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EP2013369A2 - Procédé de production de fonte liquide ou de demi-produits en acier liquide à partir d'un matériau sous forme de fines particules contenant de l'oxyde de fer - Google Patents

Procédé de production de fonte liquide ou de demi-produits en acier liquide à partir d'un matériau sous forme de fines particules contenant de l'oxyde de fer

Info

Publication number
EP2013369A2
EP2013369A2 EP07724363A EP07724363A EP2013369A2 EP 2013369 A2 EP2013369 A2 EP 2013369A2 EP 07724363 A EP07724363 A EP 07724363A EP 07724363 A EP07724363 A EP 07724363A EP 2013369 A2 EP2013369 A2 EP 2013369A2
Authority
EP
European Patent Office
Prior art keywords
reducing gas
fluidized bed
iron oxide
gas
bed reactor
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP07724363A
Other languages
German (de)
English (en)
Inventor
Bogdan Vuletic
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SIEMENS VAI METALS Technologies GmbH
Original Assignee
Siemens VAI Metals Technologies GmbH and Co
Siemens VAI Metals Technologies GmbH Austria
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
Application filed by Siemens VAI Metals Technologies GmbH and Co, Siemens VAI Metals Technologies GmbH Austria filed Critical Siemens VAI Metals Technologies GmbH and Co
Publication of EP2013369A2 publication Critical patent/EP2013369A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B13/00—Making spongy iron or liquid steel, by direct processes
    • C21B13/14—Multi-stage processes processes carried out in different vessels or furnaces
    • C21B13/143—Injection of partially reduced ore into a molten bath
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B13/00—Making spongy iron or liquid steel, by direct processes
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B13/00—Making spongy iron or liquid steel, by direct processes
    • C21B13/0006—Making spongy iron or liquid steel, by direct processes obtaining iron or steel in a molten state
    • C21B13/0013—Making spongy iron or liquid steel, by direct processes obtaining iron or steel in a molten state introduction of iron oxide into a bath of molten iron containing a carbon reductant
    • C21B13/002—Reduction of iron ores by passing through a heated column of carbon
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B13/00—Making spongy iron or liquid steel, by direct processes
    • C21B13/0033—In fluidised bed furnaces or apparatus containing a dispersion of the material
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B13/00—Making spongy iron or liquid steel, by direct processes
    • C21B13/14—Multi-stage processes processes carried out in different vessels or furnaces
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B2100/00—Handling of exhaust gases produced during the manufacture of iron or steel
    • C21B2100/20—Increasing the gas reduction potential of recycled exhaust gases
    • C21B2100/28—Increasing the gas reduction potential of recycled exhaust gases by separation
    • C21B2100/282—Increasing the gas reduction potential of recycled exhaust gases by separation of carbon dioxide
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B2100/00—Handling of exhaust gases produced during the manufacture of iron or steel
    • C21B2100/40—Gas purification of exhaust gases to be recirculated or used in other metallurgical processes
    • C21B2100/44—Removing particles, e.g. by scrubbing, dedusting
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B2100/00—Handling of exhaust gases produced during the manufacture of iron or steel
    • C21B2100/60—Process control or energy utilisation in the manufacture of iron or steel
    • C21B2100/64—Controlling the physical properties of the gas, e.g. pressure or temperature
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/10—Reduction of greenhouse gas [GHG] emissions
    • Y02P10/122—Reduction of greenhouse gas [GHG] emissions by capturing or storing CO2
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/10—Reduction of greenhouse gas [GHG] emissions
    • Y02P10/134—Reduction of greenhouse gas [GHG] emissions by avoiding CO2, e.g. using hydrogen

Definitions

  • the invention relates to a process for the production of liquid pig iron or liquid steel precursors from feinchenchenigem iron oxide containing material, wherein finely particulate iron oxide material with the aid of a reducing gas prereduced in at least one prereduction stage and then reduced in a Endreduktionsmodel to sponge iron, the sponge iron in a melter gasification zone with supply of carbon carriers and oxygen-containing gas melted and a CO and H 2- containing reduction gas is generated, which is introduced into the Endreduktionshand, where implemented, withdrawn, then introduced into at least one prereduction stage, where it is reacted and withdrawn. Furthermore, the invention relates to a device for carrying out this method.
  • a method of this kind is already known, for example, from EP 969 107 A1.
  • several fluidized bed reactors are used, which are arranged in a cascade.
  • the fine ore particles tend very strongly to agglomeration in the reduction in the fluidized bed reactors, this effect occurs increasingly with increasing degree of fineness of the ore particles, with increasing reduction gas temperatures and with increasing degree of metallization.
  • so far only such fluidized bed processes could be realized industrially and with acceptable cleaning and maintenance and availability of the system, with relatively low degree of metallization of the sponge iron of about 70% or coarser fine ore (0 - 10 mm) and reducing gas temperatures below 800 0 C.
  • This energy deficit can be compensated by various additional measures.
  • the additionally required energy input can be covered by a higher specific amount of reducing gas per ton Möller or by an additional partial combustion of CO and H 2 by blowing oxygen.
  • increasing the specific amount of reducing gas also results in less CO and H 2 having to be burned in the connecting lines between the fluidized bed reactors to raise the reducing gas temperature to an optimum value for the subsequent fluidized bed reactor.
  • the reducing gas required for the reduction of the iron oxides and the calcination of the additives is used in a melter gasifier using coal as the gasification agent and oxygen or oxygen-enriched air as an oxidizing agent.
  • the heat generated during the gasification process is melted in the melter gasifier to melt sponge iron and the necessary additives to pig iron and slag, which are tapped at certain intervals.
  • the object of the present invention is to obviate these drawbacks and difficulties and has as its object the further development of the above-described method and apparatus for producing molten pig iron or liquid steel precursors from finely particulate iron oxide-containing material so that the melter gasifier can be driven at a higher output as its associated fluidized bed reactors and the production process thus runs more stable. Furthermore, the necessity between the fluidized bed reactors to carry out an energy input by combustion of CO and H 2 in the connecting pipelines should be substantially reduced or at least largely avoided.
  • This object is achieved in that a proportion of the finely particulate iron oxide-containing material is introduced via at least one prereduction stage and a final reduction stage in a melter gasification zone and a further proportion of finely particulate iron oxide-containing material directly or together with the carbon carriers and the oxygen-containing gas in the Einschmelzvergasungszone.
  • the melter gasifier is operated for up to 8 hours, for longer stoppages up to 12 hours, and for cleaning fluidized bed reactors for about 4 days with purchased HBI.
  • HBI hot compacted iron
  • the proportion of the fine particulate iron oxide-containing material charged directly or together with the carbon carriers and the oxygen-containing gas is 10% to 20% of the total amount of the fine particulate iron oxide-containing material used.
  • a particularly favorable composition of the reducing gas leaving the melt-down gasification zone is achieved when carbon monoxide and oxygen-containing gas are fed to the meltdown gasification zone in an amount such that the amount of CO 2 in the reducing gas leaving the meltdown gasification zone is in a range of 4% to 9%, preferably in one range less than 6%.
  • the reducing gas emerging from the meltdown gasification zone is subjected to hot dedusting and subsequently fed to the final reduction stage and preferably to all prereduction stages having an increased, preferably a 10% increased, specific amount of reducing gas.
  • the prereduction stages hot treated reducing gas bypass is added to the colder reducing gas stream from the Endreduktionsgraphic or the colder reducing gas stream from the last prereduction stage and increases the heat content of the mixed gas.
  • the fluidized bed reactors are cleaned at intervals of 2 to 2.5 months to remove clogs and caking of sponge iron, causing about 4 days of production downtime with each shutdown.
  • Particularly favorable conditions for the reduction process in the prereduction stages, in particular in the second prereduction stage, are achieved when 5% to 15%, preferably about 10%, of the treated reduction gas is admixed with the reducing gas leaving the final reduction stage prior to entry into the upstream prereduction stage.
  • the sponge iron required during the Abfahrphase and during the heating of the fluidized bed reactors, which is continuously produced during the continuous operation of the plant as intended surplus quantity is continuously discharged from the Endreduktionscut.
  • a partial amount of about 5% to 15%, preferably about 10%, of the total amount of sponge iron produced is discharged from the final reduction stage and cooled.
  • a plant for the production of liquid pig iron or liquid steel precursors of finely particulate iron oxide containing material with at least two series-connected fluidized bed reactors, wherein fine particulate iron oxide material from fluidized bed reactor to fluidized bed reactor via feed lines in one direction and the reducing gas from fluidized bed reactor to fluidized bed reactor via reducing gas connecting lines in the opposite direction, and with a melter carburetor into which a sponge leading out of the fluidized bed reactor in the flow direction of the felchenförmigen iron oxide containing material feed line leads, the lead for carbon support and for oxygen-containing gases, and a tap for pig iron or steel prematerial and slag, and one in the flow direction of the iron oxide-containing material last arranged fluidized bed reactor open de reduction gas discharge for reducing gas formed in the melter gasifier, characterized in that a first branch conveying line for a proportion of finely particulate iron oxide material is formed by a feed line from fluidized bed reactor to fluidized bed reactor and a subsequent delivery line to the melter gasifier and
  • the second branch conveying line for the further proportion of the finely particulate iron oxide-containing material opens into a connecting conveyor line from a feeding device for feeding carbon carriers and oxygen-containing gases into the melter gasifier. This results in a metered and coordinated introduction of iron oxide-containing material, carbon carriers and oxygen-containing gas.
  • the second branch conveying pipe is designed for passage of from 10% to 15% of the total amount of the fine particulate iron oxide-containing material used.
  • the metered addition of preferably from the first prereduction stage extracted and treated blast furnace gas for the treated reduction gas from the melter gasifier is advantageously achieved in that in the reducing gas discharge a H adoptedstaubungsstrom, preferably a hot gas cyclone is switched that in the reducing gas discharge temperature measuring device for detecting the reduction gas temperature is arranged and the output side of the CO 2 removal plant a top gas line with an inlet quantity control device for adjusting the reduction gas temperature in the leading to the fluidized bed reactor Endervuktionstell reducing gas discharge opens.
  • the adjustment of the reducing gas temperature before entering the fluidized bed reactors of the prereduction stages is carried out by introducing individual reducing gas connecting lines between the reducing gas discharge and the at least one fluidized bed reactor in addition to the reducing gas connecting lines leading from the fluidized bed reactor to fluidized bed reactor and the reducing gas discharge leading to the fluidized bed reactor Pre-reaction stage are provided and these reducing gas connecting lines are assigned encouragenregulier wornen for metered addition of reducing gas.
  • This outsourced and stocked sponge iron is used again during business interruptions.
  • the plant according to the invention comprises three series-connected fluidized bed reactors 1,
  • Material containing iron oxide is supplied in the form of fine ore from an ore feed device 4 via an ore feed line 5 and a branch feed line 5a to the first fluidized bed reactor 1, in which a preheating of the fine ore and a first prereduction takes place in the first prereduction stage. Subsequently, the pretreated fine ore is forwarded via a feed line 6a into the fluidized bed reactor 2 and via a further feed line 6b into the fluidized bed reactor
  • the second prereduction stage a further prereduction of the fine ore takes place and in the fluidized bed reactor 3, the final reduction stage, the end reduction of the fine ore to sponge iron takes place.
  • Sponge iron is discharged from the fluidized bed reactor 3 and passed through a feed line 7 in the melter gasifier 8.
  • iron oxide-containing material is introduced directly into the melter gasifier 8 through a second branch delivery line 5b.
  • This branch conveyor line opens into a connection conveyor line 9 through which coal is introduced directly from a feed device 10 into the melter gasifier 8.
  • air is used as the carrier gas.
  • a subset of the produced sponge iron is diverted via the feed line 7a from the fluidized bed reactor 3 and fed to a cooling device not shown, where it is cooled and stored. This sponge iron is used again in the Abfahrphase and during the heating of the fluidized bed reactors.
  • a CO and H 2 -containing reducing gas is generated in a meltdown gasification zone 8a of coal and oxygen-containing gas, which is withdrawn from the melter gasifier with a reducing gas discharge line 12.
  • reducing gas connection lines 14a in countercurrent to Erz
  • the separated in the hot dedusting system 13 fine dust is introduced via return lines 15 back into the melter gasifier 8.
  • the spent reducing gas leaves the fluidized bed reactor 1 as top gas through the top gas 16a, flows through a top gas scrubber 17 and after a compressor 18, a CO 2 removal plant 19.
  • a partial flow of the thus treated top gas is recycled through the top gas 16b and the reducing gas stream in the reducing gas -Veritatistechnisch 14 a fed just before entering the fluidized bed reactor 3 metered.
  • the instantaneous reduction gas temperature in the reducing gas connecting line 14 a is measured prior to entry into the fluidized bed reactor 3 and the metered admixing of the treated top gas from the top gas line 16 b takes place as a function of the optimum reducing gas temperature at the inlet to the fluidized bed reactor 3 by a quantity regulator 21 in the top gas 16b.
  • a partial stream of fresh reducing gas can be fed into the top gas line 16a upstream of a compressor 18 after a wash in a scrubber 23, whereby the operating conditions of the CO 2 removal system 19 are improved.
  • the reducing gas connecting lines 14d, 14e are also assigned a quantity regulating device 21 and optionally the reducing gas connecting lines 14d, 14e for more precise control of the admixing of a temperature measuring device 20.
  • the melter gasifier 8 open one or more feed lines 9 for solid carbon carriers and an air line for oxygen-containing gases.
  • molten pig iron or molten steel pre-material and molten slag which are tapped via taps 23, 24, collect below the melt-down gasification zone 8a.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Manufacture Of Iron (AREA)
  • Manufacture Of Metal Powder And Suspensions Thereof (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)

Abstract

L'invention concerne un procédé de production de fonte liquide ou de demi-produits en acier liquide à partir d'un matériau sous forme de fines particules contenant de l'oxyde de fer, ce matériau sous forme de fines particules contenant de l'oxyde de fer étant préréduit au moyen d'un gaz de réduction dans au moins un étage de préréduction puis réduit en une éponge de fer dans un étage de réduction finale, l'éponge de fer étant fondue dans une zone de gazéification-fusion avec apport de gaz oxygéné et de supports carbonés et un gaz de réduction contenant du CO et du H<SUB>2 </SUB>étant formé, lequel gaz est introduit dans l'étage de réduction finale, où ce gaz est transformé et duquel il est retiré, puis introduit dans au moins un étage de préréduction, où ce gaz est transformé et duquel il est retiré. L'objectif de l'invention est de pouvoir faire fonctionner le réacteur de gazéification-fusion avec une puissance accrue, de sorte que le processus de production se déroule de manière plus stable, et d'éviter des combustions partielles jusqu'à présent nécessaires dans les conduites de gaz de réduction. A cet effet, une fraction du matériau sous forme de fines particules contenant de l'oxyde de fer est introduite dans une zone de gazéification-fusion par l'intermédiaire d'au moins un étage de préréduction et un étage de réduction finale et une autre fraction du matériau sous forme de fines particules contenant de l'oxyde de fer est introduite directement ou avec les supports carbonés et le gaz oxygéné dans la zone de gazéification-fusion. Cette invention concerne également un dispositif permettant la mise en oeuvre dudit procédé.
EP07724363A 2006-04-28 2007-04-19 Procédé de production de fonte liquide ou de demi-produits en acier liquide à partir d'un matériau sous forme de fines particules contenant de l'oxyde de fer Withdrawn EP2013369A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0073206A AT503593B1 (de) 2006-04-28 2006-04-28 Verfahren zur herstellung von flüssigem roheisen oder flüssigen stahlvorprodukten aus feinteilchenförmigem eisenoxidhältigem material
PCT/EP2007/003426 WO2007124870A2 (fr) 2006-04-28 2007-04-19 Procédé de production de fonte liquide ou de demi-produits en acier liquide à partir d'un matériau sous forme de fines particules contenant de l'oxyde de fer

Publications (1)

Publication Number Publication Date
EP2013369A2 true EP2013369A2 (fr) 2009-01-14

Family

ID=38654831

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07724363A Withdrawn EP2013369A2 (fr) 2006-04-28 2007-04-19 Procédé de production de fonte liquide ou de demi-produits en acier liquide à partir d'un matériau sous forme de fines particules contenant de l'oxyde de fer

Country Status (14)

Country Link
US (2) US8016910B2 (fr)
EP (1) EP2013369A2 (fr)
JP (1) JP2009535498A (fr)
KR (1) KR20090007778A (fr)
CN (1) CN101437965B (fr)
AT (1) AT503593B1 (fr)
AU (1) AU2007245912B2 (fr)
BR (1) BRPI0710936A2 (fr)
CA (1) CA2650424A1 (fr)
MX (1) MX2008013574A (fr)
RU (1) RU2445377C2 (fr)
UA (1) UA93549C2 (fr)
WO (1) WO2007124870A2 (fr)
ZA (1) ZA200808967B (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT507003B1 (de) * 2008-06-27 2010-03-15 Siemens Vai Metals Tech Gmbh Prozessgas-reinigungseinrichtung für eine schmelzreduktionsanlage zur gewinnung von roheisen
AT509865B1 (de) * 2010-04-26 2011-12-15 Siemens Vai Metals Tech Gmbh Verfahren zur herstellung von roheisen oder flüssigen stahlvorprodukten
CA2883863A1 (fr) * 2015-03-04 2016-09-04 Nova Chemicals Corporation Conduit ameliore destine a la fabrication du fer
CN106467930B (zh) * 2016-09-28 2019-05-17 中国科学院过程工程研究所 一种钒钛磁铁矿流态化高温快速氧化还原的系统及方法
CN106319126B (zh) * 2016-09-28 2019-05-17 中国科学院过程工程研究所 一种用于钒钛磁铁矿流态化氧化还原的系统及方法
SE543341C2 (en) * 2019-04-01 2020-12-08 Greeniron H2 Ab Method and device for producing direct reduced metal
DE102019217631B4 (de) 2019-11-15 2024-05-29 Thyssenkrupp Steel Europe Ag Verfahren zur Direktreduktion von Eisenerz
CN112923733B (zh) * 2021-02-02 2023-08-01 北京绿清科技有限公司 采用多炉串联分级熔融炉生产碳化硅的方法以及生产系统

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE373944C (de) 1923-04-17 Hartmann & Braun Akt Ges Verfahren zur Herstellung von glasierten Schutzrohren fuer elektrische Waermemesser
AT382390B (de) * 1985-03-21 1987-02-25 Voest Alpine Ind Anlagen Verfahren zur herstellung von fluessigem roheisen oder stahlvorprodukten
AT401777B (de) 1992-05-21 1996-11-25 Voest Alpine Ind Anlagen Verfahren und anlage zur herstellung von flüssigen roheisen oder flüssigen stahlvorprodukten
AT404735B (de) * 1992-10-22 1999-02-25 Voest Alpine Ind Anlagen Verfahren und anlage zur herstellung von flüssigem roheisen oder flüssigen stahlvorprodukten
DE4240194C1 (de) 1992-11-30 1994-06-01 Bogdan Dipl Ing Vuletic Verfahren zur Herstellung von Roheisen aus Feinerz und Vorrichtung zu seiner Durchführung
AT405186B (de) * 1994-10-17 1999-06-25 Voest Alpine Ind Anlagen Anlage und verfahren zur herstellung von roheisen und/oder eisenschwamm
KR970003636B1 (ko) * 1994-12-31 1997-03-20 포항종합제철 주식회사 용융선철 및 용융강 제조시 분철광석을 환원시키는 환원로
AT406482B (de) * 1995-07-19 2000-05-25 Voest Alpine Ind Anlagen Verfahren zur herstellung von flüssigem roheisen oder stahlvorprodukten und anlage zur durchführung des verfahrens
AT406485B (de) * 1995-10-10 2000-05-25 Voest Alpine Ind Anlagen Verfahren zur herstellung von flüssigem roheisen oder flüssigen stahlvorprodukten und anlage zur durchführung des verfahrens
KR100213327B1 (ko) * 1995-12-29 1999-08-02 이구택 분철광석의 3단 유동층로식 환원장치
AT405525B (de) * 1996-06-28 1999-09-27 Voest Alpine Ind Anlagen Verfahren und anlage zum herstellen von flüssigem roheisen oder flüssigen stahlvorprodukten
AT405742B (de) * 1996-07-10 1999-11-25 Voest Alpine Ind Anlagen Verfahren zur herstellung von flüssigem metall und anlage zur durchführung des verfahrens
AT404256B (de) * 1996-11-06 1998-10-27 Voest Alpine Ind Anlagen Verfahren zum herstellen von eisenschwamm
KR100276339B1 (ko) * 1996-12-23 2000-12-15 이구택 엑스자형 순환관을 갖는 분철광석의 3단 유동층로식 환원장치
AT405840B (de) * 1997-02-11 1999-11-25 Voest Alpine Ind Anlagen Verfahren und anlage zur herstellung von flüssigem roheisen oder flüssigen stahlvorprodukten
AT406272B (de) * 1997-11-10 2000-03-27 Voest Alpine Ind Anlagen Verfahren zur herstellung von direkt reduziertem eisen, flüssigem roheisen und stahl sowie anlage zur durchführung des verfahrens
WO1999032668A1 (fr) * 1997-12-20 1999-07-01 Pohang Iron & Steel Co., Ltd. Appareil permettant de fabriquer de la fonte brute en fusion et du fer reduit a l'aide d'un lit fluidise et procede s'y rapportant
AT409387B (de) * 2000-06-28 2002-07-25 Voest Alpine Ind Anlagen Verfahren und anlage zur gasreduktion von teilchenförmigen oxidhältigen erzen

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2007124870A2 *

Also Published As

Publication number Publication date
KR20090007778A (ko) 2009-01-20
BRPI0710936A2 (pt) 2012-02-14
ZA200808967B (en) 2009-12-30
CN101437965B (zh) 2012-03-21
JP2009535498A (ja) 2009-10-01
RU2445377C2 (ru) 2012-03-20
AU2007245912B2 (en) 2011-02-24
AT503593A1 (de) 2007-11-15
US8016910B2 (en) 2011-09-13
US20090090217A1 (en) 2009-04-09
RU2008146999A (ru) 2010-06-10
AT503593B1 (de) 2008-03-15
UA93549C2 (ru) 2011-02-25
WO2007124870A2 (fr) 2007-11-08
CN101437965A (zh) 2009-05-20
MX2008013574A (es) 2008-11-04
AU2007245912A1 (en) 2007-11-08
CA2650424A1 (fr) 2007-11-08
WO2007124870A3 (fr) 2008-03-20
US20110285067A1 (en) 2011-11-24

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