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RU98114972A - METHOD FOR PRODUCING A SPONGE IRON - Google Patents

METHOD FOR PRODUCING A SPONGE IRON

Info

Publication number
RU98114972A
RU98114972A RU98114972/02A RU98114972A RU98114972A RU 98114972 A RU98114972 A RU 98114972A RU 98114972/02 A RU98114972/02 A RU 98114972/02A RU 98114972 A RU98114972 A RU 98114972A RU 98114972 A RU98114972 A RU 98114972A
Authority
RU
Russia
Prior art keywords
reducing gas
iron oxide
material containing
containing iron
recovery
Prior art date
Application number
RU98114972/02A
Other languages
Russian (ru)
Other versions
RU2176672C2 (en
Inventor
Леопольд Вернер КЕППЛИНГЕР
Феликс Валлнер
Удо Геннари
Original Assignee
Фоест-Альпине Индустрианлагенбау ГмбХ
Поханг Айрон энд Стил Ко., Лтд.
Ресеч Инститьют оф Индустриал Саенс энд Технолоджи, Инкорпорейтед Фаундэйшен
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from AT0193296A external-priority patent/AT404256B/en
Application filed by Фоест-Альпине Индустрианлагенбау ГмбХ, Поханг Айрон энд Стил Ко., Лтд., Ресеч Инститьют оф Индустриал Саенс энд Технолоджи, Инкорпорейтед Фаундэйшен filed Critical Фоест-Альпине Индустрианлагенбау ГмбХ
Publication of RU98114972A publication Critical patent/RU98114972A/en
Application granted granted Critical
Publication of RU2176672C2 publication Critical patent/RU2176672C2/en

Links

Claims (6)

1. Способ получения губчатого железа путем прямого восстановления измельченного материала, содержащего оксид железа, согласно которому восстановительный газ, образующийся в плавильно-газификационной зоне из носителей углерода и кислородсодержащего газа, вводят в зону восстановления, которая содержит материал, содержащий оксид железа, отличающийся тем, что в зону восстановления подают восстановительный газ, который включает от 20 - 100 г/Нм3 пыли с содержанием углерода 30 - 70 мас.%, и материал, содержащий оксид углерода, подвергают воздействию восстановительного газа в течение периода времени, который превышает период, требуемый для полного восстановления.1. A method of producing spongy iron by direct reduction of a crushed material containing iron oxide, according to which a reducing gas generated in the melting gasification zone from carbon carriers and an oxygen-containing gas is introduced into the reduction zone, which contains a material containing iron oxide, characterized in that reducing gas is supplied to the reduction zone, which comprises from 20 to 100 g / Nm 3 dust with a carbon content of 30 to 70 wt.%, and the material containing carbon monoxide is exposed s of reducing gas for a period of time that exceeds the period required for full recovery. 2. Способ по п. 1, отличающийся тем, что восстановительный газ, подаваемый в зону восстановления, содержит 40 - 90 г пыли на Нм3.2. The method according to p. 1, characterized in that the reducing gas supplied to the recovery zone contains 40 to 90 g of dust per Nm 3 . 3. Способ по п. 1 или 2, отличающийся тем, что пыль, содержащаяся в восстановительном газе, имеет содержание углерода 45 - 55 мас.%. 3. The method according to p. 1 or 2, characterized in that the dust contained in the reducing gas has a carbon content of 45 to 55 wt.%. 4. Способ по одному или нескольким пп. 1-3, отличающийся тем, что прямое восстановление осуществляют в двух или нескольких последовательно расположенных реакторах с псевдоожиженным слоем, а восстановительный газ подают в реактор с псевдоожиженным слоем, расположенный последним в направлении течения материала, содержащего оксид железа, и затем противотоком относительно течения материала, содержащего оксид железа, проходит через этот реактор и через остальные реакторы с псевдоожиженным слоем. 4. The method according to one or more paragraphs. 1-3, characterized in that the direct recovery is carried out in two or more successively arranged fluidized bed reactors, and the reducing gas is fed into the fluidized bed reactor, which is located last in the direction of flow of the material containing iron oxide, and then countercurrent with respect to the flow of material, containing iron oxide passes through this reactor and through the remaining fluidized bed reactors. 5. Способ по одному или нескольким пп. 1-4, отличающийся тем, что при прямом восстановлении время пребывания увеличено по сравнению с минимальным временем пребывания, требуемым для полного восстановления материала, содержащего оксид железа. 5. The method according to one or more paragraphs. 1-4, characterized in that with direct reduction, the residence time is increased compared to the minimum residence time required for the complete reduction of the material containing iron oxide. 6. Способ по одному или нескольким пп. 1-5, отличающийся тем, что восстановление осуществляют при повышенном удельном количестве восстановительного газа по сравнению с минимальным удельным количеством газа, требуемым для полного восстановления материала, содержащего оксид железа. 6. The method according to one or more paragraphs. 1-5, characterized in that the recovery is carried out at an increased specific amount of reducing gas compared with the minimum specific amount of gas required for complete recovery of the material containing iron oxide.
RU98114972/02A 1996-11-06 1997-11-05 Method of manufacturing sponge iron RU2176672C2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0193296A AT404256B (en) 1996-11-06 1996-11-06 METHOD FOR PRODUCING IRON SPONGE
ATA1932/96 1996-11-06

Publications (2)

Publication Number Publication Date
RU98114972A true RU98114972A (en) 2000-05-10
RU2176672C2 RU2176672C2 (en) 2001-12-10

Family

ID=3524141

Family Applications (1)

Application Number Title Priority Date Filing Date
RU98114972/02A RU2176672C2 (en) 1996-11-06 1997-11-05 Method of manufacturing sponge iron

Country Status (17)

Country Link
US (1) US6149708A (en)
EP (1) EP0871783B1 (en)
JP (1) JP2000503350A (en)
KR (1) KR100466630B1 (en)
CN (1) CN1053014C (en)
AT (1) AT404256B (en)
AU (1) AU733442B2 (en)
BR (1) BR9707112A (en)
CA (1) CA2242249A1 (en)
CZ (1) CZ293263B6 (en)
DE (1) DE59703015D1 (en)
RU (1) RU2176672C2 (en)
SK (1) SK283074B6 (en)
TW (1) TW356479B (en)
UA (1) UA43436C2 (en)
WO (1) WO1998020172A1 (en)
ZA (1) ZA979930B (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100398669C (en) * 2005-05-10 2008-07-02 太原理工大学 Method for preparing low-carbon sponge iron with microwave shaft furnace
AT503593B1 (en) * 2006-04-28 2008-03-15 Siemens Vai Metals Tech Gmbh METHOD FOR THE PRODUCTION OF LIQUID RAW STEEL OR LIQUID STEEL PREPARED PRODUCTS MADE OF FINE-PARTICULAR OXYGEN-CONTAINING MATERIAL
US8486541B2 (en) * 2006-06-20 2013-07-16 Aerojet-General Corporation Co-sintered multi-system tungsten alloy composite
CN100500888C (en) * 2007-01-30 2009-06-17 武汉工程大学 Method for producing iron concentrate by reducing weakly magnetic iron minerals with microwave
AT506837B1 (en) 2008-06-06 2010-03-15 Siemens Vai Metals Tech Gmbh METHOD AND DEVICE FOR PRODUCING RAW STEEL OR LIQUID STEEL PREPARATIONS
KR20150063075A (en) * 2012-09-14 2015-06-08 뵈스트알파인 스탈 게엠베하 Method for Producing Steel
EP3581663A1 (en) 2018-06-12 2019-12-18 Primetals Technologies Austria GmbH Preparation of carburised sponge iron by hydrogen-based direct reduction

Family Cites Families (18)

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Publication number Priority date Publication date Assignee Title
US32247A (en) * 1861-05-07 Vegetable-cutter
US4053301A (en) 1975-10-14 1977-10-11 Hazen Research, Inc. Process for the direct production of steel
US4111687A (en) * 1976-11-01 1978-09-05 Consolidated Natural Gas Service Company, Inc. Process for the production of intermediate hot metal
NL8201945A (en) * 1982-05-12 1983-12-01 Hoogovens Groep Bv METHOD AND APPARATUS FOR MANUFACTURING LIQUID IRON FROM OXYDIC IRON ORE.
US4578110A (en) * 1984-05-07 1986-03-25 Hylsa, S.A. Method of reducing iron oxides
DE3437913C2 (en) * 1984-10-12 1987-05-07 Korf Engineering GmbH, 4000 Düsseldorf Process and apparatus for producing sponge iron and/or liquid pig iron
DE3535572A1 (en) * 1985-10-03 1987-04-16 Korf Engineering Gmbh METHOD FOR PRODUCING HARD IRON FROM FINE ORE
US4702766A (en) * 1986-03-21 1987-10-27 Midrex International, B.V. Rotterdam, Zurich Branch Method of increasing carbon content of direct reduced iron and apparatus
SU1424344A1 (en) * 1986-12-02 1996-07-10 Центральный научно-исследовательский институт черной металлургии им.И.П.Бардина Method of sponge iron production in shaft furnace
US5082251A (en) * 1990-03-30 1992-01-21 Fior De Venezuela Plant and process for fluidized bed reduction of ore
US5137566A (en) * 1990-08-01 1992-08-11 Iron Carbide Holdings, Limited Process for preheating iron-containing reactor feed prior to being treated in a fluidized bed reactor
AU1267192A (en) * 1992-01-17 1993-08-03 Roy H. Whipp Improved plant and process for fluidized bed reduction of ore
US5338336A (en) * 1993-06-30 1994-08-16 Bechtel Group, Inc. Method of processing electric arc furnace dust and providing fuel for an iron making process
AT404735B (en) * 1992-10-22 1999-02-25 Voest Alpine Ind Anlagen METHOD AND INSTALLATION FOR THE PRODUCTION OF LIQUID PIPE IRON OR LIQUID STEEL PRE-PRODUCTS
US5413622A (en) * 1993-12-16 1995-05-09 Bechtel Group, Inc. Method of making hot metals with totally recycled gas
US5869018A (en) * 1994-01-14 1999-02-09 Iron Carbide Holdings, Ltd. Two step process for the production of iron carbide from iron oxide
AT400725B (en) * 1994-04-11 1996-03-25 Voest Alpine Ind Anlagen METHOD FOR PRODUCING A MELTING IRON
KR970003636B1 (en) * 1994-12-31 1997-03-20 포항종합제철 주식회사 A furnace for reduction fine coal in the manufacture of iron melts

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