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EP1670958A2 - Procede et appareil de production de fonte - Google Patents

Procede et appareil de production de fonte

Info

Publication number
EP1670958A2
EP1670958A2 EP04769713A EP04769713A EP1670958A2 EP 1670958 A2 EP1670958 A2 EP 1670958A2 EP 04769713 A EP04769713 A EP 04769713A EP 04769713 A EP04769713 A EP 04769713A EP 1670958 A2 EP1670958 A2 EP 1670958A2
Authority
EP
European Patent Office
Prior art keywords
melting furnace
iron
molten iron
producing molten
gas
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Withdrawn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
EP04769713A
Other languages
German (de)
English (en)
Inventor
Ricardo Mirador de la Sierra 347 VIRAMONTES-BROWN
Juan A. Villarreal-Trevino
Ronald V. M. Mario Talavera224 LOPEZ-GOMEZ
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.)
Hylsa SA de CV
Original Assignee
Hylsa SA de CV
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 Hylsa SA de CV filed Critical Hylsa SA de CV
Publication of EP1670958A2 publication Critical patent/EP1670958A2/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Withdrawn legal-status Critical Current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
    • C21B13/02—Making spongy iron or liquid steel, by direct processes in shaft furnaces
    • 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
    • C21B13/14—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
    • 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
    • C21B2100/22—Increasing the gas reduction potential of recycled exhaust gases by reforming
    • 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

  • Stift discloses a method and apparatus for reducing iron ores in a shaft furnace, which is integrated to a melting furnace. Iron ores are introduced into the upper portion of the shaft without addition of coke and descend through the shaft in countercurrent to ascending reducing gases produced outside the furnace through partial combustion. Hot reducing gases and powdered carbon are introduced toward a molten iron bath in the melting portion of the furnace, Stiffs process however requires additional heat to be provided to the hot gases besides the heat produced by the partial combustion, and the integration of the reduction shaft with the melting furnace does not allow for providing the optimal conditions for the three main processes involved, namely: reduction of ores, melting of reduced ores and production of reducing gases.
  • exhausted reducing gas 60 is withdrawn from reactor 38 and passes through heat exchanger 62 where water from source 64 is made into steam 65 that can be used in burners 24 or CO 2 removal system 78.
  • the exhausted reducing gas 60 is then cooled down in cooler 66 by, for example, contacting said gas with water. This process condenses any residual water content out of the exhausted reducing gas.
  • a minor portion 68 of the cooled gas, regulated by control valve 70, is purged from the reduction circuit thus eliminating inert gases and simultaneously regulating the pressure of the system.
  • the reduction gas is used to transform the iron ore into DRI for use in the melting furnace.
  • the reduction furnace 38 operates substantially the same as the reduction furnace described with relation to the embodiment shown in Fig. 1.
  • the graph shows the preferred operating range of the ratio of volume of oxygen to volume of natural gas in the gas generating zones 22 or the gas generating furnace 21 so that the temperature of the gases reach such a level as to melt the DRI, and also that the amount of heat produced is sufficient to melt the required amount of DRI and at the same time provide sufficient amounts of reducing gases (H2 + CO) for reducing the iron oxides in furnace 38 to DRI.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)
  • Manufacture Of Iron (AREA)
  • Furnace Details (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Abstract

Système de production de fonte à partir de minerais de fer, comprenant un four à cuve verticale et à réduction directe, une zone de fusion dans un four de fusion présentant un lit de coke dans sa partie inférieure et une chambre de chargement et de préchauffage dans sa partie supérieure, et au moins une zone de génération de gaz réducteur en communication avec ladite zone de fusion.
EP04769713A 2003-09-30 2004-09-30 Procede et appareil de production de fonte Withdrawn EP1670958A2 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US50716003P 2003-09-30 2003-09-30
US10/953,735 US20050151307A1 (en) 2003-09-30 2004-09-29 Method and apparatus for producing molten iron
PCT/IB2004/003483 WO2005031009A2 (fr) 2003-09-30 2004-09-30 Procede et appareil de production de fonte

Publications (1)

Publication Number Publication Date
EP1670958A2 true EP1670958A2 (fr) 2006-06-21

Family

ID=34396341

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04769713A Withdrawn EP1670958A2 (fr) 2003-09-30 2004-09-30 Procede et appareil de production de fonte

Country Status (6)

Country Link
US (1) US20050151307A1 (fr)
EP (1) EP1670958A2 (fr)
AU (1) AU2004276579A1 (fr)
BR (1) BRPI0414951A (fr)
RU (1) RU2006114771A (fr)
WO (1) WO2005031009A2 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1995402B (zh) * 2006-01-06 2011-11-16 伊尔技术有限公司 利用焦炉气等将氧化铁直接还原成金属铁的方法
EP2440677B1 (fr) * 2009-06-10 2018-08-08 Keki Hormusji Gharda Procédé de production de fer, fonte aciérée et gaz réducteurs
US9797023B2 (en) 2013-12-20 2017-10-24 Grede Llc Shaft furnace and method of operating same
EP2905345A1 (fr) * 2014-02-10 2015-08-12 Primetals Technologies Austria GmbH Chargement pneumatique de minerai
WO2016148555A1 (fr) * 2015-03-13 2016-09-22 Сулейман Мустафьевич ТЛЕУГАБУЛОВ Procédé de fusion réductrice d'acier et dispositif pour sa mise en oeuvre
US12000011B2 (en) * 2021-06-22 2024-06-04 Midrex Technologies, Inc. System and method for the production of hot briquetted iron (HBI) containing flux and/or carbonaceous material at a direct reduction plant
KR20250148638A (ko) * 2023-02-08 2025-10-14 해치 리미티드 전기로에 공급하기 위한 시스템 및 방법

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US2889219A (en) * 1956-12-28 1959-06-02 Inland Steel Co Control method and apparatus for iron ore reduction process
US2928730A (en) * 1957-01-15 1960-03-15 Inland Steel Co Iron ore reduction process
US2919983A (en) * 1958-05-22 1960-01-05 Inland Steel Co Iron ore reduction process
GB988579A (en) * 1960-09-14 1965-04-07 Huettenwerk Oberhausen Ag Improvements in and relating to the production of liquid pig iron from ore
US3282677A (en) * 1963-04-30 1966-11-01 Futakuchi Method of manufacturing iron by low temperature reduction with use of methane gas
IT1038230B (it) * 1974-05-22 1979-11-20 Krupp Gmbh Procedimento per la produzione di acciaio
US4001008A (en) * 1974-08-06 1977-01-04 Vereinigte Osterreichische Eisen- Und Stahlwerke-Alpine Montan Aktiengesellschaft Method and apparatus for the reduction of ores, especially iron ores
US4316739A (en) * 1979-07-16 1982-02-23 Midrex Corporation Method for producing molten iron
US4248626A (en) * 1979-07-16 1981-02-03 Midrex Corporation Method for producing molten iron from iron oxide with coal and oxygen
US4246024A (en) * 1979-10-31 1981-01-20 Grupo Industrial Alfa, S.A. Method for the gaseous reduction of metal ores using reducing gas produced by gasification of solid or liquid fossil fuels
SE457265B (sv) * 1981-06-10 1988-12-12 Sumitomo Metal Ind Foerfarande och anlaeggning foer framstaellning av tackjaern
DE3437913C2 (de) * 1984-10-12 1987-05-07 Korf Engineering GmbH, 4000 Düsseldorf Verfahren und Vorrichtung zur Herstellung von Eisenschwamm und/oder flüssigem Roheisen
US4571259A (en) * 1985-01-18 1986-02-18 Westinghouse Electric Corp. Apparatus and process for reduction of metal oxides
DE3503493A1 (de) * 1985-01-31 1986-08-14 Korf Engineering GmbH, 4000 Düsseldorf Verfahren zur herstellung von roheisen
US4664389A (en) * 1985-10-08 1987-05-12 Barclay Precision Toys Inc. Toy car and method of utilzing same
BR8605001A (pt) * 1986-10-13 1988-05-31 Setepla Tecnometal Engenharia Equipamento para producao de metais ferrosos ou nao a partir de minerios ou aglomerados auto-redutores e auto-fundentes ou nao
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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
AT406483B (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
AUPN639995A0 (en) * 1995-11-03 1995-11-30 Technological Resources Pty Limited A method and an apparatus for producing metals and metal alloys
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AUPO276496A0 (en) * 1996-10-07 1996-10-31 Technological Resources Pty Limited A method and an apparatus for producing metals and metal alloys
AT404138B (de) * 1996-10-08 1998-08-25 Voest Alpine Ind Anlagen Verfahren zur herstellung von flüssigem roheisen oder stahlvorprodukten sowie anlage zur durchführung des verfahrens
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Also Published As

Publication number Publication date
RU2006114771A (ru) 2007-11-10
BRPI0414951A (pt) 2006-11-07
US20050151307A1 (en) 2005-07-14
AU2004276579A1 (en) 2005-04-07
WO2005031009A3 (fr) 2006-04-13
WO2005031009A2 (fr) 2005-04-07

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