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公开(公告)号：JPH10506679A
公开(公告)日：1998-06-30
申请号：JP51278296
申请日：1995-10-12
Applicant: VOEST ALPINE IND ANLAGEN
Inventor： KEPPLINGER LEOPOLD WERNER DIPL , MILIONIS KONSTANTIN DIPL ING , SIUKA DIETER DIPL ING , WIESINGER HORST DIPL ING
Abstract: Liq. pig iron or steel is produced by adding iron ore in pieces or pellets together with additive into a redn. zone (12) where sponge iron is produced which is then fed into melting zone (8) with carbon and O2-contg. gas. A CO-contg. and H2-contg. redn. gas is produced and passed back to the redn. zone (12) where it is converted to an export gas which is drawn off and subjected to a CO2 eliminating process before being passed to a further redn. zone (21) for direct redn. of more iron ore. A part of the redn. gas produced in the zone (8) is drawn off and fed directly to the zone (21), by-passing the CO2 elimination stage. The plant for carrying out this process is also claimed.
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公开(公告)号：JPH0672248B2
公开(公告)日：1994-09-14
申请号：JP13899692
申请日：1992-05-29
Applicant: VOEST ALPINE IND ANLAGEN
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公开(公告)号：JPH05148522A
公开(公告)日：1993-06-15
申请号：JP13899692
申请日：1992-05-29
Applicant: VOEST ALPINE IND ANLAGEN
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公开(公告)号：JPH10506678A
公开(公告)日：1998-06-30
申请号：JP51278196
申请日：1995-10-12
Applicant: VOEST ALPINE IND ANLAGEN
Inventor： KEPPLINGER LEOPOLD WERNER DIPL , MILIONIS KONSTANTIN DIPL ING , SIUKA DIETER DIPL ING , WIESINGER HORST DIPL ING
Abstract: PCT No. PCT/AT95/00198 Sec. 371 Date Jul. 22, 1997 Sec. 102(e) Date Jul. 22, 1997 PCT Filed Oct. 12, 1995 PCT Pub. No. WO96/12044 PCT Pub. Date Apr. 25, 1996In a process for the production of molten pig iron or molten steel pre-products and sponge iron from charging materials consisting of iron ore and, if desired, fluxes, direct reduction of the charging materials to sponge iron is carried out in a fixed-bed reduction zone, the sponge iron is melted in a meltdown gasifying zone under supply of carbon carriers as well as an oxygen-containing gas and a CO- and H2-containing reducing gas is produced which is fed to the reduction zone, is reacted there and is drawn off as an export gas, and the drawn-off export gas is subjected to CO2 elimination and for the production of sponge iron is along with part of the reducing gas formed in the meltdown gasifying zone as an at least largely CO2 free reducing gas conveyed to a further reduction zone for the direct reduction of iron ore. In order to save investment costs incurred for the plant and to increase productivity, part of the reducing gas produced in the meltdown gasifying zone is branched off and fed to the further reduction zone while avoiding CO2 elimination.
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公开(公告)号：JPH0840756A
公开(公告)日：1996-02-13
申请号：JP8060995
申请日：1995-04-05
Applicant: VOEST ALPINE IND ANLAGEN
Inventor： GRUENBACHER HERBERT , KEPPLINGER LEOPOLD WERNER DIPL , REUFER FRANZ DR ING , SCHREY GUENTER DIPL ING DR
Abstract: In smelting iron ore, the washed sludge has the water extracted to a residual moisture level before further processing. Coal dust is added to the sludge, together with quicklime (30) as a bonding agent. The sludge is granulated to be returned to the smelting gassing zone (15) to increase the base level of the slag (17) to a max. 1.25 and pref. max. 1.20. Before further processing, the sludge water content is reduced to 25-50% and pref. 35-40%. After water extraction, coal dust is added at a rate of up to 30%, and pref. up to 25%. Before the granules are fed to the smelting gassing zone (15), they are given a carbonate coating through an exhaust gas with a CO2 content. The carbonate granule coating is applied in a coal drying assembly (32).
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Patent Agency Ranking
公开(公告)号：JP2000026911A
公开(公告)日：2000-01-25
申请号：JP35679098
申请日：1998-12-15
Applicant: VOEST ALPINE IND ANLAGEN
Inventor： KEPPLINGER LEOPOLD WERNER DIPL , MILIONIS KONSTANTIN DIPL ING , SIUKA DIETER DIPL ING , WIESINGER HORST DIPL ING
Abstract: PROBLEM TO BE SOLVED: To provide a plant improved so as to obtain a high quality pig iron and/or sponge iron good specially in the metallized degree and purity with the min. energy. SOLUTION: In the producing plant of the pig iron and/or the sponge iron, in which fluidized bed reactors 1 and 2 for receiving fine ores, a reducing gas supplying duct 7 introducing to the fluidized bed reactors 1 and 2, an off-gas exhaust duct 8 extended from the fluidized bed reactor, an exhaust means 17 of reduced product produced in the fluidized bed reactor, and a briquetting means 6 of reduced product produced in the fluidized bed reactor, are provided and the off-gas exhaust duct is communicated with a purificating means 9 of a scrubber, etc., successively, two-stage heating means 12 and 13 and further, the reducing gas supplying duct. The two-stage heating means is provided with a heat exchanger 12 and a partial combustion means 13 providing an oxygen supplying means and continuously connected with the heat exchanger.
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公开(公告)号：JP2863458B2
公开(公告)日：1999-03-03
申请号：JP8060995
申请日：1995-04-05
Applicant: VOEST ALPINE IND ANLAGEN
Inventor： GRUENBACHER HERBERT , KEPPLINGER LEOPOLD WERNER DIPL , REUFER FRANZ DR ING , SCHREY GUENTER DIPL ING DR
Abstract: In smelting iron ore, the washed sludge has the water extracted to a residual moisture level before further processing. Coal dust is added to the sludge, together with quicklime (30) as a bonding agent. The sludge is granulated to be returned to the smelting gassing zone (15) to increase the base level of the slag (17) to a max. 1.25 and pref. max. 1.20. Before further processing, the sludge water content is reduced to 25-50% and pref. 35-40%. After water extraction, coal dust is added at a rate of up to 30%, and pref. up to 25%. Before the granules are fed to the smelting gassing zone (15), they are given a carbonate coating through an exhaust gas with a CO2 content. The carbonate granule coating is applied in a coal drying assembly (32).
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公开(公告)号：JPH06340909A
公开(公告)日：1994-12-13
申请号：JP26341393
申请日：1993-10-21
Applicant: VOEST ALPINE IND ANLAGEN , RES INST IND SCIENCE & TECH
Inventor： KEPPLINGER LEOPOLD WERNER DIPL , MATZAWRAKOS PANAJIOTIS DIPL IN , SCHENK JOHANNES DIPL ING DR , SIUKA DIETER DIPL ING , BOEHM CHRISTIAN DIPL ING
IPC: C21B13/00 , C21B5/00 , C21B11/00 , C21B11/02 , C21B13/14 , C22B1/14 , F27B1/20 , F27B1/21 , F27B15/10 , F27B15/14 , F27D3/10 , F27D13/00
Abstract: Export gas from the preheating zone (2), possibly with an addition of reduction gas from the reduction zone (18), is used for production of hot-briquetted iron. Fine ore is preheated in a preheating zone, then largely reduced at least in one reduction zone before it is fed to a compacting and briquetting unit. The heated export gas is directed into at least one reduction zone to produce a fluidized-layer bed. This gas is then extracted and fed (with partial combustion to rise its temperature) into the preheating zone to produce a fluidized-layer bed. The installation includes a gas line (6) with a CO washer and a heating unit leading to at least one further reduction reactor (8) connected by a gas line to a preheating reactor (1) with fluidized-layer bed.
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公开(公告)号：ATA16122000A
公开(公告)日：2001-10-15
申请号：AT16122000
申请日：2000-09-22
Applicant: VOEST ALPINE IND ANLAGEN , VOEST ALPINE IND ANLAGEN
Abstract: The invention relates to an apparatus and a process for distributing a lumpy bulk material, in particular iron ore which has been at least partially prereduced, onto an extensive surface, in particular onto a fixed bed, this surface extending within a reactor or vessel used in physical or chemical process technology, in particular in a reactor used in a metallurgical plant to produce pig iron or primary steel products, and the lumpy bulk material being charged via at least one charging apparatus, which has at least two, in particular rotationally symmetrical, chutes, which are preferably arranged at the same distance from the vertical longitudinal axis of the reactor. In this arrangement, at least a proportion of the bulk material, in particular after it has been introduced into the chute, before it comes into contact with the extensive surface, is distributed in the radial and/or tangential direction-as seen from above-at a scattering device which is assigned to at least one of the chutes and is preferably in the chute.
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公开(公告)号：AT409140B
公开(公告)日：2002-05-27
申请号：AT16122000
申请日：2000-09-22
Applicant: VOEST ALPINE IND ANLAGEN , VOEST ALPINE IND ANLAGEN
Abstract: The invention relates to an apparatus and a process for distributing a lumpy bulk material, in particular iron ore which has been at least partially prereduced, onto an extensive surface, in particular onto a fixed bed, this surface extending within a reactor or vessel used in physical or chemical process technology, in particular in a reactor used in a metallurgical plant to produce pig iron or primary steel products, and the lumpy bulk material being charged via at least one charging apparatus, which has at least two, in particular rotationally symmetrical, chutes, which are preferably arranged at the same distance from the vertical longitudinal axis of the reactor. In this arrangement, at least a proportion of the bulk material, in particular after it has been introduced into the chute, before it comes into contact with the extensive surface, is distributed in the radial and/or tangential direction-as seen from above-at a scattering device which is assigned to at least one of the chutes and is preferably in the chute.
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