GB980425A - Improvements in methods of, and apparatus for, the preparation of ferrous oxide - Google Patents

Improvements in methods of, and apparatus for, the preparation of ferrous oxide

Info

Publication number
GB980425A
GB980425A GB893961A GB893961A GB980425A GB 980425 A GB980425 A GB 980425A GB 893961 A GB893961 A GB 893961A GB 893961 A GB893961 A GB 893961A GB 980425 A GB980425 A GB 980425A
Authority
GB
United Kingdom
Prior art keywords
reducing
methane
air
gas stream
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.)
Expired
Application number
GB893961A
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.)
Renault SAS
Regie Nationale des Usines Renault
Original Assignee
Renault SAS
Regie Nationale des Usines Renault
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 Renault SAS, Regie Nationale des Usines Renault filed Critical Renault SAS
Publication of GB980425A publication Critical patent/GB980425A/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
    • C21B13/08—Making spongy iron or liquid steel, by direct processes in rotary furnaces
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G49/00—Compounds of iron
    • C01G49/02—Oxides; Hydroxides
    • C01G49/04—Ferrous oxide [FeO]
    • 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

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

Abstract

<PICT:0980425/C1/1> Ferrous oxide is prepared from ores of higher oxides of iron by reacting a methane-rich gas (i.e. containing at least 25% methane) in a combustion zone with air in proportions for incomplete combustion to form a reducing gas stream, passing the reducing gas stream countercurrent to and in contact with an ore of higher oxides of iron in a reducing zone thereby reducing the ore to ferrous oxide, withdrawing the gaseous effluent from the reducing zone, dividing it into two approximately equal portions, burning one of the portions completely with air in recuperative heat exchange with the other portion and recycling and mixing the thus heated second portion with the reducing gas stream and/or with the methane-rich gas stream, so that the temperature within the combustion zone is approximately 1000 DEG C. As shown in Fig. 3, the iron is charged by a screw 2 from a hopper 3, to a gas-tight rotary furnace 1 having an axial burner supplied with a methane rich gas and air through tubes 10 and 11 respectively. The reduced ore is poured into a tank 4, containing hot water, through a submerged shoot 5, and a chain of buckets 7 or an endless apron removes the oxide and discharges it to a rotary screen 8 in which it dries instantaneously. The gas escaping from the furnace is divided into two substantially equal portions by valves 18 and 19. Air, supplied by fan 20 is added to one of the portions and the mixture burnt in the hearth of heat recuperator 21, the flames passing along tubes 26. The second portion is drawn in by fan 25 and forced through tubes 26 and thus heated to about 760 DEG C. This-hot gas is then sent into the peripheral sheath 12 of the burner.
GB893961A 1960-03-11 1961-03-10 Improvements in methods of, and apparatus for, the preparation of ferrous oxide Expired GB980425A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR821137A FR1259048A (en) 1960-03-11 1960-03-11 Method and device for the preparation of iron protoxide

Publications (1)

Publication Number Publication Date
GB980425A true GB980425A (en) 1965-01-13

Family

ID=8726956

Family Applications (1)

Application Number Title Priority Date Filing Date
GB893961A Expired GB980425A (en) 1960-03-11 1961-03-10 Improvements in methods of, and apparatus for, the preparation of ferrous oxide

Country Status (3)

Country Link
BE (1) BE601220A (en)
FR (1) FR1259048A (en)
GB (1) GB980425A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE419100B (en) * 1979-03-01 1981-07-13 Lindstroem O SET FOR REDUCING FINALLY DISTRIBUTED IRON OXIDE-CONTAINING MATERIAL
DE3208987A1 (en) * 1982-03-12 1983-10-27 Metallgesellschaft Ag, 6000 Frankfurt METHOD FOR REBURNING COMBUSTIBLE COMPONENTS IN EXHAUST GASES FROM TURNTUBES

Also Published As

Publication number Publication date
FR1259048A (en) 1961-04-21
BE601220A (en) 1961-07-03

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