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FR2168170A1 - Reducing chrome ore - agglomerated with carbon - Google Patents

Reducing chrome ore - agglomerated with carbon

Info

Publication number
FR2168170A1
FR2168170A1 FR7201724A FR7201724A FR2168170A1 FR 2168170 A1 FR2168170 A1 FR 2168170A1 FR 7201724 A FR7201724 A FR 7201724A FR 7201724 A FR7201724 A FR 7201724A FR 2168170 A1 FR2168170 A1 FR 2168170A1
Authority
FR
France
Prior art keywords
agglomerates
degrees
reducing
agglomerated
carbon
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
FR7201724A
Other languages
French (fr)
Other versions
FR2168170B1 (en
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.)
Pechiney SA
Original Assignee
Pechiney Ugine Kuhlmann SA
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 Pechiney Ugine Kuhlmann SA filed Critical Pechiney Ugine Kuhlmann SA
Priority to FR7201724A priority Critical patent/FR2168170A1/en
Publication of FR2168170A1 publication Critical patent/FR2168170A1/en
Application granted granted Critical
Publication of FR2168170B1 publication Critical patent/FR2168170B1/fr
Granted 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
    • C22B34/00—Obtaining refractory metals
    • C22B34/30—Obtaining chromium, molybdenum or tungsten
    • C22B34/32—Obtaining chromium

Landscapes

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

Abstract

A process of reducing an ore by agglomerating the powdered ore with a solid C reductor by means of a binder, prereducing the agglomerates in a rotating furnace, and finally reducing in an electric furnace, in which the proportions of oxides of Fe and Cr in the initial agglomerates is such that Cr/Fe wt. ratio is 3, and the heating of the agglomerates by gases from the prereduction zone is relatively slow up to 900 degrees C, then rapid to 900-1200 degrees C, and in a second reduction zone the temp. is raised to 1400 degrees C. Prevents the agglomerates from disintegrating or crumbling during treatment.
FR7201724A 1972-01-19 1972-01-19 Reducing chrome ore - agglomerated with carbon Granted FR2168170A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7201724A FR2168170A1 (en) 1972-01-19 1972-01-19 Reducing chrome ore - agglomerated with carbon

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7201724A FR2168170A1 (en) 1972-01-19 1972-01-19 Reducing chrome ore - agglomerated with carbon

Publications (2)

Publication Number Publication Date
FR2168170A1 true FR2168170A1 (en) 1973-08-31
FR2168170B1 FR2168170B1 (en) 1974-06-21

Family

ID=9092109

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7201724A Granted FR2168170A1 (en) 1972-01-19 1972-01-19 Reducing chrome ore - agglomerated with carbon

Country Status (1)

Country Link
FR (1) FR2168170A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0365680B1 (en) * 1988-03-14 1994-02-09 Showa Denko Kabushiki Kaisha A method for producing a reduced chromium-ore bearing powder

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1040443A (en) * 1962-05-02 1966-08-24 Nat Res Dev Treatment of chromite

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1040443A (en) * 1962-05-02 1966-08-24 Nat Res Dev Treatment of chromite

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0365680B1 (en) * 1988-03-14 1994-02-09 Showa Denko Kabushiki Kaisha A method for producing a reduced chromium-ore bearing powder

Also Published As

Publication number Publication date
FR2168170B1 (en) 1974-06-21

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Legal Events

Date Code Title Description
TP Transmission of property
CD Change of name or company name
ST Notification of lapse