CO4870794A1 - Procedimiento para producir hierro esponjoso mediante la reduccion directa de material que contiene oxido de hierro - Google Patents

Procedimiento para producir hierro esponjoso mediante la reduccion directa de material que contiene oxido de hierro

Info

Publication number
CO4870794A1
CO4870794A1 CO97064767A CO97064767A CO4870794A1 CO 4870794 A1 CO4870794 A1 CO 4870794A1 CO 97064767 A CO97064767 A CO 97064767A CO 97064767 A CO97064767 A CO 97064767A CO 4870794 A1 CO4870794 A1 CO 4870794A1
Authority
CO
Colombia
Prior art keywords
gas
iron oxide
reduction
direct reduction
iron
Prior art date
Application number
CO97064767A
Other languages
English (en)
Inventor
Johann Reidetschlag
Siegfried Zeller
Felix Wallner
Hubert Whipp Roy Jr
Original Assignee
Voest Alpine Ind Anlagen
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 Voest Alpine Ind Anlagen filed Critical Voest Alpine Ind Anlagen
Publication of CO4870794A1 publication Critical patent/CO4870794A1/es

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
    • C21B13/0073—Selection or treatment of the reducing gases
    • 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
    • C21B13/146—Multi-step reduction without melting
    • 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
    • C21B2100/26—Increasing the gas reduction potential of recycled exhaust gases by adding additional fuel in recirculation pipes
    • 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
    • C21B2100/42—Sulphur removal
    • 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
    • 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
    • Y02P10/143—Reduction of greenhouse gas [GHG] emissions of methane [CH4]

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 And Refinement Of Metals (AREA)
  • Catalysts (AREA)

Abstract

Procedimiento para producir hierro esponjoso por reduccióndirecta de material que contiene óxido de hierro, en el cual gas de síntesis, preferentemente gas natural reformado, se mezcla con gas de cabeza que se forma en la reducción directa del material que contiene óxido de hierro y siendo empleado como gas reductor que contiene CO- y H2- para la reducción directa y para el calentamiento del material que contiene óxido de hierro a la temperatura de reducción, caracterizado por la combinación de las siguientes etapas operativas: - utilizar para la reducción además del gas reductor un gas que contiene carbono tal como gas natural o un gas que contiene hidrocarburos de mayor número de átomos de carbono; - exponer al material que contiene óxido de hierro al gas reductor y al gas que contiene carbono alimentado adicionalmente durante un período predeterminado que excede al período necesario para la reducción completa: y - ajustar en el gas reductor una razón CO/CO2 comprendida entre 2 y 5, preferentemente en una razón que excede 2,5.
CO97064767A 1996-11-06 1997-11-05 Procedimiento para producir hierro esponjoso mediante la reduccion directa de material que contiene oxido de hierro CO4870794A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT0193396A AT406382B (de) 1996-11-06 1996-11-06 Verfahren zum herstellen von eisenschwamm durch direktreduktion von eisenoxidhältigem material

Publications (1)

Publication Number Publication Date
CO4870794A1 true CO4870794A1 (es) 1999-12-27

Family

ID=3524163

Family Applications (1)

Application Number Title Priority Date Filing Date
CO97064767A CO4870794A1 (es) 1996-11-06 1997-11-05 Procedimiento para producir hierro esponjoso mediante la reduccion directa de material que contiene oxido de hierro

Country Status (16)

Country Link
US (1) US6143053A (es)
EP (1) EP0871782B1 (es)
JP (1) JP4327253B2 (es)
AR (1) AR009597A1 (es)
AT (1) AT406382B (es)
AU (1) AU734371B2 (es)
BR (1) BR9707113A (es)
CA (1) CA2242255C (es)
CO (1) CO4870794A1 (es)
DE (1) DE59705887D1 (es)
ID (1) ID21829A (es)
MX (1) MX9805413A (es)
MY (1) MY132734A (es)
PE (1) PE76199A1 (es)
WO (1) WO1998020171A1 (es)
ZA (1) ZA979929B (es)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6478841B1 (en) 2001-09-12 2002-11-12 Techint Technologies Inc. Integrated mini-mill for iron and steel making
SE0301071D0 (sv) * 2003-04-11 2003-04-11 Hoeganaes Ab Gas purification
NZ546643A (en) * 2003-10-03 2008-10-31 Corus Technology Bv Method and apparatus for reducing metal-oxygen compounds
AT506837B1 (de) * 2008-06-06 2010-03-15 Siemens Vai Metals Tech Gmbh Verfahren und vorrichtung zur herstellung von roheisen oder flüssigen stahlvorprodukten
AT508522B1 (de) * 2009-07-31 2011-04-15 Siemens Vai Metals Tech Gmbh Reformergasbasiertes reduktionsverfahren mit vermindertem nox-ausstoss
AT508250B1 (de) * 2009-09-11 2010-12-15 Siemens Vai Metals Tech Gmbh Verfahren zur entfernung von co2 aus abgasen, wie abgase aus anlagen zur roheisenherstellung oder abgase aus synthesegasanlagen
EP2746408A1 (de) * 2012-12-21 2014-06-25 Siemens VAI Metals Technologies GmbH Überhitzung von einem in einem Reduktionsprozess genutzten Exportgas zum Ausgleich von Mengenschwankungen und Vorrichtung zum dessen
CN108699612B (zh) * 2016-02-05 2020-08-18 日本制铁株式会社 向高炉炉身部供给含氢气的还原气体的方法
DE102021112208A1 (de) 2021-05-11 2022-11-17 Thyssenkrupp Steel Europe Ag Verfahren zur Direktreduktion von Eisenerz

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US32247A (en) * 1861-05-07 Vegetable-cutter
US2752234A (en) * 1955-07-07 1956-06-26 United States Steel Corp Process for continuous gaseous reduction of iron ore in a fluidized bed system
US3827879A (en) * 1973-02-22 1974-08-06 Fierro Esponja Method for the gaseous reduction of metal ores
US4053301A (en) * 1975-10-14 1977-10-11 Hazen Research, Inc. Process for the direct production of steel
DE3437913A1 (de) * 1984-10-12 1986-04-24 Korf Engineering GmbH, 4000 Düsseldorf Verfahren und vorrichtung zur herstellung eines eisenschwamms bzw. roheisens
SU1609456A3 (ru) * 1985-07-18 1990-11-23 Кабусики Кайся Кобе Сейкосе (Фирма) Способ пр мого получени железа
US5082251A (en) * 1990-03-30 1992-01-21 Fior De Venezuela Plant and process for fluidized bed reduction of ore
US5118479A (en) * 1990-08-01 1992-06-02 Iron Carbide Holdings, Limited Process for using fluidized bed reactor
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
WO1993014228A1 (en) * 1992-01-17 1993-07-22 Whipp Roy H Improved plant and process for fluidized bed reduction of ore
AT402937B (de) * 1992-05-22 1997-09-25 Voest Alpine Ind Anlagen Verfahren und anlage zur direktreduktion von teilchenförmigem eisenoxidhältigem material
US5869018A (en) * 1994-01-14 1999-02-09 Iron Carbide Holdings, Ltd. Two step process for the production of iron carbide from iron oxide
US5437708A (en) * 1994-05-04 1995-08-01 Midrex International B.V. Rotterdam, Zurich Branch Iron carbide production in shaft furnace
US5618032A (en) * 1994-05-04 1997-04-08 Midrex International B.V. Rotterdam, Zurich Branch Shaft furnace for production of iron carbide
AT402825B (de) * 1994-06-23 1997-09-25 Voest Alpine Ind Anlagen Verfahren zur direktreduktion von eisenoxidhältigem material
AT402938B (de) * 1994-06-23 1997-09-25 Voest Alpine Ind Anlagen Verfahren und anlage zur direktreduktion von verfahren und anlage zur direktreduktion von eisenoxidhältigem material eisenoxidhältigem material

Also Published As

Publication number Publication date
JP2000503349A (ja) 2000-03-21
US6143053A (en) 2000-11-07
EP0871782B1 (de) 2001-12-19
DE59705887D1 (de) 2002-01-31
MY132734A (en) 2007-10-31
AR009597A1 (es) 2000-04-26
ATA193396A (de) 1999-09-15
AU734371B2 (en) 2001-06-14
BR9707113A (pt) 1999-07-20
PE76199A1 (es) 1999-08-12
MX9805413A (es) 1998-10-31
ZA979929B (en) 1998-05-25
ID21829A (id) 1999-07-29
AT406382B (de) 2000-04-25
EP0871782A1 (de) 1998-10-21
CA2242255C (en) 2009-12-29
JP4327253B2 (ja) 2009-09-09
AU4766497A (en) 1998-05-29
WO1998020171A1 (de) 1998-05-14
CA2242255A1 (en) 1998-05-14

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