CA3077613C - Procede de reduction directe de chromite avec un additif cryolite - Google Patents

Procede de reduction directe de chromite avec un additif cryolite Download PDF

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Publication number
CA3077613C
CA3077613C CA3077613A CA3077613A CA3077613C CA 3077613 C CA3077613 C CA 3077613C CA 3077613 A CA3077613 A CA 3077613A CA 3077613 A CA3077613 A CA 3077613A CA 3077613 C CA3077613 C CA 3077613C
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Canada
Prior art keywords
chromite
cryolite
mixture
particles
reduction
Prior art date
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Active
Application number
CA3077613A
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English (en)
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CA3077613A1 (fr
Inventor
Samira SOKHANVARAN
Dogan PAKTUNC
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Canada Minister of Natural Resources
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Canada Minister of Natural Resources
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Publication of CA3077613A1 publication Critical patent/CA3077613A1/fr
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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
    • C22B34/00—Obtaining refractory metals
    • C22B34/30—Obtaining chromium, molybdenum or tungsten
    • C22B34/32—Obtaining chromium
    • 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
    • C22B5/00—General methods of reducing to metals
    • C22B5/02—Dry methods smelting of sulfides or formation of mattes
    • C22B5/10—Dry methods smelting of sulfides or formation of mattes by solid carbonaceous reducing agents
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C35/00—Master alloys for iron or steel
    • C22C35/005—Master alloys for iron or steel based on iron, e.g. ferro-alloys

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

Abstract

L'invention concerne un procédé de réduction de chromite à l'aide de cryolite (Na3Al F6) comme additif. La cryolite utilisée peut être de la cryolite pure, ou un mélange impur contenant de la cryolite, comme par exemple le matériau de bain produit en tant que déchet ou sous-produit de procédés de fusion d'aluminium. Dans un mode de réalisation, le produit de réduction est refondu à une température plus élevée pour former des particules métalliques plus grosses. Dans un autre mode de réalisation, le minerai de chromite est granulé avec des particules de cryolite et des particules d'agent réducteur au carbone avant d'être réduit.
CA3077613A 2017-10-20 2017-10-20 Procede de reduction directe de chromite avec un additif cryolite Active CA3077613C (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CA2017/051252 WO2019075545A1 (fr) 2017-10-20 2017-10-20 Procédé de réduction directe de chromite avec un additif cryolite

Publications (2)

Publication Number Publication Date
CA3077613A1 CA3077613A1 (fr) 2019-04-25
CA3077613C true CA3077613C (fr) 2021-02-02

Family

ID=66173109

Family Applications (1)

Application Number Title Priority Date Filing Date
CA3077613A Active CA3077613C (fr) 2017-10-20 2017-10-20 Procede de reduction directe de chromite avec un additif cryolite

Country Status (2)

Country Link
CA (1) CA3077613C (fr)
WO (1) WO2019075545A1 (fr)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US869681A (en) * 1906-10-31 1907-10-29 Ferro Alloys Syndicate Ltd Manufacture of ferrochromium.
US2049081A (en) * 1922-02-23 1936-07-28 Robert Wickersham Stimson Alloys
US1871723A (en) * 1929-05-29 1932-08-16 Aluminum Co Of America Process for the recovery of cryolite
ZA875774B (en) * 1986-08-07 1988-04-27 Mineral Tech Council Process for the enhanced reduction of chromite ores

Also Published As

Publication number Publication date
WO2019075545A1 (fr) 2019-04-25
CA3077613A1 (fr) 2019-04-25

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