GB469328A - Improvements in and relating to the treatment of iron ores for subsequent reduction - Google Patents

Improvements in and relating to the treatment of iron ores for subsequent reduction

Info

Publication number
GB469328A
GB469328A GB2081/36A GB208136A GB469328A GB 469328 A GB469328 A GB 469328A GB 2081/36 A GB2081/36 A GB 2081/36A GB 208136 A GB208136 A GB 208136A GB 469328 A GB469328 A GB 469328A
Authority
GB
United Kingdom
Prior art keywords
sintering
magnetic separation
heads
fuel
air supply
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
GB2081/36A
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.)
Brassert & Co
Original Assignee
Brassert & Co
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 Brassert & Co filed Critical Brassert & Co
Priority to GB2081/36A priority Critical patent/GB469328A/en
Publication of GB469328A publication Critical patent/GB469328A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B1/00—Preliminary treatment of ores or scrap
    • C22B1/14—Agglomerating; Briquetting; Binding; Granulating
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B1/00—Preliminary treatment of ores or scrap
    • C22B1/02—Roasting processes
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B1/00—Preliminary treatment of ores or scrap
    • C22B1/14—Agglomerating; Briquetting; Binding; Granulating
    • C22B1/16—Sintering; Agglomerating
    • C22B1/18—Sintering; Agglomerating in sinter pots

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Abstract

Iron ores are enriched by sintering on a downdraught sintering machine, the resulting nodules being reduced in size, as by tumbling or crushing, and the fines, which contain the major amount of impurities, being subjected to magnetic separation. The coarser ore is preferably fed without sintering to the blast furnace, together with the coarser particles resulting from the sintering and the heads from the magnetic separation. The middlings from the magnetic separation, and in some cases a part of the heads, may be returned with fresh ore to the sintering machine. In order to eliminate as far as possible the amount of non-magnetic iron oxide in the sintered product the sintering is done in a reducing atmosphere and the temperature is kept down to about, or preferably below, 1050 DEG C. The reducing atmosphere may be obtained by limiting the air supply, so that the oxygen is burned to carbon monoxide in the surface layer of the charge, which may contain a heavier percentage of fuel or consist of fuel only; alternatively blast-furnace or coke-oven gas burned with a limited air supply may be used. The reducing gas is preferably pre-heated.
GB2081/36A 1936-01-22 1936-01-22 Improvements in and relating to the treatment of iron ores for subsequent reduction Expired GB469328A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2081/36A GB469328A (en) 1936-01-22 1936-01-22 Improvements in and relating to the treatment of iron ores for subsequent reduction

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2081/36A GB469328A (en) 1936-01-22 1936-01-22 Improvements in and relating to the treatment of iron ores for subsequent reduction

Publications (1)

Publication Number Publication Date
GB469328A true GB469328A (en) 1937-07-22

Family

ID=9733238

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2081/36A Expired GB469328A (en) 1936-01-22 1936-01-22 Improvements in and relating to the treatment of iron ores for subsequent reduction

Country Status (1)

Country Link
GB (1) GB469328A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2147284A (en) * 1983-09-30 1985-05-09 Petroleo Brasileiro Sa Process for obtaining a high surface area magnetite concentrate

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2147284A (en) * 1983-09-30 1985-05-09 Petroleo Brasileiro Sa Process for obtaining a high surface area magnetite concentrate

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