GB748167A - Process for reducing iron ore by means of a gaseous reducing agent and plant therefor - Google Patents

Process for reducing iron ore by means of a gaseous reducing agent and plant therefor

Info

Publication number
GB748167A
GB748167A GB780354A GB780354A GB748167A GB 748167 A GB748167 A GB 748167A GB 780354 A GB780354 A GB 780354A GB 780354 A GB780354 A GB 780354A GB 748167 A GB748167 A GB 748167A
Authority
GB
United Kingdom
Prior art keywords
carbon dioxide
gas
reducing
steam
gases
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.)
Expired
Application number
GB780354A
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.)
Vetrocoke SpA
Original Assignee
Vetrocoke SpA
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 Vetrocoke SpA filed Critical Vetrocoke SpA
Publication of GB748167A publication Critical patent/GB748167A/en
Expired 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
    • C21B13/0073—Selection or treatment of the reducing gases
    • 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]
    • 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
    • Y02P10/20—Recycling

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacture Of Iron (AREA)

Abstract

A process for reducing iron ore to sponge iron by means of a gaseous reducing agent comprising carbon monoxide and hydrogen comprises removing a part of the gases from a zone of a reducing furnace in which there is final reduction of ferrous oxide to iron, separating from these gases the fully oxidised compounds, e.g. steam and carbon dioxide, therein, and re-cycling the remaining hydrogen and carbon monoxide to the reducing furnace. The carbon dioxide and steam are removed by cooling the gases and subjecting them to washing by a substance capable of absorbing the carbon dioxide. Make-up gas is supplied to the re-cycled gas and is produced by a reaction between methane and carbon dioxide, the latter being obtained during the regeneration of the carbon dioxide absorbing liquid. The reducing gas is preheated before being supplied to the reduction zone and part of the gas from this zone is drawn off and cooled before reaching the main blower, by which time it is cold and has had some of the steam removed. It then passes to a series of washers to remove carbon dioxide and the remainder of the steam, and is finally stored in a gas holder with make-up gas. Specification 728,738, [Group XII], is referred to.
GB780354A 1953-03-17 1954-03-17 Process for reducing iron ore by means of a gaseous reducing agent and plant therefor Expired GB748167A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT748167X 1953-03-17

Publications (1)

Publication Number Publication Date
GB748167A true GB748167A (en) 1956-04-25

Family

ID=11315572

Family Applications (1)

Application Number Title Priority Date Filing Date
GB780354A Expired GB748167A (en) 1953-03-17 1954-03-17 Process for reducing iron ore by means of a gaseous reducing agent and plant therefor

Country Status (1)

Country Link
GB (1) GB748167A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011012448A1 (en) * 2009-07-31 2011-02-03 Siemens Vai Metals Technologies Gmbh Reformed gas-based reduction method with return of the waste reduction gases and decarbonisation of the waste gas component used as combustion gas for the reformer

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011012448A1 (en) * 2009-07-31 2011-02-03 Siemens Vai Metals Technologies Gmbh Reformed gas-based reduction method with return of the waste reduction gases and decarbonisation of the waste gas component used as combustion gas for the reformer
CN102471810A (en) * 2009-07-31 2012-05-23 西门子Vai金属科技有限责任公司 Reformed gas-based reduction method with return of the waste reduction gases and decarbonisation of the waste gas component used as combustion gas for the reformer
US9169535B2 (en) 2009-07-31 2015-10-27 Siemens Vai Metals Technologies Gmbh Reformer-gas-based reduction process with decarbonization of the fuel gas for the reformer
US9797026B2 (en) 2009-07-31 2017-10-24 Primetals Technologies Austria GmbH Reformer-gas-based reduction process with decarbonization of the fuel gas for the reformer

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