公开(公告)号：EP0787213B1

公开(公告)日：2004-04-14

申请号：EP96922678.6

申请日：1996-07-18

申请人： VOEST-ALPINE INDUSTRIEANLAGENBAU GMBH ,  POHANG IRON & STEEL CO., LTD. ,  RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY, INCORPORATED FOUNDATION

发明人： KEPPLINGER, Werner, Leopold ,  WALLNER, Felix ,  SCHENK, Johannes

IPC分类号： C21B13/00

CPC分类号： C21B13/002 ,  C21B2100/44 ,  Y02P10/136

摘要： In a process for producing liquid raw iron (23) or semi-finished steel products from finely divided iron-containing material (15) in a melt gasification region of a melt gasifier (1), the iron-containing material (15) is melted on passing through the bed (26) with the simultaneous formation of a reducing gas in a bed (26) consisting of solid carbon carriers. In order to be able to operate the process with an addition consisting of up to 100 % fine ore, while reliably preventing the separation of the fine ore added, a high temperature burning and/or gasification region (27) is formed in a deoxidising region (III) above the bed (26) by the burning and/or gasification of carbon-containing material (16', 16'') with the direct supply of oxygen, into which the finely divided iron-containing material (15) is fed directly, whereby at least a surface melting of the iron-containing material (15) and its agglomeration are effected by means of the heat released on the reaction of the carbon-containing material (16', 16'').

公开(公告)号：EP0914475B1

公开(公告)日：2001-06-06

申请号：EP97928042.7

申请日：1997-06-26

申请人： VOEST-ALPINE INDUSTRIEANLAGENBAU GMBH ,  POHANG IRON & STEEL CO., LTD. ,  RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY, INCORPORATED FOUNDATION

发明人： KEPPLINGER, Leopold, Werner ,  WALLNER, Felix ,  SCHENK, Johannes ,  LEE, Il-Ock ,  KIM, Yong-Ha ,  PARK, Moon, Duk

IPC分类号： C21B13/14

CPC分类号： C21B13/14 ,  Y02P10/136

摘要： In a method of producing liquid pig iron (43) or liquid steel precursors from charges consisting of iron ore (5) and fluxes, having at least in part a proportion of fines, the iron ore is reduced directly to sponge iron in two or more reduction stages (1, 2) by the fluidized-bed method. The sponge iron is then melted in a smelting-gasification zone (39), with carbonaceous materials and oxygenous gas added; a reducing gas containing CO and H2 is generated, which is introduced into the reducing zones of the reduction stages (1, 2), reacts there, is drawn off as top gas, and supplied to a consumer, where appropriate. In order to achieve uniform reduction of the iron ore with optimum utilization of the reducing gas, in a first reduction stage (1), the iron ore (5) is fractionated into two or more fractions of different grain-size distributions, with the help of the reducing gas; each fraction is reduced with the reducing gas in its own fluidized bed (6, 15); the reducing gas sustaining a first fluidized bed (6), containing the coarse-grain fraction, and separating the fine-grain fraction from it, and additional reducing gas being introduced directly into the other fluidized bed (15); reduced iron ore (5) is withdrawn from both the first and the additional fluidized beds (6, 15), and the fine-grain and coarse-grain fractions reduced in the first reduction stage (1) are reduced further in one or more additional reduction stages (2), that operate in the same way as the first reduction stage (1); from the last reduction stage (2), the fine-grain fraction is fed into the smelting-gasification zone (39) under agglomeration by addition of oxygen, and the coarse-grain fraction is gravity-fed directly into the smelting-gasification zone (39).

公开(公告)号：EP0787213A1

公开(公告)日：1997-08-06

申请号：EP96922678.0

申请日：1996-07-18

申请人： VOEST-ALPINE INDUSTRIEANLAGENBAU GMBH ,  POHANG IRON & STEEL CO., LTD. ,  RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY, INCORPORATED FOUNDATION

发明人： KEPPLINGER, Werner, Leopold ,  WALLNER, Felix ,  SCHENK, Johannes

IPC分类号： C21B11 ,  C21B13

CPC分类号： C21B13/002 ,  C21B2100/44 ,  Y02P10/136

摘要： In a process for producing liquid raw iron (23) or semi-finished steel products from finely divided iron-containing material (15) in a melt gasification region of a melt gasifier (1), the iron-containing material (15) is melted on passing through the bed (26) with the simultaneous formation of a reducing gas in a bed (26) consisting of solid carbon carriers. In order to be able to operate the process with an addition consisting of up to 100 % fine ore, while reliably preventing the separation of the fine ore added, a high temperature burning and/or gasification region (27) is formed in a deoxidising region (III) above the bed (26) by the burning and/or gasification of carbon-containing material (16', 16'') with the direct supply of oxygen, into which the finely divided iron-containing material (15) is fed directly, whereby at least a surface melting of the iron-containing material (15) and its agglomeration are effected by means of the heat released on the reaction of the carbon-containing material (16', 16'').

公开(公告)号：EP0958386B1

公开(公告)日：2003-08-13

申请号：EP97921514.2

申请日：1997-05-15

申请人： VOEST-ALPINE INDUSTRIEANLAGENBAU GMBH ,  POHANG IRON & STEEL CO., LTD. ,  RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY, INCORPORATED FOUNDATION

发明人： KEPPLINGER, Leopold, Werner ,  WALLNER, Felix ,  SCHENK, Johannes-Leopold ,  HAUZENBERGER, Franz ,  LEE, Il-Ock

IPC分类号： C21B13/00 ,  C21B13/14 ,  C22B5/14

CPC分类号： C21B13/002 ,  C21B13/0033 ,  C21B13/14 ,  C21B2100/44 ,  C21B2100/66 ,  C22B5/14 ,  F27B15/00 ,  Y02P10/136

公开(公告)号：EP0815265B1

公开(公告)日：2000-12-06

申请号：EP96903829.8

申请日：1996-03-11

申请人： VOEST-ALPINE INDUSTRIEANLAGENBAU GMBH ,  POHANG IRON & STEEL CO., LTD. ,  RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY, INCORPORATED FOUNDATION

发明人： KEPPLINGER, Leopold, Werner ,  WALLNER, Felix ,  SCHENK, Johannes-Leopold ,  GENNARI, Udo ,  LEE, Il-Ock ,  KIM, Yong-Ha ,  PARK, Dae-Gyu

IPC分类号： C21B13/00

CPC分类号： C21B13/0033 ,  Y02P10/136

摘要： The invention concerns a process for reducing ore fines by means of reducing gas in a fluidized bed process. In order to obtain a homogeneous degree of metallization whilst making optimum use of the reducing gas and minimizing the amount thereof, the following combination of steps is applied: the ore fines (2) are fractionated by means of the reducing gas into at least two fractions each having different grain size distributions; each fraction is reduced in its own fluidized bed (3, 12) with the reducing gas; the reducing gas maintains a first fluidized bed (3) containing the coarse grain fraction and separates therefrom the fine grain fraction, it is then accelerated together with the fine grain fraction and subsequently, as it expands, forms a further fluidized bed (12), the gas being continuously fed from below into the further fluidized bed (12) in a radial symmetrical manner; a secondary reducing gas is introduced directly in a radial symmetrical manner into the further fluidized bed (12); and reduced ore is discharged both from the first and the further fluidized bed (3, 12).

公开(公告)号：EP0796350B1

公开(公告)日：2000-05-24

申请号：EP96933255.0

申请日：1996-10-08

申请人： VOEST-ALPINE INDUSTRIEANLAGENBAU GMBH ,  POHANG IRON & STEEL CO., LTD. ,  RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY, INCORPORATED FOUNDATION

发明人： KEPPLINGER, Leopold Werner ,  WALLNER, Felix ,  SCHENK, Johannes-Leopold

IPC分类号： C21B13/14 ,  C21B13/00

CPC分类号： C21B13/14 ,  C21B13/002 ,  C21B2100/282 ,  C21B2100/44 ,  Y02P10/122 ,  Y02P10/126 ,  Y02P10/128 ,  Y02P10/136

摘要： Described is a method of producing molten crude iron or molten crude steel from particulate material containing iron oxide using a fluidized bed, the iron oxide-containing material being first reduced in at least one preliminary-reduction stage (7) by a reducing gas and subsequently reduced to iron sponge in a final-reduction stage (8). The iron sponge is melted in a smelting gasification zone (11) into which carbon carriers and oxygen-containing gas is fed and a reducing gas containing CO and H2 is produced which is used in the final-reduction stage (8) where it reacts, is drawn off, and is subsequently used in the preliminary-reduction stage (7) where it reacts, is drawn off, is scrubbed and is finally discharged as export gas, at least part of the reacted reducing gas being freed of CO2, heated and used as recycled reducing gas for the reduction of the iron oxide-containing material. In order to ensure that the reduction proceeds without the fluidized bed "sticking", by minimizing the amounts of hydrocarbon carriers used, part of the reducing gas flowing from the final reduction (8) to the preliminary reduction (7) is split off, scrubbed, the CO2 removed and the gas heated and subsequently used again in the final-reduction stage (8).

公开(公告)号：EP0946757A1

公开(公告)日：1999-10-06

申请号：EP97911178.0

申请日：1997-10-06

申请人： VOEST-ALPINE INDUSTRIEANLAGENBAU GMBH ,  POHANG IRON & STEEL CO., LTD. ,  RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY, INCORPORATED FOUNDATION

发明人： KEPPLINGER, Leopold, Werner ,  NAGL, Michael ,  HAUZENBERGER, Franz ,  WALLNER, Felix ,  BRANDL, Peter ,  GENNARI, Udo ,  SCHENK, Johannes

IPC分类号： C22B5 ,  C21B13

CPC分类号： C21B13/0026 ,  C21B2100/44 ,  Y02P10/136

摘要： A method for blowing fine particles containing metal oxide into a reducing gas. In order to achieve maximum contact of fine particles with reducing gas, a central material jet formed from fine particles and carrier gas is introduced into the reducing gas and at least one gas jet formed from a secondary gas is directed against the material jet. The gas jet atomizes the material jet, and fine particles are uniformly distributed in reducing gas.

公开(公告)号：EP0871783B1

公开(公告)日：2001-02-21

申请号：EP97910151.6

申请日：1997-11-05

申请人： VOEST-ALPINE INDUSTRIEANLAGENBAU GMBH ,  POHANG IRON & STEEL CO., LTD. ,  RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY, INCORPORATED FOUNDATION

发明人： KEPPLINGER, Leopold, Werner ,  WALLNER, Felix ,  GENNARI, Udo

IPC分类号： C21B13/14

CPC分类号： C21B13/002 ,  C21B13/14 ,  C21B2100/44 ,  Y02P10/136

摘要： A process is disclosed for producing sponge iron by direct reduction of particulate, iron oxide-containing materials. A reduction gas formed in a melting-gasification zone from carbon-yielding materials and oxygen-containing gas is introduced into a reduction zone in which the iron oxide-containing materials are located. The process has the following characteristics: a reduction gas which contains from 20 to 100 g dust per Nm with a carbon content from 30 to 70 % by mass is introduced into the reduction zone; and the iron oxide-containing materials are exposed to the reduction gas for a period of time longer than that required to finish reduction. This process is suitable for producing sponge iron with an increased carbon content.

公开(公告)号：EP0931167B1

公开(公告)日：2000-05-03

申请号：EP97912116.7

申请日：1997-10-06

申请人： VOEST-ALPINE INDUSTRIEANLAGENBAU GMBH ,  POHANG IRON & STEEL CO., LTD. ,  RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY

发明人： GENNARI, Udo ,  KEPPLINGER, Leopold, Werner ,  WALLNER, Felix

IPC分类号： C21B13/14 ,  C21B13/00

CPC分类号： C21B13/0006 ,  C21B13/14 ,  C21B2100/64 ,  Y02P10/136

摘要： A device (29) for dosed introduction of a fine particle material into a reactor vessel (10) comprising a fluidized bed transfer canal (31) into which a material feeding device (9) opens from the top and into which a gas supply device (33) opens in its lower area, introducing a fluidization gas and presenting an overflow tube (34) to forward the fine particle material. In order to obtain dosed introduction of fine particle material into reactor vessel (10) a plurality of fluidized bed transfer canals (35) are located outside the reactor vessel (10) with overflow tubes (37) protruding inside the reactor vessel (10).

公开(公告)号：EP0958386A1

公开(公告)日：1999-11-24

申请号：EP97921514.0

申请日：1997-05-15

申请人： VOEST-ALPINE INDUSTRIEANLAGENBAU GMBH ,  POHANG IRON & STEEL CO., LTD. ,  RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY, INCORPORATED FOUNDATION

发明人： KEPPLINGER, Leopold, Werner ,  WALLNER, Felix ,  SCHENK, Johannes-Leopold ,  HAUZENBERGER, Franz ,  LEE, Il-Ock

IPC分类号： C21B13 ,  C22B5 ,  C22B15 ,  F27B15

CPC分类号： C21B13/002 ,  C21B13/0033 ,  C21B13/14 ,  C21B2100/44 ,  C21B2100/66 ,  C22B5/14 ,  F27B15/00 ,  Y02P10/136

摘要： In a process for the treatment of particulate matter by fluidisation the particulate matter is held and treated in a fluidised bed reactor (1,1', 1'') with the treatment gas flowing from the bottom to the top. To minimise consumption of the treatment gas, and to reduce the entrainement of fines by the treatment gas, particulate matter with a wide ranging grain size distribution and a relative large content of fines is used and the empty pipe flow rate of the treatment gas in the fluidised bed (2) is kept smaller than the flow rate required for the fluidising of the larger particles of the particulate matter. The reduced material is taken via a transport pipe (6) to a melting gasifier (25) where in a melting gasifying zone (26) a reduction gas with CO and H2 content is produced from carbon and oxygen-containing gas which is introduced into the fluidised bed reactor (1'') via a feed pipe (27).