СПОСОБ ПРОИЗВОДСТВА ЧУГУНА, УСТРОЙСТВО ДЛЯ ЕГО ПРОИЗВОДСТВА И ЧУГУН, ПОЛУЧЕННЫЙ УКАЗАННЫМ СПОСОБОМ

FIELD: metallurgy. SUBSTANCE: invention relates to a cast iron production method. Method of producing cast iron from pre-reduced iron ore comprises the following steps, where: (a) preparing a charge of pre-reduced iron ore (PIO), characterized by metal coating of more than 90 % and containing more than 2.8 wt % of carbon, wherein at least 80 % of said carbon are in iron-bound state in form of cementite Fe 3 C, (b) charging charge into electric arc furnace (EAF), (c) melting a charge in a melting chamber of an electric arc furnace (EAF) in a reducing atmosphere and with excess internal pressure generated by gases produced by reducing and flowing at step (c) reactions, to produce liquid cast iron with a predetermined carbon content, wherein at least 80 wt % of said predetermined carbon content in cast iron is obtained from carbon in a charge from pre-reduced iron ore, if necessary, to control carbon content in cast iron, step (b1) is carried out, at which carbon material is added to the mixture, wherein said step (b1) is carried out simultaneously with step (b), between steps (b) and (c), simultaneously with step (c) or after step (c). Iron is produced from pre-reduced iron ore with high content of carbon using electric arc furnace. EFFECT: reduced duration of casting cycles. 10 cl, 1 tbl, 1 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 734 853 C2 (51) МПК C21B 11/10 (2006.01) C21B 13/12 (2006.01) C21B 13/14 (2006.01) C21C 1/08 (2006.01) C21C 5/52 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК C21B 11/10 (2020.02); C21B 13/12 (2020.02); C21B 13/14 (2020.02); C21C 1/08 (2020.02); C21C 5/52 (2020.02) (21)(22) Заявка: 2018141749, 29.05.2017 29.05.2017 Дата регистрации: 23.10.2020 31.05.2016 IT 102016000056295 (43) Дата публикации заявки: 27.05.2020 Бюл. № 15 (45) Опубликовано: 23.10.2020 Бюл. № 30 (86) Заявка PCT: EP 2017/062860 (29.05.2017) C 2 C 2 (85) Дата начала рассмотрения заявки PCT на национальной фазе: ...

УСТАНОВКА ДЛЯ ИЗГОТОВЛЕНИЯ ЖИДКОГО ЧУГУНА, НЕПОСРЕДСТВЕННО ИСПОЛЬЗУЮЩАЯ МЕЛКИЕ ИЛИ КУСКОВЫЕ УГЛИ И ПЫЛЕВИДНЫЕ ЖЕЛЕЗНЫЕ РУДЫ, СПОСОБ ЕГО ИЗГОТОВЛЕНИЯ,КОМПЛЕКСНЫЙ СТАЛЕЛИТЕЙНЫЙ ЗАВОД, ИСПОЛЬЗУЮЩИЙ ЭТУУСТАНОВКУ, И ЭТОТ СПОСОБ ИЗГОТОВЛЕНИЯ

... 1. Способ изготовления жидкого чугуна, включающий стадии: изготовление железосодержащей смеси путем смешивания пылевидных железосодержащих руд и дополнительного сырья и сушки получаемой смеси; превращение железосодержащей смеси в восстановленный материал путем восстановления и спекания по мере прохождения железосодержащей смеси через многостадийный реакторный блок с псевдоожиженным слоем, реакторы с псевдоожиженным слоем которого соединены последовательно друг с другом; изготовление брикетов брикетированием восстановленного материала при высокой температуре; образование слоя уплотненного угля путем загрузки кусковых углей и брикетов, которые получают брикетированием мелких углей, в плавильный аппарат-газогенератор в качестве источника тепла для плавления брикетов; изготовление жидкого чугуна путем загрузки брикетов в плавильный аппарат-газогенератор, соединенный с многостадийным реакторным блоком с псевдоожиженным слоем, и подачи кислорода в плавильный аппарат-газогенератор, и подача восстановительного ...

Способ уплотнения металлических частиц и последующего разламывания уплотненной металлической ленты и устройство для осуществления способа

An apparatus for the passivating, multistage compaction of hot iron particles supplied in the form of a packed bed from a reduction unit and for the subsequent breaking apart of the compacted iron band is described. Prior to the final compacting, the iron particles pass through a homogenizing and precompressing stage. Thus, the compacted iron has a pore volume of max. 40% and a density of at least 5.5 g/cm3. The iron compacted to a band is subsequently guided between the rollers (7,8,11) of a separating stage exposing it to bending stresses such that it breaks apart at the predetermined desired breaking points. The breaking points have a smaller density than the band regions between them. They can be produced in that in the precompression stage the feed speed is briefly decelerated compared with the feed speed in the compaction stage or in the compaction stage there is less marked compression at these points than in the intermediate regions.

Устройство для перегрузки металлизованных гранул из шахтной печи прямого восстановления

Improvements in or relating to the briquetting or consolidating of sponge iron granules

... 312,834. Duffield, F. L. June 25, 1928. Purifying and refining.-Iron ores containing large amounts of sulphur and phosphorus mixed with carbonaceous material and with or without lime are passed through a reducing chamber and the sponge iron granules produced are intimately mixed with lime or limestone. The mixture is then pressed into briquettes or otherwise consolidated which are then melted for the purpose of liberating the phosphorus and sulphur.

Improvement in process for the reduction of iron ores

... 313,597. Trent Process Corporation, (Assignees of Trent, W. E.). June 16, 1928, [Convention date]. Metallurgical furnaces.-In a proces for reducing iron ores, the ore mixed with carbonaceous material is heated in a furnace and the iron produced is deposited in oil which coats the iron and protects it from oxidation, the oil vapours rising in the furnaces and by contact with the hot reduced ore being cracked, the products of cracking being removed from the furnace. The ore mixture is fed from a hopper 50 by valves 52 into the upper end of a furnace 12 provided with heating tubes 18 through which pass gases produced by burners 24. The ore in falling through the furnace is reduced and the hot reduced metal drops into an oil bath 54 where it is quenched and coated with oil, the coated metal being removed by conveyers 58, 62 and 68. The oil vapours from the bath 54 pass upward into contact with the tubes 18 and the partly reduced charge and the oil is cracked, the products of this operation, ...

Improvements in or relating to production of iron

... 895,282. Reducing iron ore. R-N CORPORATION. Sept. 18, 1958 [Feb. 19, 1958], No. 29957/58. Class 72. Iron ore is reduced with a carbonaceous reducing agent, without fusion, to produce finely divided iron containing combined and dissolved carbon, the product being slowly cooled from above 730‹C. to below 650‹C. but not below 150‹C. at a rate not exceeding 165‹C. per minute to prevent the formation of martensite in such amount as would adversely effect the mutual adherence of the iron particles on being compressed together. As shown, kiln 10 is supplied continuouslywith feed 1 comprising ore, limestone and coke, and the kiln is heated by flame 3. After 12 hours reduced ore at 1050‹C. to 1150‹C. is passed through conduit 16 to cooler 18 comprising a large steel drum rotated at 1À5 r.p.m. in water bath 26. The material 5 cooled to 540‹C. to 480‹C. is discharged through shoot 24 which opens below the surface of water 30 in quench tank 32 from which it is removed by rake 34.

BRIQUET AND METHOD OF MAKING SAME

Process of treatment of sponge iron to obtain a protection against corrosion and device being used for the execution of this process.

Process of iron oxide direct reduction.

IRON ADDITIVES AND PROCEDURES FOR ITS USE REDUCED AND CALCINED DEVICE FOR THE PRODUCTION OF FUSIONLIQUID IRON BY HOT COMPRESSION OF FINE ONE, DIRECT

VERFAHREN ZUM HERSTELLEN VON STAHL

PROCEDURE FOR THE TREATMENT OF SPONGE IRON

VERFAHREN ZUR BEHANDLUNG VON EISENSCHWAMM ZUM VERHINDERN DER REOXIDATION UND VORRICHTUNG ZUR DURCHFUEHRUNG DIESES VERFAHRENS

VERFAHREN ZUM BEHANDELN VON METALLISCHEN HUETTENEINSATZSTOFFEN, INSBESONDERE EISENSCHWAMMTEILCHEN

VERFAHREN ZUM HERSTELLEN VON STAHL

PROCEDURE FOR CONTINUOUS PASSIVATING OF SPONGE IRON PARTICLES

ABFULLEINRICHTUNG FUR THE ABFULLEN OF SPONGE IRON

PROCEDURE FOR THE TREATMENT FROM SPONGE IRON TO PREVENTING THE RE-OXIDATION AND DEVICE FOR THE EXECUTION OF THIS PROCEDURE

PROCEDURE FOR THE TREATMENT FROM SPONGE IRON TO PREVENTING THE RE-OXIDATION AND DEVICE FOR THE EXECUTION OF THIS PROCEDURE

VORRICHTUNG ZUM KONTROLLIERTEN ABKÜHLEN VON HEISSBRIKETTIERTEM DIREKTREDUZIERTEM EISENSCHWAMM

PROCEDURE FOR THE PRODUCTION OF REDUCTIONS IRON PELLETS USING A CONTROLLED WATER COOLING

Procedure and device for the production of welding steel

Process and plant for producing hot metal

This invention relates to the production of hot metal, wherein granular raw materials containing iron oxide are partially reduced to a reduced mixture with a carbonaceous reducing agent in a fluidized bed reactor at a temperature of at least 850°C and via a discharge system, possibly after separation of the magnetic and non-magnetic components by hot magnetic separation, the reduced mixture is supplied to a smelting reduction unit. To optimize the energy consumption, the reduced mixture is cooled to 600°C to 800°C in a heat exchanger apparatus before being supplied to the smelting unit, wherein a preheated process gas is used as cooling medium.

Rotary cooler for iron carbide production

Method for loading an electric oven with a powder material in the form of a filled hollow body

BRIQUET SHEET BREAKING BY COOLING AND BENDING

PROCESS AND APPARATUS FOR DIRECT REDUCTION OF IRON OXIDE COMPACTS

METHOD OF INHIBITING RUSTING OF SPONGE IRON

ORE REDUCTION REACTOR DISCHARGE REGULATOR

A discharge flow regulating device for regulating the discharge of sponge metal from the bottom of a vertical, moving bed reduction reactor. A frusto-conical baffle near the bottom of the reactor directs the flow of particles toward a horizontal plate spaced from the baffle and having a diameter sufficient to block the passage of the particles. Gas under pressure is supplied to the center of the plate and directed radially outward to blow particles over the rim of the plate. The supply of pressurized gas is regulated to regulate the rate at which particles are forced to and over the perimeter of the plate. The gas also serves to cool the sponge metal in the lower portion of the reactor.

METHOD FOR CARBURIZING SPONGE IRON

Sponge iron is carburized in the cooling zone of a vertical shaft iron ore reduction reactor by causing a carboncontaining gas to circulate in a closed loop including the cooling zone of the reactor and an external conduit containing a quench cooler and a pump. Improved control of the carburization of the sponge iron is achieved by measuring the specific gravity of the circulating gas and using the measured specific gravity value as a control variable effectively to regulate the flow of make-up carbon-containing gas to the cooling loop.

METHOD AND APPARATUS FOR SEPARATING INSUFFICIENTLY COOLED METAL SPONGE PARTICLES FROM A MASS OF SUCH PARTICLES

A method of eliminating hot spots in a mass of sponge iron particles made by gaseous reduction of iron ore. A layer of the particulate product is moved to a separating station, near which the layer is viewed by an infrared detector that generates a control signal when insufficiently cooled particles register therewith. The control signal is used to shift the position of a particle guide member at the separating station to cause insufficiently cooled particles to be diverted from the main particle stream. Preferably the separation is carried out in two stages. Apparatus for carrying out the method is disclosed and claimed.

APPARATUS FOR COOLING A MOVING BED OF SOLID, GAS PERMEABLE PARTICLES

RESTRICTING CHARGE OXIDATION DURING THE MELTING-DOWN OF SCRAP METAL OR THE LIKE

METHOD AND APPARATUS FOR COOLING PARTICULATE MATERIAL

METHOD AND APPARATUS FOR CONTINUOUS PASSIVATION OF SPONGE IRON MATERIAL

PASSIVATION OF SPONGE IRON

METHOD AND SYSTEM FOR THE SUPPLY OF HOT DIRECT REDUCED IRON FOR MULTIPLE USES

The present invention relates generally to a method and system for the supply of a continuous stream of hot direct reduced iron (HDRI) from a direct reduction (DR) shaft furnace or direct reduced iron (DRI) reheating furnace to a point outside of the DR shaft furnace or DRI reheating furnace where the HDRI stream is split into at least two HDRI streams. The first HDRI stream is sent continuously to a hot briquetting plant by gravity in a closed duct system. The second HDRI stream is sent continuously to an adjacent melting furnace also by gravity in a closed duct system, with a surge bin and feeders, or by a combination of gravity in a closed duct system, also with a surge bin and feeders, and a generally horizontal charge conveyor. Optionally, a third HDRI stream is employed to continuously feed multiple hot transport vessels.

METHOD FOR COOLING HIGH-TEMPERATURE REDUCED IRON

Process for the Production of Synthetic Rutile

PROCESS AND APPARATUS FOR PRODUCTION OF USEFUL IRON PRODUCT FROM INDUSTRIAL WASTE STREAMS

A method and apparatus for producing a more concentrated iron product from an industrial waste materials stream (10) comprising iron and non-iron constituents such as EAF dust generally including the steps of compacting (60 A) the waste materials stream, roasting (14 B) the waste materials stream separating (600) the iron compounds contained in the waste materials stream by magnetic separation or flotation, and providing the iron compounds back to the EAF is described.

METHOD FOR MANUFACTURING REDUCED IRON PELLETS

A method for manufacturing reduced iron pellets comprises the steps of heating iron oxide pellets incorporating carbonaceous material to yield reduced iron pellets having an apparent density of not more than 4.0 g/cm3, cooling the hot reduced iron pellets by using water at an average cooling rate between 1,500°C/min and 500°C/min, when the surfaces of the reduced iron pellets are cooled from 650°C to 150°C. The method described above does not require expensive facilities for processing briquettes and can manufacture the reduced iron pellets having high degree of metallization, superior crushing strength, and an apparent density of not more than 4.0 g/cm3.

DEVICE FOR THE CONTROLLED COOLING OF HOT-BRIQUETTED DIRECTLYREDUCED IRON SPONGE

In an arrangement for the controlled cooling of hot-briquetted direct-reduce d sponge iron in the form of an apron conveyor consisting of individual plates and located in a tank, the individual plate is designed as a conveyer trough, wherein at least one sliding plate each is located on the two opposed longitudinal outsides and the conveyor troughs are movably supported by means of the sliding plate s on slideways and connected by means of at least one chain. The invention allows to separate the drive and the bearing as the conveyor troughs are supported by means of sliding plates and the drive acts directly on the conveyor trough b y means of at least one chain. As the translation elements are designed as sliding plates and slideways, the surface pressure is reduced to less than a hundred th compared to wheels running on rails and the wear of the translation elements is thus reduced.

Verfahren zur Herstellung von Eisenschwamm.

Procédé et installation perfectionnés pour l'élaboration du fer et de ses alliages

ABFUELLEINRICHTUNG AN EINEM SCHACHTOFEN FUER DAS ABFUELLEN VON EISENSCHWAMM.

Anti-oxidn. plastics coating for spongy iron - produced by applying thin film of (Lewis) acid to catalyse formation of plastics skin

An extremely thin film of an acidic cpd. (I) is applied before formation of the plastics skin (II). The process is economical, since the use of thick sprayed or sintered plastic coatings or of org. solvents is avoided. (I) pref. is a Lewis acid (halides of B, Al, Sn, Zn, Ti, As, Sb, or Fe) or a halogenating agent yielding FeCl3. (II) is produced from cationically polymerisable monomers esp. gaseous olefins and opt. aromatic, produced by petrochemical means; or by polycondensn., pref. of phenolic plastics precursors esp. resols.

Pulver aus gegebenenfalls legiertem Eisen, insbesondere geeignet für die Herstellung von umhüllten Scheisselektroden, sowie Verfahren zu dessen Herstellung

СПОСОБ И УСТАНОВКА ДЛЯ ВОССТАНОВЛЕНИЯ ТВЕРДОЙ ФАЗЫ, СОДЕРЖАЩЕЙ ОКСИД ЖЕЛЕЗА

Настоящее изобретение относится к способу восстановления твердой фазы, содержащей оксид железа, в частности восстановления железной руды, в котором мелкозернистую твердую фазу, введенную в первый подогреватель (2), предварительно в нем нагретую и, по меньшей мере, частично обожженную во втором подогревателе (9), восстанавливают в первом реакторе (14) и во втором реакторе (16) с псевдоожиженным слоем до получения губчатого железа, которое затем брикетируют в устройстве (20) для брикетирования при температуре выше 500°С. В твердую фазу, вводимую в первый подогреватель (2), добавляют магнезит в виде сыпучего материала, который, по меньшей мере, частично обжигают с твердой фазой во втором подогревателе (9) с получением оксида магния, обеспечивающего повышенную сыпучесть губчатого железа перед брикетированием, и при этом губчатое железо с оксидом магния перед вводом в устройство (20) для брикетирования дополнительно нагревают. Кроме того, данное изобретение относится к установке для осуществления ...

СПОСОБ И УСТРОЙСТВО ДЛЯ ПРОИЗВОДСТВА ЖИДКОГО ЧУГУНА

Изобретение относится к металлургии и касается способа и устройства для производства жидкого чугуна. Предлагаемый способ производства жидкого чугуна включает следующие стадии: стадию, на которой восстанавливают первые железные руды путем завалки первых железных руд в восстановительный реактор с псевдоожиженным слоем; стадию, на которой производят прессованное железо путем прессования восстановленных первых железных руд; стадию, на которой восстанавливают вторые железные руды вместе с прессованным железом через завалку вторых железных руд и прессованного железа в восстановительный реактор с уплотненным слоем, причем размер вторых железных руд является большим, чем размер первых железных руд; стадию, на которой восстановлено прессованное железо и вторые железные руды загружают в плавильный газификатор, который подключают к восстановительному реактору с уплотненным слоем; стадию, на которой готовят окомкованные углеродные материалы как источник тепла для плавления восстановленного прессованного ...

PROCESS FOR HOT BRIQUETING GRANULAR SPONGE IRON

Method and apparatus for transforming, sponge iron, of a mixture of iron ore and coal pulverized

Self-melting synthetic iron scrap and its method of preparation

PROCEDE POUR LA PRODUCTION DE BRIQUETTES D'EPONGE DE FER CARBUREES ET PRODUITS OBTENUS

Procédé pour la production de briquettes d'éponge de fer carburées utilisant du minerai de fer ayant subi une réduction directe en lit fluidisé. L'opération de carburation s'effectue en aval du dernier réacteur de réduction. Application aux briquettes utilisées en métallurgie utilisant un four électrique.

PROCESS AND APPARATUS TO SEPARATE FROM SPONGY METAL PARTICLES the INSUFFICIENTLY COOLED Of a MASS OF SUCH PARTICLES

Process of reducing fusion and slightly oxidized iron refining

PROCESS FOR DIRECTLY REDUCING MATERIALS CONTAINING IRON OXIDE IN A ROTARY KILN

METHOD OF CARBURETION OF SPONGY METAL

PROCESS FOR PRODUCING MOLTEN IRON AND APPARATUS THEREFOR

Bedding carbon material (H) is charged onto the hearth of rotary hearth furnace (14), and carbon-material-incorporated pellets (D) containing powdery iron ore (A) and powdery coal (B) are placed on the bedding carbon material (H). The hearth is caused to pass through the inside of the rotary hearth furnace (14) to thereby attain not only heating reduction of the carbon-material-incorporated pellets (D) into solid reduced iron (F) but also heating dry distillation of the bedding carbon material (H) into char (G). Subsequently, these solid reduced iron (F) and char (G) substantially without cooling are charged into iron bath type melting furnace (16), and simultaneously oxygen gas is blown thereinto. The solid reduced iron (F) is melted, thereby obtaining molten iron (K). At least part of wastegas (M) from the iron bath type melting furnace (16) is subjected to cooling and dust removal and thereafter used as a fuel gas for the rotary hearth furnace (14). © KIPO & WIPO 2007 ...

PROCESS FOR THE RECOVERY OF EXCESS CARBON FROM THE PRODUCT OF AN IRON ORE DIRECT REDUCTION

DIRECT REDUCTION DEVICE TO OBTAIN METAL IRON WITH A HIGH CONTENT OF CARBON IN THE FORM OF CARBIDE

L'invention porte sur un dispositif (10) de réduction directe du type gravitationnel produisant du carbure de fer à partir d'oxyde de fer et comportant un réacteur (12) de réduction/carburation sous lequel est disposé une cuve de refroidissement/passivation (26) du carbure de fer. Entre le réacteur (12) et la cuve (26) de trouve une vanne à solides (24) régulant le transfert du carbure de fer.

Process for hot briqueting granular sponge iron

PCT No. PCT/EP96/05446 Sec. 371 Date Dec. 21, 1998 Sec. 102(e) Date Dec. 21, 1998 PCT Filed Dec. 5, 1996 PCT Pub. No. WO97/21840 PCT Pub. Date Jun. 19, 1997The granular sponge iron is supplied to a roller press at temperatures of 600 to 850 DEG C. for molding the hot briquets. There is produced a strip structure of sponge iron containing formed hot briquets, which are arranged at a distance from each other. By smashing the strip structure, the hot briquets are separated from each other, so that fragments of the strip structure are obtained. The hot briquets and at least part of the fragments are cooled to temperatures in the range from 20 to 400 DEG C., and the cooled briquets and fragments are passed through a rotary drum. In the rotary drum, fine-grained fines of the briquets and fragments are produced. Subsequently, these fines are separated from the briquets and fragments, as they exhibit a pyrophoric behavior.

Process of producing sponge iron

BINDER COMPOSITION

The method of making a briquet from directly reduced finely divided metallized material is disclosed whereby 85 to 95% of metallized material is mixed with 5 to 15% of a binder to form a free flowing briquet feed, then densifying the feed material and forming it into briquets.

Method of treating metallic additives used in metallurgy, especially sponge iron

For protecting iron sponge particles against reoxidation and/or corrosion a coating comprising CaO as well as iron or iron oxides as adhesion promotor is applied onto the iron sponge particles. Water is subsequently sprayed onto this coating whereupon a second coating of a mixture of dust-shaped CaO and a carbon carrier is applied. This second coating is subsequently humidified with a smaller amount of water than would be necessary for completely slaking the CaO contained within the second coating.

УСТРОЙСТВО ДЛЯ ПОЛУЧЕНИЯ КАРБИДА ЖЕЛЕЗА ПРЯМЫМ ВОССТАНОВЛЕНИЕМ МЕТАЛЛИЧЕСКОГО ЖЕЛЕЗА

Изобретение относится к получению карбида железа с высоким содержанием углерода прямым восстановлением из окиси железа. Устройство содержит реактор для восстановления окиси железа в металлическое железо с последующим науглероживанием и превращением в карбид железа в любой из его форм FeC, Fe2C, Fe3C или в их смесь. Под реактором расположен контейнер для охлаждения и пассивирования карбида железа, а между реактором и контейнером расположено соединительное устройство для регулирования прохода горячего карбида железа из реактора в контейнер, содержащее клапан для твердых частиц. С нижней частью контейнера соединено устройство для выгрузки холодного продукта, синхронизированное с соединительным устройством. Контейнер для охлаждения и пассивирования содержит цилиндрическую зону и диффузионное устройство, расположенное под цилиндрической зоной и приспособленное для диффузии охлаждающего газа для охлаждения продукта посредством прямого контакта на участке между цилиндрической зоной и диффузионным ...

ПОДОВАЯ ПЛАВИЛЬНАЯ ПЕЧЬ И СПОСОБ ЕЕ ПРИМЕНЕНИЯ ДЛЯ ПРОИЗВОДСТВА ЖЕЛЕЗА ИЛИ СТАЛИ

FIELD: production of iron or steel; mobile hearth melting furnaces. SUBSTANCE: material for conditioning the hearth which is made from hydrocarbon-containing materials including refractory materials is distributed over refractory surface of hearth melting furnace. Preliminarily reduced metallized iron is charged on hearth conditioning material, heated to melting for forming granules of metallic iron or steel at content of hydrocarbon of about 0.01 to 4% of slag. Then, solid granules, slag and hearth conditioning material are discharged from furnace and granules are subjected to screening for separation of oversize fraction and screenings, utilization of screenings and utilization of hearth conditioning materials. Oversize fraction material is introduced into melting furnace for forming molten steel in it. Hearth melting furnace is modified furnace with revolving hearth which is heated by burners working on gaseous fuel and air forming flue gases. Proposed furnace makes it possible to produce granulated iron in form of intermediate product or in form of molten steel at high yield of iron excluding decarbonization of iron at furnace outlet. EFFECT: enhanced energy efficiency. 29 cl, 5 dwg, 1 tbl ÐÎÑÑÈÉÑÊÀß ÔÅÄÅÐÀÖÈß RU (19) (11) 2 271 396 (13) C2 (51) ÌÏÊ C21B 13/14 C21B 13/08 (2006.01) (2006.01) ÔÅÄÅÐÀËÜÍÀß ÑËÓÆÁÀ ÏÎ ÈÍÒÅËËÅÊÒÓÀËÜÍÎÉ ÑÎÁÑÒÂÅÍÍÎÑÒÈ, ÏÀÒÅÍÒÀÌ È ÒÎÂÀÐÍÛÌ ÇÍÀÊÀÌ (12) ÎÏÈÑÀÍÈÅ ÈÇÎÁÐÅÒÅÍÈß Ê ÏÀÒÅÍÒÓ (21), (22) Çà âêà: 2004110038/02, 15.01.2003 (24) Äàòà íà÷àëà îòñ÷åòà ñðîêà äåéñòâè ïàòåíòà: 15.01.2003 (72) Àâòîð(û): ÕÎÔÔÌÀÍ Ãëåíí Å. (US), ÊËÎÍÍ Ðîáåðò Ì. (US) (43) Äàòà ïóáëèêàöèè çà âêè: 20.05.2005 (45) Îïóáëèêîâàíî: 10.03.2006 Áþë. ¹ 7 2 2 7 1 3 9 6 (56) Ñïèñîê äîêóìåíòîâ, öèòèðîâàííûõ â îò÷åòå î ïîèñêå: US 6273934 À, 14.08.2001. US 6126718 À, 03.10.2000. US 6224820 A, 01.05.2001. (85) Äàòà ïåðåâîäà çà âêè PCT íà íàöèîíàëüíóþ ôàçó: 20040402 (86) Çà âêà PCT: US 03/01157 (15.01.2003) 2 2 7 1 3 9 6 R U Àäðåñ äë ïåðåïèñêè: 129010, Ìîñêâà, óë. Á. Ñïàññêà , 25, ...

АППАРАТ ДЛЯ ПОЛУЧЕНИЯ РАСПЛАВЛЕННОГО ЧУГУНА ПУТЕМ ГОРЯЧЕГО ПРЕССОВАНИЯ ИЗМЕЛЬЧЕННОГО НЕПОСРЕДСТВЕННО ВОССТАНОВЛЕННОГО ЖЕЛЕЗА И ПРОКАЛЕННЫХ ДОБАВОК И СПОСОБ ПРИМЕНЕНИЯ ЭТОГО АППАРАТА

ÐÎÑÑÈÉÑÊÀß ÔÅÄÅÐÀÖÈß RU (19) (11) 2005 117 351 (13) A (51) ÌÏÊ C21B 13/14 (2006.01) ÔÅÄÅÐÀËÜÍÀß ÑËÓÆÁÀ ÏÎ ÈÍÒÅËËÅÊÒÓÀËÜÍÎÉ ÑÎÁÑÒÂÅÍÍÎÑÒÈ, ÏÀÒÅÍÒÀÌ È ÒÎÂÀÐÍÛÌ ÇÍÀÊÀÌ (12) ÇÀßÂÊÀ ÍÀ ÈÇÎÁÐÅÒÅÍÈÅ (21), (22) Çà âêà: 2005117351/02, 19.12.2003 (71) Çà âèòåëü(è): ÏÎÑÊÎ (KR) (30) Ïðèîðèòåò: 21.12.2002 KR 10-2002-0082120 28.12.2002 KR 10-2002-0085858 (43) Äàòà ïóáëèêàöèè çà âêè: 10.02.2006 Áþë. ¹ 4 (87) Ïóáëèêàöè PCT: WO 2004/057042 (08.07.2004) (74) Ïàòåíòíûé ïîâåðåííûé: Ïîëèêàðïîâ Àëåêñàíäð Âèêòîðîâè÷ Àäðåñ äë ïåðåïèñêè: 191036, Ñàíêò-Ïåòåðáóðã, à/ 24, "ÍÅÂÈÍÏÀÒ", ïàò.ïîâ. À.Â.Ïîëèêàðïîâó R U ÏÐÅÑÑÎÂÀÍÈß ÈÇÌÅËÜ×ÅÍÍÎÃÎ ÍÅÏÎÑÐÅÄÑÒÂÅÍÍÎ ÂÎÑÑÒÀÍÎÂËÅÍÍÎÃÎ ÆÅËÅÇÀ È ÏÐÎÊÀËÅÍÍÛÕ ÄÎÁÀÂÎÊ È ÑÏÎÑÎÁ ÏÐÈÌÅÍÅÍÈß ÝÒÎÃÎ ÀÏÏÀÐÀÒÀ Ôîðìóëà èçîáðåòåíè 1. Ñïîñîá èçãîòîâëåíè ðàñïëàâëåííîãî ÷óãóíà, âêëþ÷àþùèé ñëåäóþùèå îïåðàöèè: ïîëó÷åíèå âîññòàíîâèòåëüíîãî ìàòåðèàëà èç ñìåøàííûõ ãîð ÷åãî íåïîñðåäñòâåííî âîññòàíîâëåííîãî æåëåçà è ïðîêàëåííûõ äîáàâîê, ïðè÷åì ýòîò âîññòàíîâèòåëüíûé ìàòåðèàë ïîëó÷àþò ñ ð äà ïñåâäîîæèæåííûõ ñëîåâ; çàãðóçêà âîññòàíîâèòåëüíîãî ìàòåðèàëà íà ïî ìåíüøåé ìåðå îäíó ïàðó ïðåññóþùèõ âàëêîâ; ïðåññîâàíèå ýòîãî âîññòàíîâèòåëüíîãî ìàòåðèàëà íà ïî ìåíüøåé ìåðå îäíîé ïàðå ïðåññóþùèõ âàëêîâ äë ïîëó÷åíè íåïðåðûâíîãî ñïðåññîâàííîãî ìàòåðèàëà, èìåþùåãî êàíàâêè, ñôîðìèðîâàííûå íà ñïðåññîâàííûõ ïîâåðõíîñò õ; äðîáëåíèå ñïðåññîâàííîãî ìàòåðèàëà; çàãðóçêà äðîáëåíîãî ñïðåññîâàííîãî ìàòåðèàëà â óïëîòíåííûé ñëîé óãë è ïîäà÷à êèñëîðîäà â ýòîò óïëîòíåííûé ñëîé óãë äë ïîëó÷åíè ðàñïëàâëåííîãî ÷óãóíà, ãäå ïðè ïîëó÷åíèè ñïðåññîâàííîãî ìàòåðèàëà ýòîò ñïðåññîâàííûé ìàòåðèàë ôîðìèðóþò òàê, ôîðìèðóþò òàê, ÷òî îñòðûå è òóïûå óãëû îáðàçóþòñ ìåæäó öåíòðàëüíîé ëèíèåé, îáðàçîâàííîé ïî äëèíå ñå÷åíè , ñôîðìèðîâàííîãî â ïðîäîëüíîì íàïðàâëåíèè ïåðïåíäèêóë ðíî íàïðàâëåíèþ îñè ïðåññóþùèõ âàëêîâ, è ñîåäèíèòåëüíûìè ëèíè ìè, êîòîðûå ñîåäèí þò áëèæàéøèå äðóã ê äðóãó êàíàâêè ïî ïëîùàäè ïîïåðå÷íîãî ñå÷åíè . 2. Ñïîñîá ïî ï.1, ãäå îïåðàöè çàãðóçêè âîññòàíîâèòåëüíîãî ìàòåðèàëà âêëþ÷àåò çàãðóçêó âîññòàíîâèòåëüíîãî ...

СПОСОБ И УСТРОЙСТВО ДЛЯ ПОЛУЧЕНИЯ РАСПЛАВЛЕННОГО ЖЕЛЕЗА

... 1. Способ получения расплавленного железа посредством использования восстановительной печи с подвижным подом и плавильной печи, включающий в себя следующие стадии:(1) стадию загрузки восстановительной печи для загрузки подушки из углеродсодержащего материала на под восстановительной печи с подвижным подом и размещения композитных агломератов, содержащих порошкообразный источник оксида железа и порошкообразный углеродсодержащий восстанавливающий агент, на подушке из углеродсодержащего материала,(2) стадию восстановления на подвижном поде внутри восстановительной печи с подвижным подом, при этом осуществляют нагрев и восстановление композитных агломератов до твердого восстановленного железа, нагрев и высушивание подушки из углеродсодержащего материала посредством возгонки до образования полукокса,(3) стадию загрузки плавильной печи для загрузки твердого восстановленного железа и полукокса в плавильную печь по существу без охлаждения, и(4) стадию плавления при вдувании кислородсодержащего ...

СПОСОБ ПОЛУЧЕНИЯ БРИКЕТИРОВАННОГО ВОССТАНОВЛЕННОГО ЖЕЛЕЗА И СПОСОБ ПОЛУЧЕНИЯ ЧУГУНА

... 1. Способ получения брикетированного восстановленного железа, в котором брикет из порошка, который имеет общее содержание железа 40% или более, и молярное количество связанного углерода в единицах атомной массы составляет 0,7-1,5-кратное значение молярного количества кислорода в единицах атомной массы, связанного в оксиде металла, восстанавливаемого в атмосфере монооксида углерода при температуре 1200°С, подвергают восстановлению в печи с вращающимся подом, причем способ включает: ! получение восстановленного материала в атмосфере при максимальной температуре от 1200°С до 1420°С с отношением монооксида углерода к диоксиду углерода от 0,3 до 1,2, при этом материал содержит восстановленное железо, в котором содержание металлического железа составляет 50 мас.% или более, и содержание углерода составляет 5 мас.% или менее; и ! формование под давлением упомянутого материала, содержащего восстановленное железо, при температуре от 500°С до 800°С с использованием пресс-формы валкового типа. ! 2 ...

СПОСОБ И СИСТЕМА ПОДАЧИ ГОРЯЧЕГО ЖЕЛЕЗА ПРЯМОГО ВОССТАНОВЛЕНИЯ ДЛЯ МНОГОЧИСЛЕННЫХ ПОТРЕБИТЕЛЕЙ

1. Способ подачи непрерывного потока горячего железа прямого восстановления из шахтной печи прямого восстановления или нагревательной печи для железа прямого восстановления к месту снаружи шахтной печи прямого восстановления или нагревательной печи для железа прямого восстановления, в котором поток горячего железа прямого восстановления разделяется по меньшей мере на два потока горячего железа прямого восстановления, включающий: ! создание первого потока горячего железа прямого восстановления, который непрерывно направляют в установку для горячего брикетирования под действием силы тяжести в первой закрытой трубопроводной системе; и ! создание второго потока горячего железа прямого восстановления, который непрерывно направляют в соседнюю плавильную печь одним из вариантов: ! под действием силы тяжести во второй закрытой трубопроводной системе, и ! с помощью комбинации силы тяжести во второй закрытой трубопроводной системе и, по существу, горизонтального загрузочного конвейера. ! 2. Способ по п.1, в котором предусмотрено приготовление одной из шахтной печи прямого восстановления и нагревательной печи для железа прямого восстановления для получения горячего железа прямого восстановления. ! 3. Способ по п.2, в котором шахтная печь прямого восстановления или нагревательная печь для железа прямого восстановления имеет сужающуюся разгрузочную секцию. ! 4. Способ по п.2, в котором шахтная печь прямого восстановления или нагревательная печь для железа прямого восстановления имеет одиночный выпускной канал для горячего железа прямого восстановления, в противоположность множественным выпускным каналам г РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2009 140 297 (13) A (51) МПК C21B 11/02 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ, ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21)(22) Заявка: 2009140297/02, 31.03.2008 (71) Заявитель(и): МИДРЕКС ТЕКНОЛОДЖИЗ, ИНК. (US) (43) Дата публикации заявки: 10.05.2011 Бюл. № 13 (72) Автор(ы): МЕТЬЮС Гэри Эдвард (US), ...

Способ производства железа из руд

Verfahren und Anlage zur Erzeugung von Roheisen

Verfahren zur Erzeugung von Roheisen, bei dem körnige eisenoxidhaltige Rohstoffe mit einem kohlenstoffhaltigen Reduktionsmittel in einem Wirbelschichtreaktor bei einer Temperatur von wenigstens 850°C partiell zu einer reduzierten Mischung reduziert werden und die reduzierte Mischung über ein Austragsystem einer Schmelzreduktion zugeführt wird, dadurch gekennzeichnet, dass die reduzierte Mischung vor der Zuführung zu der Schmelzreduktion in einer Wärmetauscher-Vorrichtung auf 600°C bis 800°C abgekühlt wird, wobei als Kühlmedium ein vorgeheiztes Prozessgas eingesetzt wird, und dass das Prozessgas vor Einbringung in die Wärmetauscher-Vorrichtung auf 300°C bis 500°C vorgeheizt wird.

ABKUEHLVORRICHTUNG FUER EIN GASDURCHLAESSIGES BETT ABSINKENDER FESTSTOFFTEILCHEN

Verfahren und Anlage zur Herstellung bindemittelloser Heissbriketts

Improved process of treating metallic ores

... 143,525. Moffat, J. W. April 30, 1918, [Convention date]. Extracting.-Oxide ores are reduced without fusion and cooled in batches to below the temperature at which re-oxidization can occur, whereupon the product is transferred to an electric-arc furnace and melted. The reduction is effected without using a flux, and the metal is cooled to below 250‹ C. ; any flux necessary for melting is added to the charge in the electric furnaces.

ROTARY TUBE FURNACES

... 1518718 Rotary furnaces POLYSIUS AG 12 Nov 1976 [14 Jan 1976] 47167/76 Heading F4B Fine grained ore is reduced and subsequently pelletized in a plant comprising a suspension preheater 1, a first rotary furnace 21 and a second separately driven rotary furnace 23. Hot gases 10 from the furnace 21 flow through the preheater 1 to dry and pre-heat material 11 flowing counter current to the gases. A reducing agent (oil or powdered coal) is blown via the nozzle 15 into the gas conduit 131 and mixes with the fine grained ore so that the incoming ore is largely pre-reduced in the cyclones 3 and 4 and the vortex shaft 5 before entering the furnace 21. Carbonization gases and coal particles entrained by hot gases in the preheater are burned with fresh air supplied at 17 and the heat utilized for preheating and drying the ore. The ore is finally reduced in the first furnace 21 and then passes to the second faster rotating furnace 23 where a binder is added ...

PRODUCTION OF METALLIC IRON CONCENTRATE AND TITANIUM OXIDE CONCENTRATE

... 1338969 Reducing titaniferous ores ICI AUSTRALIA Ltd 16 Feb 1972 [1 March 1971 (4)] 7146/72 Heading C1N [Also in Division C7] A process for producing metallic iron and titanium oxide concentrates from titaniferous ores involves adding a flux to the ore and solid carbonaceous material in the flux to ore ratio of 10 : 1 to 1 : 1, heating the mixture to a temperature below that at which slag is formed and then separating the metallic iron formed from the titanium oxide by physical means, preferably magnetically. Heating is carried out at a temperature between 900 and 1200‹C., and exemplified fluxes are NaCl, KCl, Na 2 CO 3 , Na 2 SO 4 , KF, NaF, Na 2 B 4 O 7 , CaSO 4 , CaF 2 , CaCl 2 , apatite, dolomite, and various mixtures thereof; others mentioned are NH 4 F, H 3 BO 3 , NH 4 BO 3 , Pb metaborate and alkali and alkaline earth metal meta- and tetra-borates.

Method of Recovering Iron from Ores and Preparing Iron Alloys.

... 27,806. Ramage, A. S. Nov. 29. Ore and oxide processes; annealing; deposited iron, refining.-Spongy iron is obtained by reducing magnetite, or other ore &c., at a dull red heat with water-gas rich in hydrogen. Hydrogen is removed from electrolytically deposited iron, obtained by using the spongy iron as an anode, by melting the iron with an oxide of an alloying metal, such as chromium, vanadium, titanium, or tungsten to form a steel; a mass of spongy iron containing titanium oxide may be used for this purpose. A gas capable of oxidizing the hydrogen may also be used, or the hydrogen may be removed by annealing under reduced pressure. Specification 9991/90, [Class 41, Electrolysis], is referred to.

ORE REDUCTION REACTOR DISCHARGE REGULATOR

VERFAHREN ZUR HERSTELLUNG VON FÜR EINEN DIREKTREDUKTIONSPROZESS EINSETZBAREM EINSATZMATERIAL

PROCEDURE FOR TRANSPORTING SPONGE IRON

Procedure and rotary-hearth furnace for the reduction of iron ores

PROCEDURE AND DEVICE FOR THE REDUCTION OF FERRIC OXIDES

VORRICHTUNG ZUM KONTROLLIERTEN ABKÜHLEN VON HEISSBRIKETTIERTEM DIREKTREDUZIERTEM EISENSCHWAMM

VERFAHREN UND VORRICHTUNG ZUM ABKÜHLEN VON HEISSEM EISENSCHWAMM

BENTONIT-GEBUNDENE PRESSLINGE UNTERKÖRNIGER OXIDISCHER EISENTRÄGER

Die vorliegende Erfindung betrifft ein Verfahren zum Herstellen von eisenoxidhältigen Presslingen aus unterkörnigen oxidischen Eisenträgern durch Herstellung einer Mischung welche unterkörnige oxidische Eisenträger, Bentonit als Binder, und Wasser umfasst, Pressen der Mischung, und Härtung der bei der Pressung erhaltenen Grünpresslinge, sowie die durch das Verfahren hergestellten Presslinge und die Verwendung der Presslinge als stückiger Eisenträger. Erfindungsgemäß wird die Mischung nach Zusammenführung ihrer Komponenten einem mindestens 3-minütigen bis zu 30 minütigen Knetvorgang unterworfen wird, an den sich die Pressung anschließt. Die Presslinge werden ohne Maukvorgang durchgeführt.

PROCEDURE FOR PREHEATING IRON AGGLOMERATES

REDUCTION FURNACE

PROCEDURE AND PLANT FOR THE PRODUCTION OF BONDING AGENT-LOOSE HOT BRIQUETTES.

KUHLVORRICHTUNG TO THE KUHLUNG ITSELF OF A MOVEMENT OF GASDURCHLASSIGEN BED OF CELEBRATIONS PARTICLES

PROCEDURE FOR TREATING METALLIC HUETTENEINSATZSTOFFEN, IN PARTICULAR SPONGE IRON PARTICLE

PROCEDURE AND DEVICE FOR THE COOLING OF HOT SPONGE IRON

PROCEDURE FOR THE TREATMENT OF SPONGE IRON

PROCEDURE AND DEVICE FOR THE REDUCTION OF FERRIC OXIDES

DIRECT REDUCTION WITH COAL GASIFICATION AND COKE OVEN GAS

A method and apparatus for producing direct reduced iron (DRI), including: generating a reducing gas in a coal gasifier using coal, oxygen, steam, and a first coke oven gas (COG) stream as inputs to the coal gasifier; and delivering the reducing gas to a shaft furnace and exposing iron ore agglomerates to the reducing gas to form metallic iron agglomerates. The method further includes delivering a second COG stream directly to the shaft furnace. 1. A method for producing direct reduced iron (DRI) , comprising:generating a reducing gas in a coal gasifier using coal, oxygen, steam, and a first coke oven gas (COG) stream as inputs to the coal gasifier; anddelivering the reducing gas to a shaft furnace and exposing iron ore agglomerates to the reducing gas to form metallic iron agglomerates.2. The method of claim 1 , further comprising delivering a second COG stream to the shaft furnace.3. The method of claim 2 , further comprising delivering the second COG stream to one or more of a transition zone and a cooling zone below a primary reducing zone within the shaft furnace.4. The method of claim 1 , further comprising removing sulfur from the reducing gas prior to delivering the reducing gas to the shaft furnace.5. The method of claim 1 , further comprising heating the reducing gas prior to delivering the reducing gas to the shaft furnace.6. The method of claim 1 , further comprising compressing the first COG stream.7. The method of claim 2 , further comprising compressing the second COG stream.8. The method of claim 1 , further comprising removing one or more of tar and heavy hydrocarbons from the first COG stream.9. The method of claim 2 , further comprising removing one or more of tar and heavy hydrocarbons from the second COG stream.10. The method of claim 1 , wherein the first coke oven gas stream is input to the coal gasifier coincident with the oxygen.11. The method of claim 1 , wherein the first coke oven gas stream is input to the coal gasifier coincident with ...

Method and apparatus for the production of cast iron, cast iron produced according to said method

A method for the production of cast iron starting from pre-reduced iron ore (DRI) with an electric arc furnace includes the steps of preparing a charge of pre-reduced iron ore DRI having a metallization higher than 90% and containing over 2.8% by weight of carbon, wherein at least 80% of the carbon is combined with the iron to form iron carbide FeC; charging the charge of pre-reduced iron ore into the electric arc furnace; and melting the DRI charge to form liquid cast iron having at least 80% by weight of actual carbon content deriving from the carbon in the charge of pre-reduced iron ore, the melting step being in a reducing atmosphere and in a melting chamber of the electric arc furnace subjected to a positive internal pressure generated by the gases produced by reduction reactions that develop during melting. 1. A method for production of cast iron starting from pre-reduced iron ore (DRI) with an electric arc furnace (EAF) , comprising the following steps:{'sub': '3', 'a. preparing a charge of the pre-reduced iron ore (DRI) having a metallization higher than 90% and containing up to 6.5% by weight of carbon, wherein at least 80% of said carbon is combined with iron to form iron carbide (FeC);'}b. charging the charge of the pre-reduced iron ore (DRI) into the electric arc furnace (EAF) without adding free carbon; andc. melting the DRI charge to form liquid cast iron,wherein said liquid cast iron has a predetermined actual content of carbon, at least 80% by weight of said actual carbon content of the liquid cast iron deriving from the carbon in the charge of the pre-reduced iron ore (DRI), andwherein step c. is carried out in a reducing atmosphere and in a melting chamber of the electric arc furnace (EAF) subjected to a positive internal pressure generated by gases produced by reduction reactions that develop in step c.2. The method according to claim 1 , wherein at least 90% of said carbon in the charge of the pre-reduced iron ore (DRI) is combined with iron as ...

HOT-BRIQUETTING INSTALLATION

The invention relates to a hot-briquetting or hot-compacting installation, in particular for directly reduced iron, having at least one first row () of presses with one or more first roll presses (), and having at least one second row () of presses with one or more second roll presses (), having at least one first cooling conveyor () beneath the first row () of presses, and a second cooling conveyor () beneath the second row () of presses, and having a plurality of material lines (), which are assigned in each case to the individual roll presses () and via which the briquetted or compacted material exiting from the roll presses () is discharged to the cooling conveyors (). The material lines () are provided with one or more diverters (), which can be adjusted such that the material from the roll presses () of the first row () of presses and of the second row () of presses is discharged optionally in each case to the first cooling conveyor () or to the second cooling conveyor (). 1. A hot-briquetting or hot-compacting installation for directly reduced iron , the installation comprising:a first row with at least one roller presssupply means for feeding the directly reduced iron to the press for compaction thereby into briquettes;a first cooling conveyor and a second cooling conveyor beneath the row;a material conduit having an upstream end connected to the roller press and receiving briquettes therefrom and having respective first and second downstream ends for delivering the briquettes to the cooling conveyors; anda diverter in the material conduit operable to optionally deliver the material from the roller press to the first cooling conveyor or to the second cooling conveyor.2. The installation defined in claim 1 , the installation further comprising:a second row of at least one roller press, the first cooling conveyor being beneath the first press row and the second cooling conveyor beneath the second press row, the diverter being switchable such that the material ...

Method for Carburization of HDRI produced in H2 based Direct Reduction Process

The invention relates to a process for producing carburized directly reduced iron sponge from iron oxide material. Firstly, direct reduction is carried out by means of a reduction gas consisting at least predominantly of H2 and the carbon content in the iron sponge is then increased by means of a carburizing gas which is fed in, after which used carburizing gas is at least partly taken off while largely avoiding mixing with the reduction gas. The plant for producing carburized directly reduced iron sponge from iron oxide material comprises a reduction zone for directly reducing introduced iron oxide material to directly reduced product by means of reduction gas consisting predominantly of H2 and a reduction gas feed conduit opening into the reduction zone. It also comprises a carburization zone having a carburizing gas feed conduit opening into the carburization zone and a carburization offgas conduit.

Solid agglomerate of fine metal particles comprising a liquid oily lubricant and method for making same

Described are solid agglomerates of fine metal particles and methods for manufacturing same. A liquid oily lubricant is used in the manufacture of the solid agglomerates. The manufacturing comprises blending fine metal particles with the liquid oily lubricant and compacting the oily metallic mixture obtained to desired solid form. Advantageously, the solid agglomerates possess a desirable density, a suitable resistance to crumbling and dusting during handling, and they can resist to high temperature and to humidity. Solid agglomerated metal products, according to the invention, may be useful for different purposes such as quality charge material for steel plants, blast furnaces and foundries.

METHOD AND SYSTEM FOR HEATING DIRECT REDUCED IRON (DRI) BETWEEN A DRI SOURCE AND PROCESSING EQUIPMENT FOR THE DRI

A method of heating direct reduced iron between a direct reduced iron source and processing equipment for the direct reduced iron, comprises providing a conduit heater assembly between the direct reduced iron source and the processing equipment, wherein the conduit heater assembly receives a flow of the direct reduced iron from the direct reduced iron source and heats the direct reduced iron as the direct reduced iron flows through the conduit heater assembly and to the processing equipment.

Method and apparatus for the production of cast iron, cast iron produced according to said method

A method for the production of cast iron starting from pre-reduced iron ore (DRI) with an electric arc furnace includes the steps of preparing a charge of pre-reduced iron ore DRI having a metallization higher than 90% and containing over 2.8% by weight of carbon, wherein at least 80% of the carbon is combined with the iron to form iron carbide FeC; charging the charge of pre-reduced iron ore into the electric arc furnace; and melting the DRI charge to form liquid cast iron having at least 80% by weight of actual carbon content deriving from the carbon in the charge of pre-reduced iron ore, the melting step being in a reducing atmosphere and in a melting chamber of the electric arc furnace subjected to a positive internal pressure generated by the gases produced by reduction reactions that develop during melting. 1. A method for production of cast iron starting from pre-reduced iron ore (DRI) with an electric arc furnace (EAF) , comprising the following steps:{'sub': '3', 'a. preparing a charge of the pre-reduced iron ore (DRI) having a metallization higher than 90% and containing over 2.8% by weight of carbon, wherein at least 80% of said carbon is combined with iron to form iron carbide (FeC);'}b. charging the charge of the pre-reduced iron ore (DRI) into the electric arc furnace (EAF); andc. melting the DRI charge to form liquid cast iron,wherein said liquid cast iron has a predetermined actual content of carbon, at least 80% by weight of said actual carbon content of the liquid cast iron deriving from the carbon in the charge of the pre-reduced iron ore (DRI), andwherein step c. is carried out in a reducing atmosphere and in a melting chamber of the electric arc furnace (EAF) subjected to a positive internal pressure generated by gases produced by reduction reactions that develop in step c.2. The method according to claim 1 , wherein said charge of pre-reduced iron ore (DRI) contains up to 6.5% by weight of carbon.3. The method according to claim 1 , wherein ...

Method for storing discontinuously produced energy

A method for temporarily storing energy in which iron ore is reduced with hydrogen and the resulting intermediate product of reduced iron ore and possibly accompanying substances is subjected to further metallurgical processing; the hydrogen is produced through electrolysis of water; the electrical energy required for the electrolysis is regenerative energy from hydroelectric and/or wind and/or photovoltaic sources or other regenerative forms of energy and the hydrogen and/or the intermediate product is produced regardless of the current demand, whenever enough regeneratively produced electrical energy is available; and unneeded intermediate product is stored until there is demand or it is used so that the regenerative energy that is stored therein is also stored and a method for storing discontinuously produced energy in which the discontinuously produced energy, when it is present or after its production, is conveyed into a process in which a storable intermediate product is produced from a source material and the storable intermediate product is stored until it is required and retrieved for the production of an end product.

Process of conveying granular solids

PROCEDURE FOR COOLING HOT BRIQUETTED IRON SPONGE, AND ARRANGEMENT FOR USE OF THE PROCEDURE

La invención se refiere a un procedimiento para enfriar esponja de hierro caliente en briquetas; con el cual se evita el enfriamiento irregular einsuficiente, los esfuerzos térmicos y por lo tanto el descamado, caracterizado porque en una primerae tapa de enfriamiento gradual se hace pasar a través dela esponja de hierro un medio gaseoso, preferiblemente aire de enfriamiento; en una segunda etapa, dicha esponja de hierro es rociada con un medio líquido deenfriamiento, preferiblemente agua,has ta la temperatura de enfriamiento final. La invención también proporciona una disposición para llevar a cabo dichoprocedimiento, caracterizada por la combinación de las siguientes características: una base permeable al gas para laespon ja de hierro; un mediode conducción de gas, y boquillas rociadoras. The invention relates to a process for cooling hot iron sponge in briquettes; with which irregular and insufficient cooling, thermal stress and therefore scaling are avoided, characterized in that in a first gradual cooling cover a gaseous medium, preferably cooling air, is passed through the iron sponge; in a second stage, said iron sponge is sprayed with a liquid cooling medium, preferably water, up to the final cooling temperature. The invention also provides an arrangement for performing such a procedure, characterized by the combination of the following features: a gas permeable base for the iron sponge; a gas conduit, and spray nozzles.

Apparatus and System for compacting a hot compacted iron

본 발명은 괴상화 환원철(HCI)의 생산성 증대 및 품질 향상을 위한 괴성화 환원철 성형 장치 및 괴성화 환원철 성형 시스템에 관한 것으로서, 특히 본 발명의 일실시형태에 따른 괴성화 환원철 성형 시스템은 분말 상태의 환원분(Direct Reduction Iron; DRI)을 한 쌍의 롤 사이로 통과시켜 소정 입도의 괴성화 환원철(Hot Compacted Iron;HCI)로 성형시키는 괴성화 환원철 성형 시스템으로서, 상기 롤의 회전력은 모터의 회전량에 의해 제어되고, 상기 롤 사이의 갭은 유압 실린더에 공급되는 유압량에 의해 제어되며, HCI의 성형 전에 롤갭의 적정수준을 롤갭 지시값으로 설정하고, HCI의 성형 중에는 실시간으로 피드백되는 롤갭 실시간값을 이용하여 상기 롤갭 지시값 대비 롤갭 실시간값에 대한 차이를 연산한 롤갭 연산값을 실시간으로 보상하는 것을 특징으로 한다. The present invention relates to an agglomerated reduced iron molding apparatus and an agglomerated reduced iron molding system for increasing productivity and quality improvement of agglomerated reduced iron (HCI), in particular the agglomerated reduced iron molding system according to an embodiment of the present invention A hardened reduced iron forming system in which a reduced particle (Direct Reduction Iron (DRI)) is passed between a pair of rolls to be formed into a hot granulated reduced iron (HCI) having a predetermined particle size, and the rotational force of the roll is dependent on the rotational amount of the motor. The gap between the rolls is controlled by the amount of hydraulic pressure supplied to the hydraulic cylinder, and the roll gap indication value is set to the roll gap indication value before forming the HCI, and the roll gap real time value fed back in real time during the forming of the HCI is controlled. Compensation of the roll gap calculation value obtained by calculating the difference between the roll gap indication value and the roll gap real time value in real time is performed.

Method for agglomerating iron ore fines for coal based iron making using waste sludge

본 발명은 유동층식 예비환원로와 용융가스화로로 구성되는 용선제조장치에서 용융선철을 제조함에 있어서 예비환원로에서 예비환원된 미립 환원철에 폐기물 슬러지(sludge)를 혼합하여 미분 환원철을 괴상화시키는 방법에 관한 것으로서, 고온에서 슬러지내의 탄재성분및 환원철의 점결력을 이용하여 미분 환원철을 괴상화시킴으로써, 공정이 단순할 뿐만 아니라 폐기물 슬러지를 유용하게 활용할 수 있고, 또한 슬러지에 함유된 철분 회수율을 향상시킬 수 있는 슬러지를 이용한 미분 환원철의 괴상화방법을 제공하고자 하는데, 그 목적이 있다. The present invention relates to a method for agglomeration of finely reduced reduced iron by mixing waste sludge with finely reduced fine iron reduced in the preliminary reduction furnace in manufacturing molten pig iron in a molten iron production apparatus consisting of a fluidized bed preliminary reactor and a melt gasification furnace. The present invention relates to agglomeration of finely-reduced iron by using the coking force of carbonaceous material and reduced iron in the sludge at high temperature, which not only makes the process simple but also makes effective use of waste sludge and also improves the recovery rate of iron contained in the sludge. It is to provide a method of bulking finely reduced iron using sludge, which has its purpose. 본 발명은 유동층식 환원로에서 예비환원된 미분 환원철을 용융가스화로에 장입하여 용융선철을 제조하는 방법에 있어서, 상기 미분 환원철에 슬러지를 혼합하여 미분 환원철을 괴상화하여 용융가스화로에 장입하는 슬러지를 이용한 용철제조용 미분 환원철의 괴상화방법을 그 요지로 한다. The present invention is a method for producing molten pig iron by charging the finely reduced reduced iron pre-reduced in a fluidized bed reduction furnace in a molten gasifier, by mixing the sludge with the finely reduced iron, agglomerated the finely reduced reduced iron and charged into the molten gasifier. The grating method of finely-reduced iron for manufacturing molten iron using the main point is made.

Briquettes and method for manufacturing the same

Briquettes having improved compression strength are provided, and a method for manufacturing the briquettes by using by-products of ironworks is provided. Briquettes comprise iron fines, and at least one by-product of dust and sludge, wherein the iron fines have a larger grain size and higher density than the by-product, and the by-product is filled in pores between the iron fines. A method for manufacturing briquettes comprises the steps of feeding iron fines, mixing the iron fines with dust or sludge to prepare a mixture, and pressing the mixture to manufacture briquettes.

Ore reduction reactor discharge regulator

A method for making molten iron by using hot compaction of fine dri and calcined additives in non-coking coal based iron making process

본 발명은, 분환원철및 분소성부원료가 함유된 균일입도의 괴성체를 사용하여 용철생산량을 증대시킬 수 있도록 개선된 일반탄을 이용한 용철 제조 공정에서 분환원철 및 분소성부원료의 괴성체를 이용한 용철제조방법에 관한 것이다. The present invention, molten iron using the reduced iron and the compacted iron raw material in the molten iron manufacturing process using the improved coal to improve the production of molten iron using a uniform particle size compacted material containing the reduced iron and powdered subsidiary material It relates to a manufacturing method. 본 발명은, 일반탄을 이용한 용철 제조 공정에서, 분환원철및 분소성부원료를 혼합 괴성화하여 30mm이하의 크기를 갖추고, 밀도는 3.5 내지 4.0Kg/cm³를 갖는 괴성체로 성형하여 상기 용융 가스화로에 투입하고, 용철제조을 실행하는 일반탄을 이용한 용철 제조 공정에서 분환원철 및 분소성부원료의 괴성체를 이용한 용철제조방법을 제공한다. The present invention, in the molten iron manufacturing process using a general coal, mixed granulated iron and powdered subsidiary materials are mixed and compacted to have a size of 30 mm or less, the density is formed into a compacted body having a 3.5 to 4.0 Kg / cm³ to the molten gasifier Provided is a method for manufacturing molten iron using a compacted body of reduced iron and powdered auxiliary raw materials in a molten iron manufacturing process using ordinary coal which is injected and performs molten iron. 본 발명에 의하면, 분환원철및 분소성부원료를 혼합하여 괴상화하기 때문에 상당한 공극이 존재하게 되는데 이러한 이유로 괴성체는 석탄충진층내에서 쉽게 침탄되어 용융이 용이하게 이루어 지고, 그에 따라서 용철 생산량 향상이 기대될 수 있다. According to the present invention, there are considerable voids because the mixed reducing iron and the powdered subsidiary material are mixed and bulked. For this reason, the compacted body is easily carburized in the coal-packed bed to facilitate melting, thereby improving molten iron production. Can be.

Molten iron manufacturing method and molten iron manufacturing equipment

本发明提供一种使用碳氢化合物气体来制造改质气以提高还原炉中的还原铁的还原力的铁水制造方法和铁水制造设备。铁水制造方法包括：i)提供从铁矿石转化成还原铁的还原炉排出的废气；ii)提供将废气分流的另一路废气和碳氢化合物气体混合的混合气；iii)将混合气进行改质以提供改质气；以及iv)将从连接于还原炉并接收还原铁的熔炼气化炉排出的还原气体和改质气混合后吹入还原炉。

Manufacturing method of sintered ore

소결기의 조업에 있어서 기체 연료를 이용하는 일 없이, 또한 천하 위치보다 배광부측의 위치에서 적정한 산소 부화를 실행하는 것에 의해, 높은 생산율을 유지하여 고강도의 소결광을 제조하는 방법을 제안한다. DL 소결기의 소결 베드(원료 장입층) 중의 탄재를 순차 연소시키는 것에 의해 배합 원료를 소성하여 소결광을 제조하는 방법에 있어서, 소결기상의 상기 원료 장입층의 윗쪽으로부터 산소 부화를 실행할 때에, 해당 원료 장입층의 상부 표면이 점화되고 나서 4분 경과한 위치보다 배광부측 부근의 위치에서 산소 부화의 처리를 실행하여 소결시킨다.

Method for manufacturing sintered ore

철광석, 부원료, 반광 및 연료를 포함하는 소결배합원료에 수분을 첨가하여 1차 조립하는 단계, Al 2 O 3 성분이 3 내지 4중량%인 고 알루미나 분철광석, Al 2 O 3 성분을 0.5중량% 이하로 함유한 저 알루미나 분철광석 및 조립용 바인더를 혼합한 후 펠렛타이징하여 선택조립물을 제조하는 단계, 및 상기 선택조립물을 상기 1차 조립이 완료된 소결배합원료에 추가하여 2차 조립하는 단계를 포함하는, 알루미나 함량이 높은 분철광석을 이용한 소결광의 제조방법이 제공된다. 본 발명에 따르면, 고 알루미나 분철광석 및 극미분철광석을 활용하면서 생산성과 품질이 향상된 소결광을 얻을 수 있다. Primary granulation by adding water to a sintered blended raw material including iron ore, secondary raw materials, semi-ores and fuels, 0.5 wt% of high alumina iron ore and Al 2 O 3 with an Al 2 O 3 component of 3 to 4 wt% Preparing a selected assembly by mixing pellets of low alumina ore and ore containing thereafter and pelletizing the granules, and adding the selective assembly to the sintered blended raw material in which the primary granulation is completed for the second granulation. Provided is a method of manufacturing a sintered ore using a high alumina content of iron ore, including the step. According to the present invention, it is possible to obtain a sintered ore with improved productivity and quality while utilizing high alumina iron ore and ultra fine iron ore.

Direct reduction method and device for iron-containing pellets based on internal circulation of hot air of each section of rotary kiln

本发明公开了一种基于回转窑各段热风内循环的含铁球团直接还原方法及直接还原装置。为实现煤基回转窑的低温快速还原，本发明将煤基回转窑依次划分为干燥段、预热段、还原焙烧段和缓冷阶段，根据回转窑各段内物料和热风的状态变化分析，将各段内产生的含水蒸汽、CO、CO 2 及余热等热风在各段内进行合理再分配，充分发挥预热及余能的利用潜力，降低还原反应所需的反应温度，即通过特殊设计的回转窑各段风流内循环机制，达到节能减排并提高含铁球团低温快速还原的目的。

Method and apparatus for cooling high temperature briquette sponge iron

Facility for hot metal manufacturing, directly using small or lump coal and powdered iron ores, method for its production, complete steel mill, using this facility and this manufacturing method

FIELD: metallurgy. SUBSTANCE: group of inventions concerns options of method and facility for hot metal manufacturing using small or lump coal and powdered iron ores and holding of high factor of iron-bearing ores reduction during reduction by gas of iron-bearing ores using reducing coal gas produced from coal. Group of inventions also includes complete steel mill using facility for hot metal manufacturing providing receiving of hot-rolled steel sheet, and also its manufacturing method. EFFECT: creation of facility for hot metal manufacturing with holding of high factor of iron-bearing ores reduction during reduction by gas of iron-bearing ores using reducing coal gas produced from coal. 42 cl, 8 dwg ÐÎÑÑÈÉÑÊÀß ÔÅÄÅÐÀÖÈß (19) RU (11) 2 339 702 (13) C2 (51) ÌÏÊ C21B 13/14 (2006.01) ÔÅÄÅÐÀËÜÍÀß ÑËÓÆÁÀ ÏÎ ÈÍÒÅËËÅÊÒÓÀËÜÍÎÉ ÑÎÁÑÒÂÅÍÍÎÑÒÈ, ÏÀÒÅÍÒÀÌ È ÒÎÂÀÐÍÛÌ ÇÍÀÊÀÌ (12) ÎÏÈÑÀÍÈÅ ÈÇÎÁÐÅÒÅÍÈß Ê ÏÀÒÅÍÒÓ (21), (22) Çà âêà: 2006119217/02, 06.12.2004 (24) Äàòà íà÷àëà îòñ÷åòà ñðîêà äåéñòâè ïàòåíòà: 06.12.2004 (30) Êîíâåíöèîííûé 05.12.2003 KR 05.12.2003 KR 03.12.2004 KR ïðèîðèòåò: 10-2003-0088033 10-2003-0088035 10-2004-0101147 (43) Äàòà ïóáëèêàöèè çà âêè: 10.01.2008 (56) Ñïèñîê äîêóìåíòîâ, öèòèðîâàííûõ â îò÷åòå î ïîèñêå: WO 03/025230 À1, 27.03.2003. WO 02/50219 À1, 27.06.2002. RU 2011471 Ñ1, 30.04.1994. RU 2132246 Ñ1, 27.06.1999. RU 2135597 Ñ1, 27.08.1999. (86) Çà âêà PCT: KR 2004/003192 (06.12.2004) (73) Ïàòåíòîîáëàäàòåëü(è): ÏÎÑÊÎ (KR), Ôåñò-Àëïèíå Èíäóñòðèàíëàãåíáàó ÃìáÕ óíä Êî (AT) R U 2 3 3 9 7 0 2 (87) Ïóáëèêàöè PCT: WO 2005/054520 (16.06.2005) Àäðåñ äë ïåðåïèñêè: 191036, Ñàíêò-Ïåòåðáóðã, à/ 24, "ÍÅÂÈÍÏÀÒ", ïàò.ïîâ. À.Â.Ïîëèêàðïîâó, ðåã.¹ 0009 (54) ÓÑÒÀÍÎÂÊÀ ÄËß ÈÇÃÎÒÎÂËÅÍÈß ÆÈÄÊÎÃÎ ×ÓÃÓÍÀ, ÍÅÏÎÑÐÅÄÑÒÂÅÍÍÎ ÈÑÏÎËÜÇÓÞÙÀß ÌÅËÊÈÅ ÈËÈ ÊÓÑÊÎÂÛÅ ÓÃËÈ È ÏÛËÅÂÈÄÍÛÅ ÆÅËÅÇÍÛÅ ÐÓÄÛ, ÑÏÎÑÎÁ ÅÃÎ ÈÇÃÎÒÎÂËÅÍÈß, ÊÎÌÏËÅÊÑÍÛÉ ÑÒÀËÅËÈÒÅÉÍÛÉ ÇÀÂÎÄ, ÈÑÏÎËÜÇÓÞÙÈÉ ÝÒÓ ÓÑÒÀÍÎÂÊÓ È ÝÒÎÒ ÑÏÎÑÎÁ ÈÇÃÎÒÎÂËÅÍÈß (57) Ðåôåðàò: Èçîáðåòåíèå îòíîñèòñ ê âàðèàíòàì ñïîñîáà è óñòàíîâêè äë èçãîòîâëåíè æèäêîãî ...

Apparatus for manufacturing molten irons and method for manufacturing molten irons using the same

본 발명은 용철제조장치 및 이를 이용한 용철제조방법에 관한 것이다. 본 발명에 따른 용철제조방법은, 제1 철광석을 유동층형 환원로에 장입하여 환원하는 단계, 환원된 제1 철광석을 괴성화하여 괴성체를 제조하는 단계, 제1 철광석의 입도보다 큰 입도를 가진 제2 철광석과 괴성체를 충전층형 환원로에 장입하여 함께 환원하는 단계, 환원된 괴성체와 제2 철광석을 충전층형 환원로에 연결된 용융가스화로에 장입하는 단계, 괴성체와 제2 철광석을 용융하는 열원으로서 괴상 탄재를 준비하는 단계, 용융가스화로에 괴상 탄재를 장입하여 석탄충전층을 형성하는 단계, 그리고 용융가스화로에 설치된 풍구를 통하여 산소를 석탄충전층에 취입하여 괴성체와 제2 철광석으로부터 용철을 제조하는 단계를 포함한다. The present invention relates to a molten iron manufacturing apparatus and a molten iron manufacturing method using the same. In the molten iron manufacturing method according to the present invention, charging the first iron ore in a fluidized-bed reduction furnace, reducing the first iron ore by agglomeration to produce a compacted body, having a particle size larger than the particle size of the first iron ore Charging the second iron ore and compacted material in a packed-bed reduction furnace to reduce them together; charging the reduced compacted material and second iron ore into a melt gasifier connected to the packed-bed reduction furnace; melting the compacted material and the second iron ore Preparing a bulk coal material as a heat source, charging a coal gas into the molten gas furnace to form a coal filling layer, and blowing oxygen into the coal filling layer through a vent provided in the molten gas furnace to form the compacted body and the second iron ore. Preparing molten iron therefrom. 용철제조방법, 용철제조장치, 충전층형 환원로, 괴성체, 강도 Molten iron manufacturing method, molten iron manufacturing apparatus, packed-bed reduction furnace, compacted material, strength

Apparatus for manufacturing molten irons and method for manufacturing molten irons using the same

本发明涉及一种用于制造铁水的设备和一种使用该设备制造铁水的方法。根据本发明的用于制造铁水的方法包括：通过将第一铁矿石装入流化床还原反应器中来还原所述第一铁矿石；通过压制经还原的第一铁矿石来制造压制铁；通过将第二铁矿石和所述压制铁装入填充床还原反应器中而对所述第二铁矿石以及所述压制铁进行还原，所述第二铁矿石的尺寸大于所述第一铁矿石的尺寸；将经还原的压制铁和所述第二铁矿石装入与所述填充床还原反应器相连的熔炉－气化器中；制备块状含碳材料作为热源，用于熔化经还原的压制铁和所述第二铁矿石；将所述块状含碳材料装入所述熔炉－气化器中，然后形成煤填充床；以及将氧气通过安装在所述熔炉－气化器中的鼓风口注入，然后从所述压制铁和所述第二铁矿石制造铁水。

The method for recycling by-product emitted from coal-based iron making process and equipment for hot compacting iron

본 발명은 석탄계 용철 제조 공정에서 분진 또는 슬러지의 형태로 발생하는, 유용성분이 다량 함유된 부산물을 환원철의 괴성화 제조 공정에서 재활용하는 방법 및 괴성화 설비에 관한 것으로서, 철광석을 환원시키는 유동 환원로; 상기 유동 환원로에서 환원된 환원철을 저장하는 환원철 저장조; 환원철 공급관을 통해 상기 환원철 저장조와 연결되며, 환원철을 괴성화 설비로 공급하는 강제 이송조; 상기 강제 이송조로부터 공급되는 환원철을 괴성화하는 괴성화 설비; 및 용철 제조 공정에서 발생한 부산물 괴성체를 부산물 공급 배관을 통해 이송하는 이송수단을 포함하며, 상기 부산물 공급 배관은 상기 부산물 괴성체를 상기 환원철 공급관 및 강제 이송조로부터 선택되는 적어도 하나에 공급하는 것인 환원철 괴성화 설비 및 이에 따른 괴성화 방법을 제공한다. The present invention relates to a method and a compaction facility for recycling by-products containing a large amount of useful components generated in the form of dust or sludge in a coal-based molten iron manufacturing process in the compaction production process of reduced iron, a flow reduction furnace for reducing iron ore; A reduced iron storage tank for storing reduced iron reduced in the flow reduction furnace; A forced transfer tank connected to the reduced iron storage tank through a reduced iron supply pipe and supplying reduced iron to a compaction facility; A compaction facility for compacting the reduced iron supplied from the forced transfer tank; And transfer means for transferring the by-product compacted material generated in the molten iron manufacturing process through a by-product supply pipe, wherein the by-product supply pipe is to supply the by-product compacted material to at least one selected from the reduced iron supply pipe and a forced transfer tank. Provided is a reduced iron compaction plant and a compaction method accordingly.

Method to produce hot metal and installation to this end

FIELD: metallurgy. SUBSTANCE: proposed method comprises reducing first particles of iron ore by loading it into reduction reactor with pseudoliquid layer, producing compacted iron-containing particles by pressing reduced first iron-containing particles, reducing second particles of iron ore together with compacted particles by loading second particles and compacted particles into reduction reactor with compacted layer. Sized of iron ore particles exceeds that of the first particles. Reduced compacted iron-containing particles and second particles of iron ore are loaded into gasification furnace communicated with reduction reactor with compacted layer. Lumpy carbon materials are prepared to make heating source for reduction of compacted iron-containing and second iron ore particles to be loaded in aforesaid furnace to produce coal compacted layer and introduce oxygen via tuyere mounted in melting gasification furnace. EFFECT: reduction and melting of iron ore particles, reduced losses and ruled out conglomeration effect in reaction with pseudoliquid layer. 47 cl, 7 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2 405 044 (13) C1 (51) МПК C21B 13/14 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ, ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (21), (22) Заявка: 2009108007/02, 10.08.2007 (24) Дата начала отсчета срока действия патента: 10.08.2007 (45) Опубликовано: 27.11.2010 Бюл. № 33 (73) Патентообладатель(и): Поско (KR) (85) Дата перевода заявки PCT на национальную фазу: 11.03.2009 2 4 0 5 0 4 4 R U (87) Публикация PCT: WO 2008/018774 (14.02.2008) Адрес для переписки: 191036, Санкт-Петербург, а/я 24, "НЕВИНПАТ", пат.пов. А.В.Поликарпову (54) УСТАНОВКА ДЛЯ ПОЛУЧЕНИЯ ЖИДКОГО ЧУГУНА И СПОСОБ ПОЛУЧЕНИЯ ЖИДКОГО ЧУГУНА С ИСПОЛЬЗОВАНИЕМ ЭТОЙ УСТАНОВКИ (57) Реферат: Изобретение относится к получению жидкого чугуна. Осуществляют восстановление первых частиц железной руды путем их загрузки в реактор восстановления с псевдоожиженным слоем, получение ...

Metallic iron producton method

FIELD: metallurgy. SUBSTANCE: invention refers to the metallic iron production method. Mixture agglomerate is formed comprising iron oxide material and a carbon-containing reducing agent, the resulting agglomerate is introduced into the heating furnace with a movable hearth and reduced by heating. The reduced product comprising metallic iron and slag is discharged from the heating furnace of the movable hearth, crushed using a crusher, separated by screening using a screen having holes with size of 2-8 mm on the material consisting of coarse grains, and the material composed of fines. Thus the volume density of the material consisting of coarse grains is from 1.2 to 3.5 kg/l. The resulting material consisting of coarse grains is crushed using an impact crusher, sorted using a separator, with metallic iron being collected. EFFECT: invention enables continuous and efficient collection of metallic iron product without reducing the grain size. 39 cl, 29 dwg, 24 tbl, 23 ex РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 612 477 C2 (51) МПК C21B 13/10 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ФОРМУЛА (21)(22) Заявка: ИЗОБРЕТЕНИЯ К ПАТЕНТУ РОССИЙСКОЙ ФЕДЕРАЦИИ 2015107231, 05.08.2013 (24) Дата начала отсчета срока действия патента: 05.08.2013 Дата регистрации: Приоритет(ы): (30) Конвенционный приоритет: JP JP JP JP (73) Патентообладатель(и): КАБУСИКИ КАЙСЯ КОБЕ СЕЙКО СЕ (КОБЕ СТИЛ, ЛТД.) (JP) 2012-173453; 2012-173454; 2013-090688; 2013-110283 (56) Список документов, цитированных в отчете о поиске: JP 2012-144788 A, 02.08.2012. JP (43) Дата публикации заявки: 27.09.2016 Бюл. № 27 (45) Опубликовано: 09.03.2017 Бюл. № 7 2010-111941 A, 20.05.2010. JP 2009-507134 A, 19.02.2009. JP 2006-322075 A, 30.11.2006. (85) Дата начала рассмотрения заявки PCT на национальной фазе: 03.03.2015 2 6 1 2 4 7 7 03.08.2012 03.08.2012 23.04.2013 24.05.2013 R U 09.03.2017 (72) Автор(ы): СУГИЯМА, Такеси (JP), ХАРАДА, Такао (JP), СИИНО, Дзунити (JP), МИМУРА, Цуйоси (JP), ИИДЗИМА, ...

Device for cooling hot-briquetted iron

FIELD: metallurgy. SUBSTANCE: invention relates to a device for cooling hot-briquetted iron. The cooling device comprises a cylindrical rotating housing tilted so that the outlet section through which the cooled hot-briquetted iron is discharged is facing upwards, and containing a liquid level control plate made under the hot-briquetted iron loading area and designed to hold a pre-selected coolant, a blade made along the inner circumferential surface of the rotating housing and designed to move the hot-briquetted iron injected into it in the direction of the outlet section, and a coolant spray module containing several spray nozzles that regulate the amount of coolant sprayed inwards from the outlet section in various ways. EFFECT: invention makes it possible to cool hot-briquetted iron as efficiently as possible and thereby minimize the consumption of coolant. 9 cl, 6 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 758 893 C1 (51) МПК C21B 13/08 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК C21B 13/08 (2021.08) (21)(22) Заявка: 2020127405, 17.08.2020 (24) Дата начала отсчета срока действия патента: (73) Патентообладатель(и): ДЖИЛ МАШИНЕРИ КО., ЛТД. (KR) Дата регистрации: 02.11.2021 Приоритет(ы): (30) Конвенционный приоритет: 09.06.2020 KR 10-2020-0069632 (45) Опубликовано: 02.11.2021 Бюл. № 31 2 7 5 8 8 9 3 R U (54) УСТРОЙСТВО ДЛЯ ОХЛАЖДЕНИЯ ГОРЯЧЕБРИКЕТИРОВАННОГО ЖЕЛЕЗА (57) Реферат: Изобретение относится к устройству для поверхности вращающегося корпуса и охлаждения горячебрикетированного железа. предназначенную для перемещения вводимого в Устройство для охлаждения содержит него горячебрикетированного железа в цилиндрический вращающийся корпус, направлении выходного участка, и модуль наклоненный таким образом, чтобы выходной распыления охлаждающей жидкости, содержащий участок, через который выгружают охлажденное несколько распылительных форсунок, различным горячебрикетированное железо, был обращен образом ...

Apparatus for manufacturing molten irons and method for manufacturing molten irons using the same

本发明涉及一种用于制造铁水的设备和一种使用该设备制造铁水的方法。根据本发明的用于制造铁水的方法包括：通过将第一铁矿石装入流化床还原反应器中来还原所述第一铁矿石；通过压制经还原的第一铁矿石来制造压制铁；通过将第二铁矿石和所述压制铁装入填充床还原反应器中而对所述第二铁矿石以及所述压制铁进行还原，所述第二铁矿石的尺寸大于所述第一铁矿石的尺寸；将经还原的压制铁和所述第二铁矿石装入与所述填充床还原反应器相连的熔炉-气化器中；制备块状含碳材料作为热源，用于熔化经还原的压制铁和所述第二铁矿石；将所述块状含碳材料装入所述熔炉－气化器中，然后形成煤填充床；以及将氧气通过安装在所述熔炉－气化器中的鼓风口注入，然后从所述压制铁和所述第二铁矿石制造铁水。

Apparatus for producing agglomerates of reduced product containing reduced iron powder and pig iron production device provided with the same

Apparatus and method for manufacturing molten irons

본 발명에 따른 용철 제조 장치는 고로와, 고로에서 발생하는 고로 가스를 취입하여 분철광석을 가열하는 유동 가열로와, 유동 가열로에서 가열된 분철광석과 탄재를 혼합하는 열간 혼합기 및 열간 혼합기에서 혼합된 분철광석과 탄재를 괴성화하는 열간 성형기를 포함한다. The molten iron manufacturing apparatus according to the present invention is mixed with a blast furnace, a flow furnace for blowing blast furnace gas generated in the blast furnace to heat the iron ore, and a hot mixer and a hot mixer for mixing the iron iron ore and carbonaceous material heated in the flow furnace And a hot forming machine for compacting the prepared iron ore and carbonaceous material. 제철공정, 고로, 장입원료, 소결광, 코크스, 탄재내장, 브리켓, 용융환원 Steelmaking Process, Blast Furnace, Charge Raw Material, Sintered Ore, Coke, Charcoal Interior, Briquette, Melt Reduction

Metallic iron obtaining method

FIELD: processes for receiving metallic iron by thermal reduction of iron oxides. SUBSTANCE: method comprises steps of heating aggregated charge materials including carbonaceous reducing agent and iron oxide- containing material in reducing melting furnace with movable hearth, reducing and melting iron oxides in charge materials. Reducing melting furnace includes at least three zones in direction of hearth motion. At least one zone, first in hearth motion direction is zone for solid phase reduction. At least one zone last in hearth motion direction is carburizing and melting zone. Between said two zones there is zone for reduction soaking at temperature controlled in range 1200 -1500°C. Invention provides minimized secondary oxidation of metallic iron, minimized FeO concentration in melt slag in final phase of solid phase reduction, lowered erosion (caused by melt FeO) of refractory material of hearth. EFFECT: effective obtaining of metallic iron with high purity degree of iron and with increased yield of product. 7 cl, 5 dwg, 1 ex ÐÎÑÑÈÉÑÊÀß ÔÅÄÅÐÀÖÈß (19) RU (11) 2 279 483 (13) C2 (51) ÌÏÊ C21B 13/08 (2006.01) ÔÅÄÅÐÀËÜÍÀß ÑËÓÆÁÀ ÏÎ ÈÍÒÅËËÅÊÒÓÀËÜÍÎÉ ÑÎÁÑÒÂÅÍÍÎÑÒÈ, ÏÀÒÅÍÒÀÌ È ÒÎÂÀÐÍÛÌ ÇÍÀÊÀÌ (12) ÎÏÈÑÀÍÈÅ ÈÇÎÁÐÅÒÅÍÈß Ê ÏÀÒÅÍÒÓ (21), (22) Çà âêà: 2004109580/02, 17.06.2002 (30) Êîíâåíöèîííûé ïðèîðèòåò: 31.08.2001 JP 2001-263944 (73) Ïàòåíòîîáëàäàòåëü(è): ÊÀÁÓÑÈÊÈ ÊÀÉÑß ÊÎÁÅ ÑÅÉÊÎ ÑÅ (JP) (43) Äàòà ïóáëèêàöèè çà âêè: 20.05.2005 R U (24) Äàòà íà÷àëà îòñ÷åòà ñðîêà äåéñòâè ïàòåíòà: 17.06.2002 (72) Àâòîð(û): ÊÈÊÓÒÈ Ñîèòè (JP), ÒÎÊÓÄÀ Êîäçè (JP), ÊÎÁÀßÑÈ Èñàî (JP) (45) Îïóáëèêîâàíî: 10.07.2006 Áþë. ¹ 19 2 2 7 9 4 8 3 (56) Ñïèñîê äîêóìåíòîâ, öèòèðîâàííûõ â îò÷åòå î ïîèñêå: ÅÐ 1138789 À, 27.03.2001. WO 99/46410 A1, 16.09.1999. WO 97/06281 A1, 20.02.1997. US 5567224 A, 22.10.1996. SU 1674694 A3, 30.08.1991. (85) Äàòà ïåðåâîäà çà âêè PCT íà íàöèîíàëüíóþ ôàçó: 31.03.2004 2 2 7 9 4 8 3 R U (87) Ïóáëèêàöè PCT: WO 03/020988 (13.03.2003) C 2 C 2 (86) Çà âêà PCT: JP 02/05997 (17.06. ...

BENTONITE-BOUNDED PRESS LEGS BELOW OXIDIC ICE CARRIER

Die vorliegende Erfindung betrifft ein Verfahren zum Herstellen von eisenoxidhältigen Presslingen aus unterkörnigen oxidischen Eisenträgern durch Herstellung einer Mischung welche unterkörnige oxidische Eisenträger, Bentonit als Binder, und Wasser umfasst, Pressen der Mischung, und Härtung der bei der Pressung erhaltenen Grünpresslinge, sowie die durch das Verfahren hergestellten Presslinge und die Verwendung der Presslinge als stückiger Eisenträger. Erfindungsgemäß wird die Mischung nach Zusammenführung ihrer Komponenten einem mindestens 3-minütigen bis zu 30 minütigen Knetvorgang unterworfen wird, an den sich die Pressung anschließt. Die Presslinge werden ohne Maukvorgang durchgeführt. The present invention relates to a process for producing iron oxide-containing compacts from lower-grained oxidic iron carriers by preparing a mixture comprising lower-grained oxidic iron carriers, bentonite as binder, and water, pressing the mixture, and curing the green compacts obtained in the pressing, as well as by the method produced compacts and the use of the compacts as lumpy iron carrier. According to the invention, after combining its components, the mixture is subjected to a kneading process of at least 3 minutes up to 30 minutes, followed by pressing. The compacts are carried out without mucking.

Process and installation for making binderless heating briquettes

Process for briquetting a material containing sponge iron

Durch Direktreduktion erzeugtes Schwammeisen enthaltendes Material wird zum Einsatz in metallurgische Öfen im gekühlten Zustand unter Zusatz von verdünnter Schwefelsaüre als Bindemittel brikettiert. Das zu brikettierende Material enthält mehr als 40% metallisches Eisen. Material containing sponge iron produced by direct reduction is briquetted for use in metallurgical furnaces in the cooled state with the addition of dilute sulfuric acid as a binder. The material to be briquetted contains more than 40% metallic iron.

Discharge control apparatus for ore reducing reactor

METHOD FOR PRODUCING METAL IRON

ÐÎÑÑÈÉÑÊÀß ÔÅÄÅÐÀÖÈß (19) RU (51) ÌÏÊ 7 (11) 2004 109 580 (13) A C 21 B 13/10 ÔÅÄÅÐÀËÜÍÀß ÑËÓÆÁÀ ÏÎ ÈÍÒÅËËÅÊÒÓÀËÜÍÎÉ ÑÎÁÑÒÂÅÍÍÎÑÒÈ, ÏÀÒÅÍÒÀÌ È ÒÎÂÀÐÍÛÌ ÇÍÀÊÀÌ (12) ÇÀßÂÊÀ ÍÀ ÈÇÎÁÐÅÒÅÍÈÅ (21), (22) Çà âêà: 2004109580/02, 17.06.2002 (71) Çà âèòåëü(è): ÊÀÁÓÑÈÊÈ ÊÀÉÑß ÊÎÁÅ ÑÅÉÊÎ ÑÅ (JP) (30) Ïðèîðèòåò: 31.08.2001 JP 2001-263944 (43) Äàòà ïóáëèêàöèè çà âêè: 20.05.2005 Áþë. ¹ 14 (86) Çà âêà PCT: JP 02/05997 (17.06.2002) (74) Ïàòåíòíûé ïîâåðåííûé: Åãîðîâà Ãàëèíà Áîðèñîâíà Àäðåñ äë ïåðåïèñêè: 129010, Ìîñêâà, óë. Á.Ñïàññêà , 25, ñòð.3, ÎÎÎ "Þðèäè÷åñêà ôèðìà Ãîðîäèññêèé è Ïàðòíåðû", ïàò.ïîâ. Ã.Á. Åãîðîâîé R U Ôîðìóëà èçîáðåòåíè 1. Ñïîñîá ïðîèçâîäñòâà ìåòàëëè÷åñêîãî æåëåçà, âêëþ÷àþùèé ýòàïû íàãðåâà øèõòîâûõ ìàòåðèàëîâ, âêëþ÷àþùèõ óãëåðîäèñòûé âîññòàíàâëèâàþùèé àãåíò è ñîäåðæàùèé îêñèä æåëåçà ìàòåðèàë, â âîññòàíîâèòåëüíîé ïëàâèëüíîé ïå÷è ñ ïîäâèæíûì ïîäîì, âîññòàíîâëåíèå è ïëàâëåíèå îêñèäîâ æåëåçà â øèõòîâûõ ìàòåðèàëàõ, ïðè÷åì óïîì íóòà âîññòàíîâèòåëüíà ïëàâèëüíà ïå÷ü ðàçäåëåíà, ïî ìåíüøåé ìåðå, íà òðè çîíû â íàïðàâëåíèè ïåðåìåùåíè ïîäà, ïî ìåíüøåé ìåðå, îäíà èç óïîì íóòûõ çîí, ðàñïîëîæåííà âíà÷àëå ïî íàïðàâëåíèþ ïåðåìåùåíè ïîäà, âë åòñ çîíîé òâåðäîôàçíîãî âîññòàíîâëåíè , è, ïî ìåíüøåé ìåðå, îäíà èç óïîì íóòûõ çîí, ðàñïîëîæåííà â êîíöå ïî íàïðàâëåíèþ ïåðåìåùåíè ïîäà, âë åòñ çîíîé íàóãëåðîæèâàíè è ïëàâëåíè , à ìåæäó çîíîé òâåðäîôàçíîãî âîññòàíîâëåíè è çîíîé íàóãëåðîæèâàíè è ïëàâëåíè ïðåäóñìîòðåíà çîíà âîññòàíîâèòåëüíîé âûäåðæêè. 2. Ñïîñîá ïî ï.1, ïðè÷åì òåìïåðàòóðà àòìîñôåðû è/èëè ñîñòàâ ãàçîâîé àòìîñôåðû â çîíå âîññòàíîâèòåëüíîé âûäåðæêè ðåãóëèðóþòñ . 3. Ñïîñîá ïî ï.1 èëè 2, ïðè÷åì â çîíå âîññòàíîâèòåëüíîé âûäåðæêè â ïå÷ü ââîäèòñ àòìîñôåðíûé ìîäèôèêàòîð. 4. Ñïîñîá ïî ï.1 èëè 2, ïðè÷åì â çîíå íàóãëåðîæèâàíè è ïëàâëåíè â ïå÷ü ââîäèòñ àòìîñôåðíûé ìîäèôèêàòîð. 5. Ñïîñîá ïî ï.1 èëè 2, ïðè÷åì àòìîñôåðíûé ìîäèôèêàòîð ââîäèòñ â ïå÷ü ïîñðåäñòâîì èñïîëüçîâàíè ðàçäåëèòåëüíîé ñòåíêè ìåæäó çîíàìè. 6. Ñïîñîá ïî ï.1 èëè 2, ïðè÷åì ðàçäåëèòåëüíà ñòåíêà ìåæäó çîíàìè ïðåäóñìîòðåíà ñ îäíèì èëè ...

Process for the hot granulation of metal-containing material particles, such as sponge iron, metallurgical dust, metallurgical residues etc.

Apparatus for manufacturing molten iron and method for manufacturing molten iron

根据本发明的实施方案的一种用于制造铁水的装置包括：i)至少一个流化床还原反应器，其还原并塑化细铁；ii)用于制造压紧铁的装置，其使细铁成型并制造压紧铁；iii)熔化-气化炉，压紧铁被装入该熔化-气化炉中且氧气被注入该熔化-气化炉中；iv)还原气体供给线，其将从熔化-气化炉中排出的还原气体供给到流化床还原反应器；以及v)微粒注射设备，其将粘性减小材料注入还原气体，以使包含在还原气体中的粉尘的粘性减小。所述熔化-气化炉制造铁水。

Method and device for hot material bulk cooling

FIELD: cooling of briquetted sponge iron. SUBSTANCE: at the stage of cooling of hot briquetted sponge iron, it is treated with optimal use of cooling agent in form of gaseous agent exclusively to obtain soft cooling. At the second cooling stage, material is sprayed with liquid cooling agent to cool to desired final temperature. Provision is made for saving cooling component by its most efficiency utilization and maximum reduction of formation of fine particles of cooled product to preserve its high quality. Device for embodiment of claimed method has gas-permeable carrier (conveyor belt or grate in form of rotary cooler) and means surrounding the carrier for supply of gaseous cooling agent. Device is also provided with nozzles for spraying liquid cooling agent. Nozzles may be one- or two-component for supply to sponge iron of liquid and gaseous cooling agents. EFFECT: saved cooling agent due to its most efficient utilization in obtaining quality final product with minimal formation of fine particles of cooled material, higher service life of equipment due to its resistance to wear. 16 cl, 3 dwg ДРЕУЗСУТС ПЧ ГЭ РОССИЙСКОЕ АГЕНТСТВО ПО ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (19) (51) МПК ВИ” 2 142 517‘ 13) СЛ С 22 В 1/26, С 21 В 13/00 12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ РОССИЙСКОЙ ФЕДЕРАЦИИ (21), (22) Заявка: 97114136/02, 22.01.1996 (24) Дата начала действия патента: 22.01.1996 (30) Приоритет: 23.01.1995 АТ А1О6/95 (46) Дата публикации: 10.12.1999 (56) Ссылки: УР А 06316718, 15.11.94. ДР А 56-163209, 15.12.81. $Ц А 349112, 23.11.12. ЗЦА 569619, 21.09.77. Ц А 1533443, 12.05.87. ЕК А, 1315251, 19.04.63. ЕК А, 1215666, 20.04.60. УР А 59170213, 26.09.84. (85) Дата перевода заявки РСТ на национальную фазу: 25.08.97 (86) Заявка РСТ: АТ 96/00008 (22.01.96) (87) Публикация РСТ: \/О 96/23081 (01.08.96) (98) Адрес для переписки: 129010, Москва, ул.Б.Спасская 25, стр.3, ООО "Городисский и Партнеры" Емельянову С.И. (71) Заявитель: Фоест-Альпине Индустрианлагенбау ГмбХ (АТ) (72) Изобретатель: ...

Manufacturing appratus of molten iron reducing emission of carbon dioxide and manufacturing method of the same

본 발명의 일 실시예는, 고로에서 수소에 의한 환원 효율을 증가시켜 수소에 의한 탄소 대체를 극대화함으로써, 고로에서의 탄소계 환원제 물질 사용 및 이로 인한 이산화탄소 배출량을 저감하고, 미활용되어 배출되는 수소를 포함한 배가스를 추가적으로 활용하는 방안을 제시함으로써 배가스의 자원화 및 이산화탄소 저감 효과를 극대화할 수 있는 용철 제조장치 및 그 제조방법을 개시한다.

Hot-briquetting installation

본 발명은 특히 직접 환원철을 위한 열간 성형 또는 열간 압밀을 위한 설비에 관한 것으로서, 하나 이상의 롤러 프레스(2)를 갖는 적어도 하나의 제1 프레스 열(1)과, 하나 이상의 롤러 프레스(4)를 갖는 적어도 하나의 제2 프레스 열(3)을 갖고, 제1 프레스 열(1) 아래에 있는 적어도 하나의 제1 냉각 컨베이어(7)와, 제2 프레스 열(3) 아래에 있는 적어도 하나의 제2 냉각 컨베이어(8)를 가지며, 각각의 개별적인 롤러 프레스(2, 4)와 관련된 여러 개의 재료 도관(6)을 구비하며, 롤러 프레스(2, 4)에서 나오는 성형된 또는 압밀된 재료는 롤러 프레스를 통해 냉각 컨베이어(7, 8)로 방출된다. 재료 도관(6)은 제1 프레스 열(1) 및 제2 프레스 열(3)의 롤러 프레스(2, 4)로부터의 재료가 선택적으로 제1 냉각 컨베이어(7)로 또는 제2 냉각 컨베이어(8)로 방출될 수 있도록 조절될 수 있는 하나 이상의 전환기(9)를 구비한다. The invention relates in particular to a plant for hot forming or hot consolidation for direct reduced iron, comprising at least one first press row (1) with at least one roller press (2) and at least one roller press (4) at least one first cooling conveyor (7) having at least one second press row (3) below the first press row (1) and at least one second cooling conveyor (7) below the second press row (3) having a cooling conveyor (8), with several material conduits (6) associated with each individual roller press (2, 4), the formed or compacted material exiting the roller press (2, 4) through the cooling conveyors (7, 8). The material conduit 6 is configured such that the material from the roller presses 2 , 4 of the first press row 1 and the second press row 3 is selectively routed to the first chilled conveyor 7 or to the second chilled conveyor 8 . ) with one or more diverters 9 which can be adjusted to be released into

Utilize the direct-reduction of coal gasification and coke-stove gas

用于制备直接还原铁(DRI)的方法和装置，其包括：使用煤、氧气、蒸汽和第一焦炉煤气(COG)物流作为输入到煤气化炉的输入物在煤气化炉中产生还原性气体；和将所述还原性气体递送到竖炉并且将铁矿石团块暴露于所述还原性气体以形成金属铁团块。所述方法还包括将第二COG物流直接递送到所述竖炉。

Processing particles from foundry waste with a metal content, by converting into strip plate at high temperatures in roller press, to be broken down into granules

To give a hot compacting action to particles (5) with a metal content e.g. sponge iron, foundry dust and residue etc., the particles are fed to a roller press (1) to form a coherent strip plate (7). The material is reduced to a granulate (12) by breaking down the strip plate. The particles pass through the roller press at a temperature of 450-900 deg C and preferably 600-700 deg C.

Integrated iron and steelmaking system and method

본 발명은 일관제철시스템 및 일관제철방법에 관한 것으로서, 보다 상세하게는 원료처리과정 및 제선공정에서 발생하는 환경오염물질의 발생량을 현저히 감소시킬 뿐만 아니라, 에너지 사용량을 감소함으로써 환경친화적인 일관제철시스템 및 일관제철방법에 관한 것이다. 본 발명의 일측면에 의하면,각각 하나 이상의 유동환원로를 포함하여 분철광석을 환원시켜 환원분철광석을 제조하도록 구성되는 제1유동환원로설비 및 제2유동환원로설비를 포함하는 환원분철광석제조장치; 상기 제1유동환원로설비 및 제2유동환원로설비에서 환원된 분철광석을 각각 공급받아 괴상화하여 괴상화환원철을 제조하도록 구성되는 제1괴상화장치 및 제2괴상화장치; 및 상기 제1괴상화장치에서 괴상화된 괴상화환원철을 용융하여 용선을 제조하는 용융로를 포함하는 제선장치와 상기 제선장치에서 제조된 용선 및 괴상화환원철을 공급받아 용강을 제조하는 제강장치를 포함하는 일관제철시스템이 제공된다. 본 발명에 의하면, 원료환경에 유연하게 대처할 수 있을 뿐만 아니라 환경오염을 현저히 저감할 수 있는 일관제철시스템 및 이를 이용한 일관제철방법을 제공할 수 있다. The present invention relates to an integrated steel making system and a co-milling method, and more particularly, to an integrated steel making system and an integrated steel making method which are capable of reducing the amount of environmental pollutants generated in a raw material processing and a ladle- And a consistent steel making method. According to an aspect of the present invention, each of the reduced flow iron ore, including one or more flow reduction reactor to reduce the reduced iron ore manufacturing reduced iron ore comprising a first flow reduction reactor facility and a second flow reduction reactor facility configured to produce reduced iron ore Device; A first bulking device and a second bulking device configured to produce the bulk reducing iron by receiving and bulking the reduced iron ore from the first and second flow reducing facility; And a steelmaking apparatus including a melting furnace for melting molten mass reduced iron that is agglomerated in the first massaging apparatus and a molten iron for producing molten iron; and a steelmaking apparatus for receiving molten iron and mass reduced iron produced in the apparatus for manufacturing molten steel. An integrated steelmaking system is provided. According to the present invention, it is possible to provide an integrated steelmaking system and an integrated steelmaking method using the same, which can flexibly cope with the raw material ...

Continuous HBI Manufacturing Unit with concurrent heating Unit

본 발명은 보열장치를 구비한 연속식 고온 브리켓철(HBI) 제조장치에 관한 것으로, 직접환원철 분말을 이용한 고온 브리켓철(HBI) 생산을 위한 브리켓철 제조장치에 있어서, 직접환원철 분말을 공급받아 일정 온도 상태를 유지시켜주면서 연속적으로 직접환원철 분말을 성형하기 위하여 공급하는 것으로, 상기 환원로에서 배출된 상태에 해당하는 온도 또는 해당 온도 이상의 온도로 유지될 수 있도록 히터부를 통해 제어하며, 상기 환원로에서 공급되는 직접환원철 분말의 외부 공기 접촉을 방지하기 위하여 불활성 상태를 유지하는 보열로, 상기 보열로를 통해 일정 온도를 유지하면서 공급된 직접환원철 분말을 일정크기로 열간 성형하기 위하여 챔버 내에 유입된 직접환원철 분말을 가압 성형하여 일정 크기의 성형체로 성형하는 열간성형기 및 상기 열간성형기를 통해 성형된 브리켓철(HBI)을 철광 재료화 하기 위해 용융하는 전기로를 포함하여 구성된다. The present invention relates to a continuous high-temperature briquette iron (HBI) manufacturing apparatus having a heat-retaining device. It is continuously supplied to form directly reduced iron powder while maintaining the temperature state. A heating furnace that maintains an inactive state in order to prevent the supplied directly reduced iron powder from contacting the outside air, and the direct reduced iron introduced into the chamber to hot-form the supplied directly reduced iron powder into a predetermined size while maintaining a constant temperature through the heating furnace. It is configured to include a hot forming machine that presses and molds powder into a compact of a certain size, and an electric furnace that melts briquette iron (HBI) formed through the hot forming machine to make iron ore material.

An apparatus for manufacturing compacted irons of reduced materials comprising fine direct reduced irons and an apparatus for manufacturing molten irons using the same

본 발명은 분환원철 함유 환원체의 괴성체 제조 장치 및 이를 이용한 용철제조장치에 관한 것이다. 이를 위하여 본 발명의 괴성체 제조 장치는, 상호 이격되어 형성된 갭으로 유입되는 분환원철 함유 환원체를 압축하여 괴성체를 제조하는 한 쌍의 롤, 한 쌍의 롤의 각각의 로터에 조립되어 한 쌍의 롤의 측면에 위치하여 상호 대향하는 베어링 블록, 베어링 블록 사이에 삽입되어 갭을 조절하며 갭조절용 판을 포함하는 롤갭조정장치, 및 베어링 블록의 사이에 위치하여 롤갭조정장치가 관통되고 중심에 형성된 홈에 롤갭조정장치의 갭조절용 판이 노출되는 롤갭조정장치 지지대를 포함한다. 이와 같은 본 발명을 통하여 품질이 양호한 괴성체를 제조할 수 있다. 괴성체 제조 장치, 용철제조장치, 롤갭조정장치 The present invention relates to an apparatus for producing compacted iron containing reduced iron, and an apparatus for manufacturing molten iron using the same. To this end, the compacted material manufacturing apparatus of the present invention is assembled to a pair of rolls, a pair of rolls of each pair of rolls to produce compacted material by compressing the reducing iron-containing reducing body flowing into the gap formed to be spaced apart from each other Located in the side of the roll of the bearing block facing each other, the gap between the bearing block is inserted between the roll gap adjusting device including a gap adjusting plate, and the gap between the bearing block and the roll gap adjusting device is penetrated and formed in the center And a roll gap adjusting device support, in which the gap adjusting plate of the roll gap adjusting device is exposed in the groove. Through the present invention as described above, a compacted material having good quality can be produced. Compacted material manufacturing device, molten iron manufacturing device, roll gap adjusting device

Integrated iron and steelmaking system and method using electric arc furnace

본 발명은 일관제철시스템 및 일관제철방법에 관한 것으로서, 보다 상세하게는 제강과정에서 철광석의 환원과 승온을 모두 일으킴으로써 매우 콤팩트하고 환경친화적인 일관제철시스템 및 일관제철방법에 관한 것이다. 본 발명의 일측면에 따른 일관제철시스템은 하나 이상의 유동환원로를 포함하여 분철광석을 환원시켜 환원분철광석을 제조하도록 구성되는 유동환원로설비를 포함하는 환원분철광석제조장치; 및 유동환원로설비에서 환원된 분철광석을 공급받아 괴상화하여 괴상화환원철을 제조하도록 구성되는 괴상화장치를 포함하는 괴상화환원철제조장치와 괴상화환원철제조장치에서 제조된 괴상화환원철을 공급받아 용강을 제조하는 전기로를 포함하는 것을 특징으로 한다. 본 발명에 의하면, 원료환경에 유연하게 대처할 수 있을 뿐만 아니라 환경오염을 현저히 저감할 수 있으며, 전기로에서 철광석을 최종 용융환원처리함으로써 콤팩트한 일관제철시스템 및 이를 이용한 일관제철방법을 제공할 수 있다. The present invention relates to an integrated steelmaking system and an integrated steelmaking method, and more particularly, to a very compact and environmentally friendly integrated steelmaking system and an integrated steelmaking method by causing both the reduction and the elevated temperature of iron ore in the steelmaking process. In accordance with an aspect of the present invention, an integrated steelmaking system includes a reduced iron ore manufacturing apparatus including a flow reducing reactor facility configured to reduce iron ore including one or more flow reducing furnaces to produce reduced iron ore; And a mass reduction iron manufacturing apparatus including a mass reduction apparatus configured to form a mass reduction iron by receiving reduced iron ore from a flow reduction furnace facility and a mass reduction reduction iron manufactured in the mass reduction iron manufacturing apparatus. It characterized in that it comprises an electric furnace for producing molten steel. According to the present invention, it is possible not only to flexibly cope with the raw material environment, but also to significantly reduce environmental pollution, and to provide a compact integrated steelmaking system and an integrated steelmaking method using the same by final melt reduction treatment of iron ore in an electric furnace.

Iron ore fluidized bed reduction furnace

The reduction furnace comprises; a single type fluidized bed furnace(10) to dry and preheat the iron ore; first cyclone(60) to collect a fine iron contained in a exhaust gas from the furnace(10); twin type 2nd fluidized bed reactor(20) to prereduce the iron ore from the furnace(10) and the first cyclone(60); twin type 2nd fluidized bed reactor(30) to prereduce the iron ore from the reactor(20) forming a bubble fluidized bed by the exhaust gas of fourth cyclone(100); 2nd cyclone(70) to collect and recycle the iron ore contained in a exhaust gas of the reactor(30) into a bottom of third fluidized bed reactor(40), third fluidized bed reactor(40) to reduce the prereduced iron ore particles from the reactor(20) forming a bubble fluidized bed by a melt furnace exhaust gas; another twin type third fluidized bed reactor(50) to reduce a prereduced iron ore particles from the reactor(30) forming a bubble fluidized bed by an exhaust gas of the melt furnace; a third cyclone(90) to recycle the iron ore particles from contained in the exhaust gas of the reactor(40) into a twin type third fluidized bed reactor(50), an internal cyclone(80) to recycle an ultrafine iron ore into the bottom of the reactor(50) and the fourth cyclone to recycle the ultrafine iron or particles residue in the internal cyclone into the reactor(50) or to supply to the bottom of the melting furnace.

How to treat high-temperature briquettes of granular sponge iron

과립형 해면철은 고온 브리켓을 형성하기 위하여 600℃ 내지 850℃의 온도로 롤러 프레스에 공급된다. 서로 일정한 거리로 배치된 고온 브리켓을 갖는 해면철의 스트립 구조가 생성된다. 상기 스트립 구조를 파괴하므로써, 고온 브리켓은 서로 분리되며, 이에 따라 스트립 구조의 파편을 얻을 수 있다. 파편의 적어도 일부와 고온 브리켓은 20℃ 내지 400℃의 온도로 냉각되며, 냉각된 브리켓과 파편은 회전형 드럼을 통과한다. 회전형 드럼에서, 브리켓과 파편의 미립자가 생산된다. 이어서, 이러한 미립자는 자연발화성을 나타내는 브리켓과 파편으로부터 분리된다. The granular sponge iron is fed to the roller press at a temperature of 600 ° C to 850 ° C to form a hot briquet. A strip structure of sponge iron with high temperature briquettes arranged at a constant distance from each other is produced. By breaking the strip structure, the hot briquettes are separated from each other, and thus a piece of strip structure can be obtained. At least a portion of the debris and the hot briquettes are cooled to a temperature between 20 ° C and 400 ° C, and the cooled briquettes and debris pass through a rotatable drum. In rotating drums, brittle particles and fragments are produced. These particulates are then separated from briquettes and debris that exhibit spontaneous ignitability.

METHOD FOR PRODUCING PIG IRON, DEVICE FOR ITS PRODUCTION AND PIG IRON OBTAINED BY THE SPECIFIED METHOD

РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2018 141 749 A (51) МПК C21B 11/10 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21)(22) Заявка: 2018141749, 29.05.2017 (71) Заявитель(и): ТЕНОВА С.П.А. (IT) Приоритет(ы): (30) Конвенционный приоритет: 31.05.2016 IT 102016000056295 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 27.11.2018 R U (43) Дата публикации заявки: 27.05.2020 Бюл. № 15 (72) Автор(ы): МЕМОЛИ Франческо (US), ДЖАВАНИ Чезаре (IT), РЕАЛИ Сильвио Мариа (IT), ШУП Кайл Джеймс (US) (86) Заявка PCT: (87) Публикация заявки PCT: WO 2017/207472 (07.12.2017) R U (54) СПОСОБ ПРОИЗВОДСТВА ЧУГУНА, УСТРОЙСТВО ДЛЯ ЕГО ПРОИЗВОДСТВА И ЧУГУН, ПОЛУЧЕННЫЙ УКАЗАННЫМ СПОСОБОМ (57) Формула изобретения 1. Способ производства чугуна, начиная с предварительно восстановленной железной руды (ПВЖ), посредством электродуговой печи (ЭДП), предусматривающий следующие стадии: (a) приготовление шихты предварительно восстановленной железной руды (ПВЖ), характеризующейся металлизацией выше 90% и содержащей более 2,8 мас.% углерода, причем по меньшей мере 80% указанного углерода находятся в связанном с железом состоянии в виде цементита Fe3C, (b) завалка шихты предварительно восстановленной железной руды (ПВЖ) в электродуговую печь (ЭДП), (c) плавка шихты ПВЖ для получения жидкого чугуна, при этом указанный жидкий чугун характеризуется предопределенным фактическим содержанием углерода, причем по меньшей мере 80 мас.% указанного фактического содержания углерода в чугуне получают из углерода в шихте предварительно восстановленной железной руды (ПВЖ), и при этом стадию (c) осуществляют в восстановительной атмосфере и в плавильной камере электродуговой печи (ЭДП) при избыточном внутреннем давлении, создаваемом газами, продуцируемыми восстановительными реакциями, протекающими на стадии (с). Стр.: 1 A 2 0 1 8 1 4 1 7 4 9 A Адрес для переписки: 129090, Москва, пр-кт Мира, 6, ООО "Патентно-правовая фирма "ЮС" 2 0 1 8 1 4 1 7 4 9 EP 2017/ ...

High-temperature reduced iron cooler and fluidized bed furnace reduction device of iron ore with this cooler

본 발명은 입도가 넓은 분철광석을 환원하는 유동층로식 환원로장치등에서 환원된 고온의 환원철을 냉각시키는 장치 및 이 냉각장치가 장착된 유동층로식 환원장치에 관한 것으로써, 고온의 환원철을 보다 경제적으로 냉각시킬 수 있는 고온의 환원철 냉각장치 및 이 냉각장치가 장착된 분철광석의 유동층로식 환원장치를 제공하고자 하는데, 그 목적이 있다. 본 발명은 예비환원로에서 최종환원된 고온의 환원철을 수용하여 1차로 냉각시키도록 이루어지는 1차 환원철 냉각부,1차로 냉각된 환원철을 최종냉각시키는 최종냉각부 및 상기 1차환원철 냉각부에서 냉각된 환원철을 최종 냉각부로 유도해주는 환원철 유도부를 포함하고; 상기 1차 환원철냉각부는 냉각수 공급원과 연결되어 내부로 냉각수가 공급되어 하강하는 환원철을 냉각시키는 하나 또는 다수개의 냉각관을 포함하고; 그리고 상기 최종냉각부는 냉각수 공급원과 연결되어 있는 냉각수 인입관 및 냉각수를 배출시키는 냉각수배출관, 과 그 일단은 상기 냉각수 인입관에 연결되고, 그 타단은 상기 냉각수 배출관에 연결되어 그 내부로 냉각수가 흐르고 환원철의 하강 통로를 형성하도록 코일링되어 있는 냉각코일을 포함하여 구성되는 고온의 환원철 냉각장치 및 이 냉각장치가 구비된 분철광석의 유동층로식 환원장치를 그 요지로한다.

An apparatus for manufacturing a molten iron directly using fine or lump coals and fine iron ores, the method thereof, the integrated steel mill using the same and the method thereof

본 발명은 분상 또는 괴상의 일반탄 및 분상의 철함유 광석을 직접 사용한 용철제조장치 및 그 용철제조방법과 이를 이용한 일관제철장치 및 그 일관제철방법에 관한 것이다. 이를 위하여 본 발명에 따른 용철제조방법은, 분상의 철함유 광석 및 부원료를 혼합 및 건조하여 철함유 혼합체를 제조하는 단계, 철함유 혼합체를 순차적으로 연결된 다단의 유동환원로를 통과시키면서 환원 및 소성하여 환원체로 변환하는 단계, 환원체를 고온 괴성화하여 괴성체를 제조하는 단계, 괴성체를 용융시킬 열원으로서 괴탄과 분상의 일반탄을 괴성화한 성형탄을 용융가스화로에 장입하여 석탄충전층을 형성하는 단계, 다단의 유동환원로와 연결된 용융가스화로에 괴성체를 장입하고, 용융가스화로에 산소를 취입하여 용철을 제조하는 단계, 및 용융가스화로에서 배출되는 환원용 석탄가스를 유동환원로에 공급하는 단계를 포함한다. The present invention relates to an apparatus for manufacturing molten iron using powdered or bulky ordinary coal and powdered iron ore directly, a method for manufacturing molten iron thereof, an integrated iron manufacturing apparatus using the same, and an integrated iron manufacturing method thereof. To this end, the method for manufacturing molten iron according to the present invention comprises the steps of preparing and mixing iron powder ore and secondary raw materials to produce an iron-containing mixture, and reducing and calcining the iron-containing mixture while passing through a multi-stage flow reduction reactor. Converting to a reducing body, forming a compacted body by high temperature compacting the reduced body, and charging coal briquettes of compacted coal and powdered ordinary coal as a heat source for melting the compacted material into a molten gasifier to form a coal-filled layer. In the step, the compacted material is charged into a melt gasifier connected to a multi-stage flow reduction reactor, the molten gas is blown into oxygen to produce molten iron, and the reducing coal gas discharged from the melt gasifier is transferred to the fluidized reactor. Supplying. 용철제조방법, 용철제조장치, 일관제철장치, 일관제철방법 Molten iron manufacturing method, molten iron manufacturing equipment, integrated iron making equipment, integrated iron making method

Method and apparatus for manufacturing molten iron

탄화수소가스를 사용해 개질가스를 제조함으로써 환원로에서의 환원철의 환원력을 향상시킨 용철제조방법과 용철제조장치를 제공한다. 용철제조방법은 i) 철광석을 환원철로 변환하는 환원로에서 배출되는 배가스를 제공하는 단계, ii) 배가스를 분기한 또다른 배가스와 탄화수소가스를 혼합한 혼합 가스를 제공하는 단계, iii) 혼합 가스를 개질하여 개질 가스를 제공하는 단계, 및 iv) 환원로와 연결되어 환원철을 공급받는 용융가스화로로부터 배출되는 환원 가스와 개질 가스를 혼합하여 환원로에 취입하는 단계를 포함한다. Provided is a molten iron manufacturing method and a molten iron manufacturing apparatus in which reforming gas is produced by using a hydrocarbon gas to improve the reducing power of reduced iron in a reduction furnace. The method for producing molten iron includes the steps of i) providing an exhaust gas discharged from a reducing furnace for converting iron ore to reduced iron, ii) providing a mixed gas obtained by mixing hydrocarbon and another exhaust gas branched off from the exhaust gas, iii) And iv) mixing the reducing gas and the reformed gas discharged from the melter-gasifier connected to the reducing furnace and supplying the reduced iron to the reduction furnace.

Method for manufacturing molten irons

A method for manufacturing molten irons is provided to enhance reduction efficiency and melting efficiency in a melter-gasfier by forming a briquette in a desired strength. A method for manufacturing molten irons comprises the step of heating and partially deoxidizing fine iron ore in a fluidized reduction reactor(30) using reduction gas generated in a melter-gasifier(10). A mixture is obtained by adding non-bituminous coal to the fine iron ore. The non-bituminous coal has a volatile material content of 1 to 11 weight percent and a pulverization degree of 70 or below. Agglomerate is manufactured by forming the mixture. A pig iron is manufactured by charging the agglomerated into the melter-gasifier.

Procedure for production of pelleted reduced iron and procedure for production of cast iron

FIELD: metallurgy. ^ SUBSTANCE: pellet of powder is reduced in furnace with revolving bed. Powder includes general content of iron 40% or more; molar amount of fixed carbon in units of atomic weight is equal to 0.7-1.5-multiple amount of molar amount of oxygen in units of atomic weight fixed in metal oxide and reduced in atmosphere of monoxide of carbon at temperature 1200C. Also, there is produced reduced metal in atmosphere at maximal temperature from 1200C to 1420C with ratio of carbon monoxide to carbon dioxide from 0.3 to 1.2 in a zone of reduction. Produced material contains reduced iron wherein content of metal iron is 50 wt % or more and content of carbon is 5 wt % or less. Material containing reduced iron is moulded under pressure at temperature from 500C to 800C using a die of a roller type. The invention also refers to production of cast iron in a blast furnace with utilisation of pelleted reduced iron. ^ EFFECT: production of pellets of reduced iron resistant to repeated oxidation, stored during long time and transported to great distance. ^ 12 cl, 3 dwg, 3 tbl РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2 435 868 (13) C1 (51) МПК C21B 13/08 (2006.01) C21B 5/00 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (21)(22) Заявка: 2010107663/02, 02.09.2008 (24) Дата начала отсчета срока действия патента: 02.09.2008 (73) Патентообладатель(и): НИППОН СТИЛ КОРПОРЕЙШН (JP) R U Приоритет(ы): (30) Конвенционный приоритет: 05.09.2007 JP 2007-230193 27.08.2008 JP 2008-218015 (72) Автор(ы): ИБАРАКИ Тецухару (JP) (45) Опубликовано: 10.12.2011 Бюл. № 34 2 4 3 5 8 6 8 2 4 3 5 8 6 8 R U (85) Дата начала рассмотрения заявки PCT на национальной фазе: 02.03.2010 C 1 C 1 (56) Список документов, цитированных в отчете о поиске: JP 2004-218019 А, 05.08.2004. RU 2293121 С2, 10.02.2007. RU 2271396 С2, 10.03.2006. JP 2003-027149 А, 29.01.2003. КУРУНОВ И.Ф. и др. Состояние и перспективы бездоменной металлургии железа. - М.: Черметинформация, ...

Process and plant for producing hot metal

본 발명은 용선의 제조에 관한 것으로, 산화철을 함유한 입상 원료는 적어도 850 ℃ 의 온도로 유동층 반응기에서 탄소질 환원제를 가지고 환원 혼합물로 부분적으로 환원되고, 배출 시스템을 통하여, 가능하다면 고온 자기 분리에 의한 자기 및 비자기 성분의 분리 후, 환원 혼합물은 용련 환원 유닛으로 공급된다. 에너지 소비를 최적화하기 위해서, 용련 유닛으로 공급되기 전 환원 혼합물은 열교환기 장치에서 600 ℃ ~ 800 ℃ 로 냉각되고, 예열 프로세스 가스는 냉각 매체로서 사용된다. The present invention relates to the preparation of molten iron, wherein the iron oxide-containing granular feedstock is partially reduced to a reducing mixture with a carbonaceous reducing agent in a fluidized bed reactor at a temperature of at least 850 DEG C, After separation of the magnetic and nonmagnetic components by the reducing mixture, the reducing mixture is fed to the melt-reduction unit. To optimize energy consumption, the reducing mixture before being fed to the eluting unit is cooled to 600 ° C to 800 ° C in the heat exchanger unit, and the preheating process gas is used as the cooling medium.

Method of accelerating separation of granulated metallic iron and slag

FIELD: separation of granulated metallic iron in form of target product and slag in form of byproduct. SUBSTANCE: proposed method includes reducing smelting of lumpy charge containing material with iron oxide and carbon-containing reducing agent for obtaining the melt which is cooled down in furnace at the first stage of cooling. Thus, mixture containing granules of metal, granules of slag and heterogeneous solid mixture in form of granules of metal stuck with slag is unloaded from furnace. Then, heterogeneous solid mixture obtained at cooling and solidification is subjected to second stage of cooling at higher rate as compared with natural cooling with the use of coolant and to separation into granules of metallic iron and slag, after which natural cooling is carried out and granules of metallic iron are separated from granules of slag. EFFECT: considerable acceleration of process; high quality of metallic iron. 5 cl, 7 dwg, 1 tbl, 1 ex ÐÎÑÑÈÉÑÊÀß ÔÅÄÅÐÀÖÈß (19) RU (11) 2 312 899 (13) C2 (51) ÌÏÊ C21B 13/10 (2006.01) ÔÅÄÅÐÀËÜÍÀß ÑËÓÆÁÀ ÏÎ ÈÍÒÅËËÅÊÒÓÀËÜÍÎÉ ÑÎÁÑÒÂÅÍÍÎÑÒÈ, ÏÀÒÅÍÒÀÌ È ÒÎÂÀÐÍÛÌ ÇÍÀÊÀÌ (12) ÎÏÈÑÀÍÈÅ ÈÇÎÁÐÅÒÅÍÈß Ê ÏÀÒÅÍÒÓ (21), (22) Çà âêà: 2004105153/02, 17.06.2002 (72) Àâòîð(û): ÖÓÃÅ Îñàìó (JP), ¨ÑÈÄÀ Ñîõåè (JP) (24) Äàòà íà÷àëà îòñ÷åòà ñðîêà äåéñòâè ïàòåíòà: 17.06.2002 (73) Ïàòåíòîîáëàäàòåëü(è): ÊÀÁÓÑÈÊÈ ÊÀÉÑß ÊÎÁÅ ÑÅÉÊΠѨ (JP) R U (30) Êîíâåíöèîííûé ïðèîðèòåò: 24.07.2001 JP 2001-223266 (43) Äàòà ïóáëèêàöèè çà âêè: 10.06.2005 (45) Îïóáëèêîâàíî: 20.12.2007 Áþë. ¹ 35 2 3 1 2 8 9 9 (56) Ñïèñîê äîêóìåíòîâ, öèòèðîâàííûõ â îò÷åòå î ïîèñêå: JP 2000-144224 À, 26.05.2000. RU 2027792 C1, 27.01.1995. SU 977506 A1, 30.11.1982. SU 680870 A, 28.08.1979. (85) Äàòà ïåðåâîäà çà âêè PCT íà íàöèîíàëüíóþ ôàçó: 24.02.2004 2 3 1 2 8 9 9 R U (87) Ïóáëèêàöè PCT: WO 03/010342 (06.02.2003) C 2 C 2 (86) Çà âêà PCT: JP 02/05996 (17.06.2002) Àäðåñ äë ïåðåïèñêè: 129010, Ìîñêâà, óë. Á. Ñïàññêà , 25, ñòð.3, ÎÎÎ "Þðèäè÷åñêà ôèðìà Ãîðîäèññêèé è Ïàðòíåðû", ïàò.ïîâ. Þ.Ä.Êóçíåöîâó, ðåã.¹ ...

Powder reduction iron containing iron carbide and manufacturing installation thereof

本发明公开一种含有碳化铁的粉末还原铁及其制造方法。本发明的含有碳化铁的粉末还原铁在还原炉中还原难还原性极细粉矿之后在碳化炉中通过碳化反应在表面上形成碳化铁，由此含有20重量％至30重量％的碳化铁。本发明的含有碳化铁的粉末还原铁的制造装置在碳化炉和还原炉中选择性使用包括在还原气内的硫化气，从而能够有效地还原及碳化粉末铁矿石。适用本发明的含有碳化铁的粉末还原铁能够增加粉末还原铁内的碳含量，从而能够提高熔融性，而且能够降低还原及熔融速度的提高所致的燃料费。

Briquette for smelting pig-iron

manufacturing process for sintered ore

본 발명은, 고결정수, 저맥석으로 미분을 많이 함유하는 열등한 품질을 가진 마라맘바와 같은 철광석을 소결광 원료로 하여 사용하여도, 생산성과 제품회수율을 악화시키는 일이 없는 소결광의 제조방법을 제공한다. The present invention provides a method for producing a sintered ore without deteriorating productivity and product recovery even when using iron ore such as maramamba having an inferior quality containing a lot of fine powder with high crystallized water and low gangue as a raw material. . 결정수를 3.0질량% 이상, SiO 2 를 4.0질량% 이하, 입경 0.25mm 이하의 미분을 20질량% 이상 함유하는 상기 철광석에 비표면적이 3m 2 /g 이상이고, 입경 3mm 이상 5mm 미만의 입자의 비율 A 1 (질량%) 및 입경 5mm 이상 10mm 미만의 입자의 비율 A 2 (질량%)의 관계가 다음 (1)식을 만족하는 광석을 배합하여 배합물로 하고, 이 배합물을 소정의 교반속도 이상에서 혼합조립한 후 소결한다. The iron ore containing 3.0 mass% or more of crystal water, 4.0 mass% or less of SiO 2 , and 20 mass% or more of fine powder having a particle diameter of 0.25 mm or less has a specific surface area of 3 m 2 / g or more, and has a particle diameter of 3 mm or more and less than 5 mm. The relationship between the ratio A 1 (mass%) and the ratio A 2 (mass%) of the particles having a particle diameter of 5 mm or more and less than 10 mm is compounded by mixing ore that satisfies the following formula (1) to make the compound more than a predetermined stirring speed. After assembling, mixing and sintering. 13. 2 - 0.014×A 1 + 0.033×A 2 ＜14.5 … (1) 13. 2-0.014 x A 1 + 0.033 x A 2 <14.5. (One) 또는 상기 철광석에 결정수를 2.0~4.0질량%, SiO 2 를 3.0질량% 이상, 0.25mm 이하의 미분을 20질량% 미만 함유하는 헤마타이트 광석을 첨가하고, SiO 2 가 3.0~5.0질량%, 0.5mm 이하의 미분이 25질량% 이상 30질량% 미만인 배합물로 하며, 여기에 수분을 5~10질량%, 특히 바람직하게는 7.5~9.5질량% 첨가하여 고속교반기를 이용하여 혼합조립한 후 소결한다. To 2.0 or a water of crystallization in the iron 4.0% by weight, it was added to hematite ore containing SiO 2 of 3.0 wt% or more and less than 20% by weight of the fine powder of less than 0.25mm, and, SiO 2 is 3.0 - 5.0 mass%, 0.5 A fine powder of 25 mm or less and less than 30% by mass is used as a blend, and 5 to 10% by mass of water, particularly preferably 7.5 to 9.5% by mass, is mixed and assembled using a high speed ...

Unit for production of molten cast iron by hot molding of ground reduced iron and calcined additives and method of use of this unit

FIELD: production of molten cast iron. SUBSTANCE: reduced materials obtained from hot finely ground reduced iron and calcined additives from fluidized beds are delivered to at least one pair of molding rolls. They are molded for obtaining molded material having projections formed on the molded surfaces, after which they are crushed and crushed molded material is delivered to packed layer of coal where oxygen is fed for forming the molten cast iron. Molded material is molded forming acute and obtuse angles between center line formed along section in longitudinal direction perpendicularly relative to direction of molding rolls and connecting lines which connect adjacent grooves and intersect center line. EFFECT: increased productivity; adaptability of equipment in manufacture of molded material. 30 cl, 9 dwg, 1 tbl, 3 ex

Method For Producing Cementite

본 발명은 제철용 원료 등으로 사용되는 세멘타이트를 제조하는 방법에 관한 것으로써, 석탄가스를 주요 반응가스로 하고 여기에 유황 함유가스를 첨가함으로써 유동층 반응로에서 유리탄소 및 탄화분화의 발생 없이 안정적으로 고순도의 세멘타이트를 얻을 수 있는 방법을 제공하고자 하는데, 그 목적이 있는 것이다. The present invention relates to a method for producing cementite, which is used as a raw material for steelmaking, and is stable without generating carbon and carbonization in a fluidized bed reactor by using coal gas as a main reaction gas and adding sulfur-containing gas thereto. To provide a way to obtain high-purity cementite, the purpose is to. 본 발명은 철광석을 유동층 반응로에 장입하여 세멘타이트를 제조하는 방법에 있어서, The present invention provides a method for preparing cementite by charging iron ore into a fluidized bed reactor, H 2 와 CO의 합이 85%이상이고 H 2 /CO 조성비가 1∼3이고 그리고 황화철(FeS)의 활동도가 0.1 ∼ 0.5가 되도록 황화수소가 첨가된 반응가스를 상기 유동층 반응로에 공급하여 600∼800℃의 반응온도 및 2∼4시간의 반응시간의 조건으로 상기 반응가스와 철광석을 반응시켜 세멘타이트를 제조하는 방법을 그 요지로 한다. Hydrogen sulfide-added reaction gas was supplied to the fluidized bed reactor so that the sum of H 2 and CO was 85% or more, the H 2 / CO composition ratio was 1 to 3, and the activity of iron sulfide (FeS) was 0.1 to 0.5. A method of producing cementite by reacting the reaction gas with iron ore under the conditions of a reaction temperature of ˜800 ° C. and a reaction time of 2 to 4 hours.

Procedure and system for supply of hot iron of direct reduction for numerous consumers

FIELD: metallurgy. SUBSTANCE: pressure is dropped in insulated pipeline through which there passes flow of hot iron of direct reduction. Upon pressure drop the flow of hot iron of direct reduction is divided at least in two flows of hot iron of direct reduction. Also, the first flow of hot iron of direct reduction is continuously directed into installation for hot briquetting under effect of gravity force in the first closed pipeline system. The second flow of hot iron of direct reduction is continuously directed into a neighbour melting furnace according to one of versions: under gravity force in the second closed pipeline system and by means of combined gravity force in the second closed pipeline system and in essence a horizontal loading conveyer. EFFECT: supply of hot iron of direct reduction simultaneously to several consumers at reduced losses of heat and facilitation of iron transfer under continuous and controlled mode. 25 cl, 3 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2 434 948 (13) C2 (51) МПК C21B 13/14 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ, ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (21)(22) Заявка: 2009140297/02, 31.03.2008 (24) Дата начала отсчета срока действия патента: 31.03.2008 (73) Патентообладатель(и): МИДРЕКС ТЕКНОЛОДЖИЗ, ИНК. (US) 2 4 3 4 9 4 8 (43) Дата публикации заявки: 10.05.2011 Бюл. № 13 2 4 3 4 9 4 8 R U (56) Список документов, цитированных в отчете о поиске: US 6214086 B1, 10.04.2001. US 6162050 B1, 19.12.2000. US 5296015 A, 22.03.1994. КУРУНОВ И.Ф. и др. Состояние и перспективы бездоменной металлургии железа. - М.: Черметинформация, 2002, с.4350. C 2 C 2 (45) Опубликовано: 27.11.2011 Бюл. № 33 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 02.11.2009 (86) Заявка PCT: US 2008/004196 (31.03.2008) (87) Публикация заявки РСТ: WO 2008/123962 (16.10.2008) Адрес для переписки: 129090, Москва, ул.Б.Спасская, 25, стр.3, ООО "Юридическая фирма Городисский и Партнеры", пат.пов. А.В.Мицу, ...

Molten iron production apparatus and method for producing molten iron for agglomerating reduced iron powder and calcined auxiliary material at high temperature

Mothod for controlling roll-gap by the compacting machine of hot compacted iron

본 발명은 롤의 토크 다운 발생시 롤갭을 신속하게 보정하여 안정적인 조업을 실시하기 위한 괴성화 환원철 성형 장치의 롤갭 제어 방법에 관한 것으로서, 본 발명의 일실시형태에 따른 괴성화 환원철 성형 장치의 롤갭 제어 방법은 분말 상태의 환원분(Direct Reduction Iron; DRI)을 한 쌍의 롤 사이로 통과시켜 괴성화 환원철(Hot Compacted Iron;HCI)로 성형시키는 괴성화 환원철 성형 장치에서 롤갭을 제어하는 방법으로서, HCI 성형 중에 롤의 회전 토크 값을 실시간으로 피드백 받아 회전 토크 실시간값을 구하는 단계와; 상기 회전 토크 실시간값을 이용하여 토크 다운을 감지하는 단계와; 상기 토크 다운 감지시에 상기 한 쌍의 롤 사이 간격이 좁아지도록 롤갭을 조절하는 단계를 포함한다. The present invention relates to a roll gap control method of a hardened reduced iron forming apparatus for quickly correcting a roll gap when a roll down occurs in a roll to perform stable operation, and a roll gap control method of a hardened reduced iron forming apparatus according to an embodiment of the present invention. A method of controlling roll gap in a compacted reduced iron forming apparatus in which a reduced powder (DRI) in the form of silver is passed between a pair of rolls to be formed into a hot compacted iron (HCI). Obtaining feedback of the rotational torque of the roll in real time to obtain a rotational torque real-time value; Detecting a torque down using the rotational torque real-time value; And adjusting the roll gap such that the gap between the pair of rolls is narrowed upon detecting the torque down.

Apparatus for manufacturing compacted irons of reduced materials comprising fine direct reduced irons and apparatus for manufacturing molten irons provided with the same

분환원철 함유 환원체를 괴성체로 제조하는 괴성체 제조 장치 및 이를 구비한 용철제조장치를 제공한다. 괴성체 제조 장치는 ⅰ) 분환원철 함유 환원체가 장입되는 장입 호퍼 및 ⅱ) 상호 이격되어 갭을 형성하고, 장입 호퍼에서 배출되는 분환원철 함유 환원체를 갭을 통해 압출하여 괴성체를 제조하는 한 쌍의 롤을 포함한다. 전술한 장입 호퍼는 ⅰ) 벽면 및 ⅱ) 벽면과 연결되고 한 쌍의 롤에 대향하는 일체형 하부면을 포함한다. 그리고 장입 호퍼의 하부면에는 분환원철 함유 환원체를 한 쌍의 롤로 배출하는 하나 이상의 배출구가 형성된다. 괴성체 제조 장치, 용철제조장치, 일체형 하부면, 격벽

Process and plant for producing hot metal

본 발명은 용선의 제조에 관한 것으로, 산화철을 함유한 입상 원료는 적어도 850 ℃ 의 온도로 유동층 반응기에서 탄소질 환원제를 가지고 환원 혼합물로 부분적으로 환원되고, 배출 시스템을 통하여, 가능하다면 고온 자기 분리에 의한 자기 및 비자기 성분의 분리 후, 환원 혼합물은 용련 환원 유닛으로 공급된다. 에너지 소비를 최적화하기 위해서, 용련 유닛으로 공급되기 전 환원 혼합물은 열교환기 장치에서 600 ℃ ~ 800 ℃ 로 냉각되고, 예열 프로세스 가스는 냉각 매체로서 사용된다.

Apparatus for manufacturing molten irons

본 발명은 환원로에서 환원된 일반탄 및 분철광석을 괴성화시키는 설비에서 발생되는 분진을 건식으로 포집할 수 있도록 하는 용철 제조장치에 관한 것으로서, 본 발명에 따른 용철 제조장치는 철광석을 환원하는 유동층형 환원로와; 상기 환원로에서 환원된 분광을 공급받아 괴성체를 제조하는 괴성체 제조유닛과; 상기 괴성체 제조유닛에서 발생되는 분진을 건식으로 집진하는 적어도 하나 이상의 싸이클론이 구비되는 집진유닛과; 상기 괴성체가 장입되고, 그 내부에 산소를 취입하여 용철을 제조하는 용융로를 포함한다. The present invention relates to a molten iron manufacturing apparatus for allowing the collection of dust generated in a facility for compacting the reduced coal or iron ore in a reduction furnace dry-type, the molten iron manufacturing apparatus according to the present invention is a fluidized bed type for reducing iron ore A reduction furnace; A compacted material manufacturing unit for receiving compacted spectroscopically reduced in the reduction furnace to produce compacted material; A dust collecting unit having at least one cyclone to dry-collect dust generated in the compacted material manufacturing unit; The compacted material is charged and includes a melting furnace for blowing molten iron into the molten iron. 환원로, 괴성체, 집진, 분진, 싸이클론, 건식 Reduction Furnace, Compacted Material, Dust Collection, Dust, Cyclone, Dry

System of unloading of iron produced by a method of its direct reduction

Изобретение относится к металлургии железа, а именно к способу и устройству для одновременного получения горячего и холодного прямовосстановленного железа (ПВЖ) из непрерывно поступающего под действием гравитации горячего ПВЖ материала из обычной печи для прямого восстановления. Устройство содержит разгрузочную секцию печи для приема и разгрузки горячего ПВЖ, первый разгрузочный трубопровод и второй разгрузочный трубопровод, соединенные с разгрузочной секцией, охладитель гранулированного материала сообщен с первым разгрузочным трубопроводом, емкость для приема горячего гранулированного материала сообщена со вторым разгрузочным трубопроводом. В способе обеспечивают непрерывную подачу горячего ПВЖ, герметично самотеком передают первую часть горячего ПВЖ через первое герметизированное ответвление в емкость для приема горячего ПВЖ, герметично самотеком передают вторую часть ПВЖ в емкость для охлаждения горячего ПВЖ и получения охлажденного ПВЖ продукта, разгружают горячий ПВЖ из емкости для приема горячего ПВЖ для дальнейшей транспортировки, брикетирования или плавления. Изобретение позволяет усовершенствовать способ и устройство для одновременного получения горячего и холодного ПВЖ из постоянно подаваемого самотеком горячего ПВЖ материала, который поступает из промежуточной емкости при температуре 700 o С или выше. 2 с. и 8 з. п. ф-лы, 5 ил. уусбГсс ПЧ сэ РОССИЙСКОЕ АГЕНТСТВО ПО ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (19) ВИ "” 2 219 244. (51) МПК? 13) С2 С 21В 13/02 12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ РОССИЙСКОЙ ФЕДЕРАЦИИ (21), (22) Заявка: 2002107016/02, 08.10.1999 (24) Дата начала действия патента: 08.10.1999 (30) Приоритет: 20.08.1999 Ш$ 60/150.036 (46) Дата публикации: 20.12.2003 (56) Ссылки: ЗИ 621320, 25.08.1978. 4$ 3748120, 24.07.1973. $ 4256290 А, 17.03.1981. ($ 42101739 А, 02.06.1981. (85) Дата перевода заявки РСТ на национальную фазу: 20.03.2002 (86) Заявка РСТ: 1$ 99/23699 (08.10.1999) (87) Публикация РСТ: \М/О 01/14598 (01.03.2001) (98) Адрес для переписки: 129010, ...

METHOD FOR PRODUCING APPLICABLE MATERIAL FOR A DIRECT REDUCTION PROCESS

Apparatus for manufacturing compacted irons and apparatus for manufacturing molten irons

An apparatus for manufacturing compacted irons is provided to reduce damage of the forming rolls by reducing internal stress of forming rolls, and prevent the deterioration of a facility operating proportion due to a replacement operation and reduce the replacement cost of the forming rolls by extending a replacement cycle of the forming rolls. An apparatus for manufacturing compacted irons comprises at least one pair of forming rolls(20a) for compressing iron fines to manufacture compacted irons, wherein the forming rolls include a shaft(24) having a cooling channel(22), and a roll tire(26) coupled to the shaft while surrounding the shaft. The roll tire includes a shoulder(26a) that surrounds the shaft, and a concave part(26b) formed on a partial region of the shoulder above the shoulder, wherein the cooling channel is disposed correspondingly to a region on which the concave part is formed. The roll tire has a thickness(b) of 140 mm to 200 mm. The forming roll including the shaft and the roll tire has an entire diameter(a) of 1200 mm to 1400 mm.

High temperature briquette treatment method of granular sponge

과립형 해면철은 고온 브리켓을 형성하기 위하여 600℃ 내지 850℃의 온도로 롤러 프레스에 공급된다. 서로 일정한 거리로 배치된 고온 브리켓을 갖는 해면철의 스트립 구조가 생성된다. 상기 스트립 구조를 파괴하므로써, 고온 브리켓은 서로 분리되며, 이에 따라 스트립 구조의 파편을 얻을 수 있다. 파편의 적어도 일부와 고온 브리켓은 20℃ 내지 400℃의 온도로 냉각되며, 냉각된 브리켓과 파편은 회전형 드럼을 통과한다. 회전형 드럼에서, 브리켓과 파편의 미립자가 생산된다. 이어서, 이러한 미립자는 자연발화성을 나타내는 브리켓과 파편으로부터 분리된다.

Direct reduced iron hot/cold discharge system

A sytem for discharging cold product or cold and hot products from a continuous supply of hot direct reduced iron ('DRI') comprising a product cooler (12) connected to a shaft furnace (10), with downward movement of the hot DRI and upward concurrent flow of cooling gas through the product cooler (12). The system diverts hot DRI from an upper portion of the cooler (12) to an adjacent storage unit (32) located at a lower elevation than the furnace (10). The product cooler (12) is at a lower height in relation to the furnace (10), for gravity transfer of a continuous supply of hot DRI to the cooler (12). Cooler (12) provides for cooling gas injection into the lower portion of the cooler (12), with gas flow upward and counter-current to the flow of hot DRI. Recovered cooling gas is scrubbed, cooled, and recycled back for injection into the bottom portion of the cooler (12).

Method for direct reduction and upgrading of fine-grained refractory and earthy iron ores and slags

A method of upgrading relatively rich, fine-grained earthy hematite iron ores is provided. The iron ore, after suitable preparation, is reduced using a solid state reduction technique. As a result of the reduction process, the iron grains undergo size enhancement while the nonmetallic oxides are unreduced and remain as refractory oxide gangue. After completion of the reduction process, the enlarged malleable metallic iron grains are crushed in such a way as to cause the iron grains to fuse together, forming large, flat iron flakes. In order to achieve maximum flake size, the crushing system applies a relatively gradual pressing force rather than a rapid, impact type of force. The flakes are generally greater than 0.1 millimeters in size, and typically in the range of 0.3 to 0.5 millimeters. As the large flakes are formed, the iron grains are liberated from the refractory oxide grains resulting in an increase in density from about 4 to 5 grams per cubic centimeter to about 6 to 7 grams per cubic centimeter. The crushing system causes non-iron oxide bonds to be broken, resulting in the formation of residual refractory particles generally with a grain size of less than 0.05 millimeters, and typically less than 0.01 millimeters. The shape, size, density, and ferromagnetic differences between the iron flakes and the nonmetallic oxides are used to separate the iron from the nonmetallics. A variety of different separation techniques may be used, including screens, jigs, spirals, elutriation, cyclones, magnetic, and gravity separation. Although other processes may be used, preferably the final concentration and cleaning is accomplished using a low-intensity magnetic separator. The combination of solid state reduction, mechanical working, and physical/electromagnetic separation enable consistent production of super concentrates of material with metallic iron contents exceeding 92 % with less than 4 % oxide gangue and an iron recovery of greater than 95 %.

Method and apparatus for the production of cast iron, cast iron produced according to said method

A method for the production of cast iron starting from pre-reduced iron ore DRI by means of an electric arc furnace EAF, comprising the following steps: a. preparing a charge of pre-reduced iron ore DRI having a metallization higher than 90% and containing over 2.8% by weight of carbon, wherein at least 80% of said carbon is combined with the iron to form iron carbide Fe 3 C, b. charging the charge of pre-reduced iron ore DRI into the electric arc furnace EAF, c. melting the DRI charge to form liquid cast iron wherein said liquid cast iron has a predetermined actual content of carbon, at least 80% by weight of said actual carbon content of the cast iron deriving from the carbon in the charge of pre-reduced iron ore DRI and wherein step c. is carried out in a reducing atmosphere and in a melting chamber of the electric arc furnace EAF subjected to a positive internal pressure generated by gases produced by reduction reactions that develop in step c.

Advanced process for making iron briquettes

Direct reduction process for iron ore

Device for the controlled cooling of hot-briquetted directly reduced iron sponge

In an arrangement for the controlled cooling of hot-briquetted direct-reduced sponge iron in the form of an apron conveyor consisting of individual plates and located in a tank, the individual plate is designed as a conveyer trough, wherein at least one sliding plate each is located on the two opposed longitudinal outsides and the conveyor troughs are movably supported by means of the sliding plates on slideways and connected by means of at least one chain. The invention allows to separate the drive and the bearing as the conveyor troughs are supported by means of sliding plates and the drive acts directly on the conveyor trough by means of at least one chain. As the translation elements are designed as sliding plates and slideways, the surface pressure is reduced to less than a hundredth compared to wheels running on rails and the wear of the translation elements is thus reduced.

Furnace-shaft for direct reduction of iron ore

Refining process for impure particulate iron

Apparatus and method for manufacturing molten irons

An apparatus and a method for manufacturing molten iron are provided to stably operate a nozzle of a distribution plate and a cyclone in a fluidized bed reduction reactor by using adhesiveness restrainer. An apparatus for manufacturing molten iron comprises at least one fluidized bed reduction reactor(10), an agglomerate forming device(30), a melter-gasifier(40), a supply tube for reduction gas and a particle injection device(70). Particle irons are subject to a reduction and plastic process in the fluidized bed reduction reactor. The powder irons are formed into agglomerate in the agglomerate forming device. The agglomerate is charged into the melter-gasifier to form molten iron. The supply tube for reduction gas provides reduction gas which is discharged from the melter-gasifier to the fluidized bed reduction reactor. The particle injection device injects adhesiveness restrainer to the reduction gas.

Patent FR2173154B1

Manufacturing process of iron and steel from unwashed ores

Process for the treatment of iron powders after reduction

Patent FR1572081A

Aqueous pulp of solid oxidised metalliferous matter, especially of iron ore.

LA PRESENTE INVENTION A POUR OBJET UNE PULPE AQUEUSE DE MATIERES METALLIFERES OXYDEES SOLIDES A L'ETAT DIVISE, COMPRENANT UN AGENT DISPERSANT ET UN AGENT STABILISANT. ELLE SE CARACTERISE EN CE QUE L'AGENT DISPERSANT EST UN POLYCARBOXYLATE DE METAL ALCALIN OU ALCALINO TERREUX ET EN CE QUE L'AGENT STABILISANT EST DE LA BENTONITE. CETTE PULPE TROUVE NOTAMMENT SON APPLICATION DANS LES FOURS DE FUSION REDUCTION DANS LESQUELS ELLE EST INJECTEE AU MOYEN D'INJECTEURS SITUES DE PREFERENCE DANS LA ZONE DE REACTION, AU VOISINAGE DES TUYERES DE SOUFFLAGE DU VENT.

Method and apparatus for the production of cast iron, cast iron produced according to said method

A method for the production of cast iron starting from pre-reduced iron ore DRI by means of an electric arc furnace EAF, comprising the following steps: a. preparing a charge of pre-reduced iron ore DRI having a metallization higher than 90% and containing over 2.8% by weight of carbon, wherein at least 80% of said carbon is combined with the iron to form iron carbide Fe3C, b. charging the charge of pre-reduced iron ore DRI into the electric arc furnace EAF, c. melting the DRI charge to form liquid cast iron wherein said liquid cast iron has a predetermined actual content of carbon, at least 80% by weight of said actual carbon content of the cast iron deriving from the carbon in the charge of pre-reduced iron ore DRI and wherein step c. is carried out in a reducing atmosphere and in a melting chamber of the electric arc furnace EAF subjected to a positive internal pressure generated by gases produced by reduction reactions that develop in step c.

Method and apparatus for reducing iron ore

Direct process for manufacturing iron and steel

Iron powder and method of producing such

A method of producing iron powder comprises the step of providing a supply of iron oxide powder of a size less than 1000 microns which is then heated in a reducing agent atmosphere to a temperature between 1000° F. and 2100° F., thus resulting in the ironoxide powder being reduced to iron powder, cooling the iron powder in an inert gas atmosphere to a temperature below 150° F. and milling to a median particle size diameter of less than or equal to 20 microns.

Method and apparatus for the production of cast iron, cast iron produced according to said method

A method for the production of cast iron starting from pre-reduced iron ore DRI by means of an electric arc furnace EAF, comprising the following steps: a. preparing a charge of pre-reduced iron ore DRI having a metallization higher than 90% and containing over 2.8% by weight of carbon, wherein at least 80% of said carbon is combined with the iron to form iron carbide Fe3C, b. charging the charge of pre-reduced iron ore DRI into the electric arc furnace EAF, c. melting the DRI charge to form liquid cast iron wherein said liquid cast iron has a predetermined actual content of carbon, at least 80% by weight of said actual carbon content of the cast iron deriving from the carbon in the charge of pre-reduced iron ore DRI and wherein step c. is carried out in a reducing atmosphere and in a melting chamber of the electric arc furnace EAF subjected to a positive internal pressure generated by gases produced by reduction reactions that develop in step c.

Apparatus for storing iron ores and apparatus for manufacturing compacted irons

저장 장치의 내벽에 철광석이 부착되는 현상을 방지할 수 있는 철광석 저장 장치를 제공한다. 본 발명의 일 실시예에 따른 철광석 저장 장치는 용철 제조에 사용한다. 철광석 저장 장치는, 철광석을 저장하는 저장 유닛, 및 상기 저장 유닛의 외측에 설치된 자기장 생성 유닛을 포함한다. 자기장 생성 유닛은 저장 유닛에 자기장을 인가하여 저장 유닛 내의 철광석을 유동시키도록 적용된다. Provided is an iron ore storage device capable of preventing the phenomenon of iron ore adhering to the inner wall of the storage device. Iron ore storage device according to an embodiment of the present invention is used to manufacture molten iron. The iron ore storage device includes a storage unit for storing iron ore, and a magnetic field generating unit provided outside the storage unit. The magnetic field generating unit is adapted to apply a magnetic field to the storage unit to flow iron ore in the storage unit. 철광석 저장 장치, 자기장, 3상 교류 전류, 경사면 Iron ore storage device, magnetic field, three-phase alternating current, slope

Method and apparatus for manufacturing partially-carbonized coal briquettes, and apparatus for manufacturing molten irons

용철제조장치 및 용철제조방법이 개시된다. 본 발명에 의한 용철제조장치는 분철광석을 환원하여 분환원철로 전환시키기 위한 다단의 유동 로, 상기 분환원철을 압착하여 고온 괴성체를 제조하기 위한 적어도 하나의 고온 괴성화 장치, 상기 고온 괴성체를 일정한 입도로 파쇄하기 위한 적어도 하나의 파쇄장치, 상기 파쇄된 고온 괴성체를 이송하기 위한 제1 이송장치, 및 상기 이송된 고온 괴성체를 분상 또는 괴상의 일반탄을 연소시켜 용융하며 로내에서 발생하는 환원가스를 상기 유동 환원로에 공급하는 용융로를 포함한다. 또한, 상기 파쇄된 고온 괴성체의 일부를 저장하기 위한 적어도 하나의 괴성체 저장조를 더 포함한다. 본 발명을 적용함으로써, 안정적 및 효율적으로 용철을 제조할 수 있다. A molten iron manufacturing apparatus and a molten iron manufacturing method are disclosed. The apparatus for manufacturing molten iron according to the present invention comprises a multi-stage flow furnace for converting iron ores into powder-reduced iron, at least one high-temperature compacting device for producing a high-temperature compacted compact by squeezing the reduced iron, A first conveying device for conveying the crushed high-temperature compacted material, and a second conveying device for conveying the conveyed high-temperature compacted material by melting and burning a powdered or bulk general-purpose coal, And a furnace for supplying a reducing gas to the fluidized-bed reactors. The apparatus also includes at least one compacted stock tank for storing a portion of the crushed hot compacted material. By applying the present invention, molten iron can be produced stably and efficiently.