. INC.

This application provides a metallurgical extraction technique, comprising: 1. A metallurgical extraction technique , comprising:a) re-pulping a feed filter cake comprising platinum group metals to make a filter cake slurry;b) grinding the filter cake slurry to make a ground filter cake slurry;c) leaching the ground filter cake slurry in a hot alkaline cyanide solution to provide dissolved platinum group metals;d) liquid-solid separating of the dissolved platinum group metals; ande) recovering the dissolved platinum group metals by cementing the dissolved platinum group metals with a precipitating metal comprising an aluminum or a zinc to make a cemented filter cake; wherein the feed filter cake has the platinum group metals at a total amount from 0.1 to 1.5 wt % and a halide anion content from zero to less than 4 wt %.2. The metallurgical extraction technique of claim 1 , additionally comprising claim 1 , between steps b) and c):(1) pre-leaching the ground filter cake slurry in a dilute 0.1M to 1M sulfuric acid solution at a pre-leach pH from 1.8 to 2.2 for a pre-leach time from 5 to 60 minutes at ambient temperature to partially remove base metals;(2) performing a liquid-solid separation to collect a pre-leached filter cake, and(3) re-pulping the pre-leached filter cake in alkaline water.3. The metallurgical extraction technique of claim 2 , wherein at least 30 wt % of the base metals are removed.4. The metallurgical extraction technique of claim 1 , wherein the grinding provides a final particle size of from 45 to 150 microns.5. The metallurgical extraction technique of claim 1 , wherein the leaching is performed at a leaching temperature from 50 to 95° C.6. The metallurgical extraction technique of claim 1 , wherein the leaching occurs over a leaching retention time of from 60 minutes to 360 minutes.7. The metallurgical extraction technique of claim 1 , wherein the hot alkaline cyanide solution has a free cyanide content from 1 claim 1 ,000 to 10 claim 1 ,000 ...

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Номер записи: 96
09-06-2022 дата публикации

A PROCESS FOR RECOVERING GOLD FROM ORES

Номер: US20220178000A1
Автор: COSTI Ronny, Elazari Ran, NAIM Ronen, Sertchook Hanan
Принадлежит:

A process for recovering gold from a refractory gold ore, comprising the steps of: electrolyzing a mixture consisting of the ore particles and an aqueous bromide solution in an electrolytic cell having anode and cathode, wherein bromine is produced at the anode by oxidation of the bromide, thereby dissolving gold in the aqueous phase; separating the ore particles from the aqueous phase to obtain a leach liquor; adjusting the pH of the leach liquor to the alkaline range to produce a gold-containing precipitate; collecting the gold-containing precipitate and recycling a bromide-containing barren solution for reuse as an aqueous bromide feed solution. 1. A process for recovering gold from a refractory gold ore , comprising the steps of:electrolyzing a mixture consisting of the ore particles and an aqueous bromide solution in an electrolytic cell having anode and cathode, wherein bromine is produced at the anode by oxidation of the bromide, thereby dissolving gold in the aqueous phase;separating the ore particles from the aqueous phase to obtain a leach liquor;adjusting the pH of the leach liquor to the alkaline range to produce a gold-containing precipitate;collecting the gold-containing precipitate and recycling a bromide-containing barren solution for reuse as an aqueous bromide feed solution.2. A process according to claim 1 , wherein the pH of the leach liquor is adjusted to the alkaline range by electrolyzing the leach liquor in an electrolytic cell having anode and cathode claim 1 , whereby hydroxide ions are produced at a cathode upon water reduction.3. A process according to claim 1 , wherein the refractory ore is sulfide-containing ore.4. A process for recovering gold from a refractory gold ore in an electrolytic cell having anodic and cathodic compartments claim 1 , comprising the steps of:feeding an anolyte to the anodic compartment, the anolyte being a mixture of the ore particles and an aqueous bromide solution; feeding a catholyte to the catholyte ...

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Номер записи: 97
31-07-2014 дата публикации

PROCESS OF LEACHING PRECIOUS METALS

Номер: US20140212346A1
Автор: XIA Chen
Принадлежит: Her Majesty The Queen in Right of Canada as Repres ented by the Minister of Natural Resources Canada

The invention relates to modifications of a non-ammoniacal thiosulfate process of leaching precious metals (e.g. gold or silver) from precious metal-containing ores. The process involves leaching the ore with an aqueous lixiviant containing a soluble thiosulfate other than ammonium thiosulfate, a copper compound and an organic compound that serves as a copper ligand (i.e. a ligand-forming compound). Four modifications of this process are effective for increasing the amount of precious metal that can be extracted, reducing the consumption of materials, or for improving the rate of extraction. These four process, which may be used singly or in any combination, include (a) additions of soluble lead (e.g. as lead nitrate), (b) additions of thiourea, (c) increases in dissolved oxygen, and (d) increases of temperature at ambient pressure. This avoids the use environmentally harmful chemicals and allows for extraction from a variety of ores, e.g., containing substantial amounts of sulfides and/or quartz. 1. A method of extracting one or more precious metals from a precious metal-containing material , comprising the steps of:leaching a precious metal-containing material with a substantially cyanide-free and ammonia-free aqueous lixiviant containing dissolved thiosulfate, copper, a lead compound and an organic compound that serves as a copper ligand, thereby to form a leachate; andextracting the precious metal from the leachate.2. The method of claim 1 , wherein the lead compound is present in the lixiviant in the form of a soluble lead salt.3. (canceled)4. The method of claim 1 , wherein the lead compound is present in the lixiviant at a concentration in a range of 0.01 to 10 mM at any point within the leaching step.5. (canceled)6. The method of claim 1 , wherein the lixiviant additionally contains thiourea.7. The method of claim 6 , wherein the thiourea is present in the lixiviant at a concentration of 5 to 300 mM at any point within the leaching step.8. (canceled)9. The ...

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Номер записи: 98
19-05-2016 дата публикации

CHELATING POLYMERIC MEMBRANES

Номер: US20160138129A1
Автор: de la Parra Luis Francisco Villalobos Vazquez, HILKE Roland, PEINEMANN Klaus-victor
Принадлежит:

The present application offers a solution to the current problems associated with recovery and recycling of precious metals from scrap material, discard articles, and other items comprising one or more precious metals. The solution is premised on a microporous chelating polymeric membrane. Embodiments include, but are not limited to, microporous chelating polymeric membranes, device comprising the membranes, and methods of using and making the same. 2. The method of claim 1 , further comprising dissolving a polymer in a solvent system and forming the polymeric body with the polymer claim 1 , wherein the solvent system and the non-solvent system are miscible.3. The method of claim 2 , wherein the solvent system comprises dimethyl sulfoxide claim 2 , 1 claim 2 ,4 dioxane claim 2 , or both.4. (canceled)5. The method of claim 1 , wherein the non-solvent system comprises water.6. The method of claim 1 , wherein the non-solvent system comprises a non-solvent and a solvent.78.-. (canceled)9. The method of claim 1 , wherein R comprises an alkanediyl claim 1 , oxy-alkanediyl claim 1 , diphenylmethane claim 1 , or phenylene.1014.-. (canceled)1619.-. (canceled)21. The method of claim 20 , further comprising contacting a recovery solution with the microporous polymeric body to desorb the metal ions from the microporous polymeric body.22. The method of claim 21 , wherein the recovery solution comprises thiourea and sulfuric acid.23. The method of claim 21 , wherein the microporous polymeric body is contacted with the metal ion-containing solution after contact with the recovery solution.24. The method of claim 20 , wherein the metal-ion containing solution comprises a first metal ion and a second metal ion and wherein the microporous polymeric body selectively absorbs the first metal ion.25. The method of claim 24 , wherein the first metal ion is gold.26. The method of claim 25 , wherein the second metal ion is copper.27. The method of claim 20 , wherein a flux of at least 100 L ...

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Номер записи: 99
18-05-2017 дата публикации

Interseparation of Metals

Номер: US20170137913A1
Автор: GORDON Ross John, GRANT Richard Alasdair
Принадлежит:

The invention relates to processes for separating metals, and in particular for separating precious metals such as platinum and palladium, by solvent extraction. The invention also provides novel solvent extraction mixtures useful in the processes of the invention. The inventors have found that by simultaneously employing different extraction mechanisms for the extraction of a plurality of different metals, a simple and convenient process for their separation can be achieved. In particular, the inventors have found that the use of different extraction mechanisms for simultaneously extracting metals from an aqueous acidic phase into an organic phase enables the extracted metals to be separated by selective stripping from the organic phase using simple and mild conditions. This process is particularly advantageous as it permits two or more metals to be separated following a single solvent extraction step, because of the ability to selectively strip the metals from the organic phase. 1. A method of separating labile metal species and non-labile metal species present in an aqueous acidic phase , comprising (i) an outer sphere extractant capable of extracting the non-labile metal species into the organic phase; and', '(ii) a coordinating extractant capable of coordinating with the labile metal atom of the labile metal species,, '(a) contacting the aqueous acidic phase with an organic phase comprisingwhereby the labile and non-labile metals are extracted into the organic phase, then contacting the organic phase with water or an acidic aqueous solution to provide a first aqueous solution comprising non-labile metal species, and', 'contacting the organic phase with an aqueous phase comprising a complexing reagent capable of complexing with the labile metal atom of the labile metal species to provide a second aqueous solution comprising labile metal species., '(b) selectively stripping the metals from the organic phase by'}2. A method according to claim 1 , wherein the non- ...

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Номер записи: 100