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GB2438570A - Process and plant for gas-based direct steelmaking - Google Patents

Process and plant for gas-based direct steelmaking

Info

Publication number
GB2438570A
GB2438570A GB0718926A GB0718926A GB2438570A GB 2438570 A GB2438570 A GB 2438570A GB 0718926 A GB0718926 A GB 0718926A GB 0718926 A GB0718926 A GB 0718926A GB 2438570 A GB2438570 A GB 2438570A
Authority
GB
United Kingdom
Prior art keywords
metal
gas
melt
arm
post
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.)
Granted
Application number
GB0718926A
Other versions
GB0718926D0 (en
GB2438570B (en
Inventor
Noel Alfred Warner
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB0718926D0 publication Critical patent/GB0718926D0/en
Publication of GB2438570A publication Critical patent/GB2438570A/en
Application granted granted Critical
Publication of GB2438570B publication Critical patent/GB2438570B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B3/00—Hearth-type furnaces, e.g. of reverberatory type; Electric arc furnaces ; Tank furnaces
    • F27B3/04—Hearth-type furnaces, e.g. of reverberatory type; Electric arc furnaces ; Tank furnaces of multiple-hearth type; of multiple-chamber type; Combinations of hearth-type 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
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/56—Manufacture of steel by other methods
    • C21C5/567—Manufacture of steel by other methods operating in a continuous way
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B3/00—Hearth-type furnaces, e.g. of reverberatory type; Electric arc furnaces ; Tank furnaces
    • F27B3/10—Details, accessories or equipment, e.g. dust-collectors, specially adapted for hearth-type furnaces
    • F27B3/22—Arrangements of air or gas supply devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D7/00—Forming, maintaining or circulating atmospheres in heating chambers
    • F27D7/06—Forming or maintaining special atmospheres or vacuum within heating chambers
    • 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

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

Abstract

Continuous production of liquid steel or alloy is performed in a closed loop melt circulation system comprised of a reduction arm (1) and a post-combustion arm (2) with product molten metal being circulated by gas-lift pump (3) and siphon (4). Preheated reducing gas (12) is passed countercurrently to the melt with thermochemical energy requirements being transported by the metal from the post-combustion arm. Ore fines (5) are distributed onto the surface of the melt at (10) to form a thin layer of molten oxidic material, which is transported along whilst undergoing gaseous reduction. An overflow weir (7) and phase disengagement region (8) removes slag (9). Carbon and hydrogen containing gases are not permitted direct access to the metal, so decarburisation and desiliconisation are not required. If natural gas is the reductant, neither is desulphurisation necessary. Accordingly, excess refined liquid metal (11) can be withdrawn or overflown directly as product.
GB0718926A 2005-03-02 2006-01-31 Process and plant for gas-based direct steelmaking Expired - Fee Related GB2438570B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB0504260.1A GB0504260D0 (en) 2005-03-02 2005-03-02 Process and plant for gas-based direct steelmaking
PCT/GB2006/000302 WO2006092549A2 (en) 2005-03-02 2006-01-31 Process and plant for gas-based direct steelmaking

Publications (3)

Publication Number Publication Date
GB0718926D0 GB0718926D0 (en) 2007-11-07
GB2438570A true GB2438570A (en) 2007-11-28
GB2438570B GB2438570B (en) 2011-01-26

Family

ID=34430470

Family Applications (2)

Application Number Title Priority Date Filing Date
GBGB0504260.1A Ceased GB0504260D0 (en) 2005-03-02 2005-03-02 Process and plant for gas-based direct steelmaking
GB0718926A Expired - Fee Related GB2438570B (en) 2005-03-02 2006-01-31 Process and plant for gas-based direct steelmaking

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GBGB0504260.1A Ceased GB0504260D0 (en) 2005-03-02 2005-03-02 Process and plant for gas-based direct steelmaking

Country Status (3)

Country Link
AU (1) AU2006219757A1 (en)
GB (2) GB0504260D0 (en)
WO (1) WO2006092549A2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0608080D0 (en) * 2006-04-25 2006-05-31 Warner Noel A Co-production of steel, titanium and high-grade oxide
WO2013075092A1 (en) 2011-11-17 2013-05-23 Nucor Corporation Method of continuous casting thin steel strip
GB201223252D0 (en) * 2012-12-21 2013-02-06 Warner Noel A Zero gas emission continuous steelmaking

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB939377A (en) * 1960-10-10 1963-10-16 Inst Francais Du Petrole Process for the production of cast iron or steel
US5069715A (en) * 1990-04-02 1991-12-03 Regents Of The University Of Minnesota Direct smelting process and apparatus
WO2004000777A1 (en) * 2002-06-25 2003-12-31 Institut Kataliza Imeni G.K. Boreskova Sibirskogo Otdeleniya Rossiiskoi Akademii Nauk Method for producing carbonyl compounds from di- and polyene cyclic hydrocarbons and the derivatives thereof
WO2005118890A2 (en) * 2004-05-29 2005-12-15 Noel Warner Recovery of steel from contaminated scrap

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0216544D0 (en) * 2002-07-17 2002-08-28 Warner Noel A Direct coal-based continuous steelmaking

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB939377A (en) * 1960-10-10 1963-10-16 Inst Francais Du Petrole Process for the production of cast iron or steel
US5069715A (en) * 1990-04-02 1991-12-03 Regents Of The University Of Minnesota Direct smelting process and apparatus
WO2004000777A1 (en) * 2002-06-25 2003-12-31 Institut Kataliza Imeni G.K. Boreskova Sibirskogo Otdeleniya Rossiiskoi Akademii Nauk Method for producing carbonyl compounds from di- and polyene cyclic hydrocarbons and the derivatives thereof
WO2005118890A2 (en) * 2004-05-29 2005-12-15 Noel Warner Recovery of steel from contaminated scrap

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
Mineral processing and extractive metallurgy, Vol. 112, December 2003, pages 141-154. *
NA Warner, "AISTech. Iron and Steel Technology Conference Proceedings", Vol. 2, 2004, pages 419-431. *

Also Published As

Publication number Publication date
WO2006092549A2 (en) 2006-09-08
GB0718926D0 (en) 2007-11-07
AU2006219757A1 (en) 2006-09-08
GB0504260D0 (en) 2005-04-06
WO2006092549A3 (en) 2006-12-21
GB2438570B (en) 2011-01-26

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20150131