GB927309A - Improvements í¡í¡ to the reduction of iron ores - Google Patents

Improvements í¡í¡ to the reduction of iron ores

Info

Publication number
GB927309A
GB927309A GB7674/60A GB767462A GB927309A GB 927309 A GB927309 A GB 927309A GB 7674/60 A GB7674/60 A GB 7674/60A GB 767462 A GB767462 A GB 767462A GB 927309 A GB927309 A GB 927309A
Authority
GB
United Kingdom
Prior art keywords
reduction
partially
stage
bath
oxygen
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
GB7674/60A
Inventor
Claude Clement
Francois Eschard
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.)
IFP Energies Nouvelles IFPEN
Original Assignee
IFP Energies Nouvelles IFPEN
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 IFP Energies Nouvelles IFPEN filed Critical IFP Energies Nouvelles IFPEN
Publication of GB927309A publication Critical patent/GB927309A/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
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B11/00—Making pig-iron other than in blast 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
    • 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
    • C21B2100/28—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
    • C21B2100/60—Process control or energy utilisation in the manufacture of iron or steel
    • C21B2100/66—Heat exchange
    • 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)
  • Manufacture And Refinement Of Metals (AREA)
  • Laminated Bodies (AREA)

Abstract

In a continuous process for the production of carburized iron, the ore is first treated, at a temperature below that at which sintering occurs and for such time that reduction is 70-98% complete, with a reducing gas containing a major proportion of carbon monoxide and hydrogen, the reducing gas being drawn at least partially from the final stage of the process. The partially reduced ore is then charged below the surface of a bath of carburized iron, oxygen-containing gas also being charged below the surface, the amount of oxygen being such that a minimum quantity of carbon dioxide is liberated. The bath may be recarburized by blowing in cracked methane or natural gas, or the initial reduction stage may be carried out under such conditions that solid carbon is deposited on the partially reduced ore. The partially oxidized gases leaving the first stage reduction may be burnt for use in heat-exchangers or may be freed of carbon dioxide and steam and recirculated.
GB7674/60A 1961-02-27 1962-02-27 Improvements í¡í¡ to the reduction of iron ores Expired GB927309A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR854184A FR1414716A (en) 1961-02-27 1961-02-27 New continuous process for reducing iron ore

Publications (1)

Publication Number Publication Date
GB927309A true GB927309A (en) 1963-05-29

Family

ID=8749855

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7674/60A Expired GB927309A (en) 1961-02-27 1962-02-27 Improvements í¡í¡ to the reduction of iron ores

Country Status (5)

Country Link
DE (1) DE1266330B (en)
ES (1) ES274939A1 (en)
FR (1) FR1414716A (en)
GB (1) GB927309A (en)
OA (1) OA01617A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4007034A (en) * 1974-05-22 1977-02-08 Fried. Krupp Gesellschaft Mit Beschrankter Haftung Method for making steel
US4874427A (en) * 1981-04-28 1989-10-17 Kawasaki Steel Corporation Methods for melting and refining a powdery ore containing metal oxides

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD100017A5 (en) * 1971-11-01 1973-09-05
DE2401909C3 (en) * 1974-01-16 1985-06-27 Fried. Krupp Gmbh, 4300 Essen Process for the production of steel

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2750277A (en) * 1951-05-14 1956-06-12 Armco Steel Corp Process and apparatus for reducing and smelting iron

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4007034A (en) * 1974-05-22 1977-02-08 Fried. Krupp Gesellschaft Mit Beschrankter Haftung Method for making steel
US4874427A (en) * 1981-04-28 1989-10-17 Kawasaki Steel Corporation Methods for melting and refining a powdery ore containing metal oxides

Also Published As

Publication number Publication date
FR1414716A (en) 1965-10-22
ES274939A1 (en) 1962-10-01
DE1266330B (en) 1968-04-18
OA01617A (en) 1969-09-20

Similar Documents

Publication Publication Date Title
ES315686A1 (en) Procedure for the reduction of artificial balls of beneficiated iron mineral. (Machine-translation by Google Translate, not legally binding)
ES471894A1 (en) Method for processing coke oven gas
GB1308212A (en) Decarburizing molten steel
GB927309A (en) Improvements í¡í¡ to the reduction of iron ores
GB1048917A (en) Oxide reduction process
GB799551A (en) Reduction of a metal oxide with carbon monoxide and hydrogen
ES483580A1 (en) Apparatus for treating gases produced from coal
GB858561A (en) Reduction of metal oxides
GB978759A (en) Method of producing iron in a blast furnace
GB1032423A (en) Improvements in or relating to a process for the production of steel
GB939377A (en) Process for the production of cast iron or steel
GB980864A (en) Improved process for the beneficiation of ores
GB882630A (en) Process and apparatus for recovering and processing iron containing substances from gas escaping when blowing oxygen or oxygen containing gas into or on to a bath of molten iron
GB776602A (en) Process for the recovery of tin or tin dioxide from materials containing tin in an oxidic form
GB945312A (en) Method of producing pig iron or ferrous alloys in a blast furnace
GB768909A (en) Improvements in or relating to reducing the sulfur content of coke containing a high percentage of sulfur
GB674546A (en) Process for the simultaneous production of metals and rich gas
GB902101A (en) Treatment of molten ferrous metal
GB1089060A (en) Process for recovery of iron from ore
GB1067805A (en) Method for the preparation of iron or steel from ores
GB851054A (en) Process of reducing the hydrogen content while increasing the net calorific value of a gas containing hydrogen
GB858404A (en) A method of lowering the carbon content of chromium-bearing steels
GB830008A (en) Method of treating ore fines and product thereof
GB747208A (en) Improvements in or relating to method of lowering the carbon content of high carbon ferrochromium
GB915637A (en) Improvements in or relating to the refining of steel