GB1443202A - Method of extrcting chromium from chromium ores - Google Patents

Method of extrcting chromium from chromium ores

Info

Publication number
GB1443202A
GB1443202A GB2761673A GB2761673A GB1443202A GB 1443202 A GB1443202 A GB 1443202A GB 2761673 A GB2761673 A GB 2761673A GB 2761673 A GB2761673 A GB 2761673A GB 1443202 A GB1443202 A GB 1443202A
Authority
GB
United Kingdom
Prior art keywords
chromium
chromate
ore
june
ores
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
GB2761673A
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.)
Produits Chimiques Ugine Kuhlmann
Ugine Kuhlmann SA
Original Assignee
Produits Chimiques Ugine Kuhlmann
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 Produits Chimiques Ugine Kuhlmann, Ugine Kuhlmann SA filed Critical Produits Chimiques Ugine Kuhlmann
Publication of GB1443202A publication Critical patent/GB1443202A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G37/00—Compounds of chromium
    • C01G37/14—Chromates; Bichromates
    • 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

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

Abstract

1443202 Extracting chromium from chromium ores PRODUITS CHIMIQUES UGINE KUHLMANN 11 June 1973 [14 June 1972] 27616/73 Heading C1A Extraction of chromium as a chromate from a chromium ore is carried out by a method wherein particles of chromium ore having a mean dimension of less than 250 Á (as defined) are maintained suspended in a bath of molten salts into which an oxygen containing gas is injected. Preferred molten salts are those of sodium chromate, Na 2 CO 3 and Na 2 SO 4 or eutectic mixtures of same, the ore to salt ratio being in the range 1 to 5-20. Reaction temperatures of 800-900‹ C. are used with or without a catalyst which can be iron or manganese oxides. Recovery of the resulting chromate is effected either by leaching the product with water or by decanting the molten product to remove insoluble impurities and then allowing the chromate to crystallize by cooling.
GB2761673A 1972-06-14 1973-06-11 Method of extrcting chromium from chromium ores Expired GB1443202A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7221356A FR2187929B1 (en) 1972-06-14 1972-06-14

Publications (1)

Publication Number Publication Date
GB1443202A true GB1443202A (en) 1976-07-21

Family

ID=9100180

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2761673A Expired GB1443202A (en) 1972-06-14 1973-06-11 Method of extrcting chromium from chromium ores

Country Status (11)

Country Link
JP (1) JPS5313570B2 (en)
AR (1) AR195005A1 (en)
BR (1) BR7304460D0 (en)
DE (1) DE2329925B2 (en)
ES (1) ES415808A1 (en)
FR (1) FR2187929B1 (en)
GB (1) GB1443202A (en)
IN (1) IN141955B (en)
IT (1) IT991626B (en)
RO (1) RO62807A (en)
ZA (1) ZA733774B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS504388U (en) * 1973-05-07 1975-01-17
JPS52150316A (en) * 1976-06-10 1977-12-14 Asahi Chem Ind Co Ltd Treatment of water containing chromium ion and recovery of chromium
JPS5357112A (en) * 1976-11-02 1978-05-24 Nakamichi Yamazaki Metallurgy of chronium
JPS5547153A (en) * 1978-08-14 1980-04-03 Honda Motor Co Ltd Automatic control system of riceecleaning device

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE171089C (en) *
GB103696A (en) * 1916-02-09 1917-02-08 Gerhard Nicolaas Improvements in the Manufacture of Chromates.

Also Published As

Publication number Publication date
FR2187929B1 (en) 1975-03-28
IT991626B (en) 1975-08-30
ES415808A1 (en) 1976-02-01
JPS5313570B2 (en) 1978-05-11
AR195005A1 (en) 1973-08-30
BR7304460D0 (en) 1974-08-15
IN141955B (en) 1977-05-14
FR2187929A1 (en) 1974-01-18
RO62807A (en) 1977-08-15
JPS4931514A (en) 1974-03-22
ZA733774B (en) 1974-11-27
DE2329925A1 (en) 1974-01-03
DE2329925B2 (en) 1974-05-02

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee