GB1352978A - Method for the alkali oxidising roasting of chrome ore - Google Patents

Method for the alkali oxidising roasting of chrome ore

Info

Publication number
GB1352978A
GB1352978A GB1008372A GB1008372A GB1352978A GB 1352978 A GB1352978 A GB 1352978A GB 1008372 A GB1008372 A GB 1008372A GB 1008372 A GB1008372 A GB 1008372A GB 1352978 A GB1352978 A GB 1352978A
Authority
GB
United Kingdom
Prior art keywords
kiln
alkali
chrome ore
roasting
fuel
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
GB1008372A
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.)
Nippon Denko Co Ltd
Original Assignee
Nippon Denko Co Ltd
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 Nippon Denko Co Ltd filed Critical Nippon Denko Co Ltd
Publication of GB1352978A publication Critical patent/GB1352978A/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
    • C22B1/02—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
    • 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)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Muffle Furnaces And Rotary Kilns (AREA)

Abstract

1352978 Roasting chrome ore NIPPON DENKO CO Ltd 3 March 1972 [22 Sept 1971] 10083/72 Heading C1A [Also in Division F4] Alkali chromates are prepared by alkali oxidizing roasting of chrome ore in a rotary kiln wherein the oxidizing gas, having an elevated temp. and comprising a fuel and excess air, is introduced both into one end and into an intermediate region of the kiln. The oxidizing gas may be introduced into an elongated rotary counter-current kiln 1 by means of a main burner 2 and sub-burners projecting into the kiln at 6 and 6<SP>1</SP>, thereby maintaining the temp. at 1000-1200‹ C. in the lower half of the kiln. The fuel may be heavy oil.
GB1008372A 1971-09-22 1972-03-03 Method for the alkali oxidising roasting of chrome ore Expired GB1352978A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7345671A JPS4838817A (en) 1971-09-22 1971-09-22

Publications (1)

Publication Number Publication Date
GB1352978A true GB1352978A (en) 1974-05-15

Family

ID=13518748

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1008372A Expired GB1352978A (en) 1971-09-22 1972-03-03 Method for the alkali oxidising roasting of chrome ore

Country Status (5)

Country Link
JP (1) JPS4838817A (en)
DE (1) DE2209384A1 (en)
FR (1) FR2153223B1 (en)
GB (1) GB1352978A (en)
IT (1) IT948730B (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2404172A1 (en) * 1977-09-26 1979-04-20 Zink Co John SECONDARY BURNER DEVICE TO REDUCE THE PROPORTION OF NITROGEN OXIDES FORMED DURING THE COMBUSTION OF A LIQUID OR GASEOUS FUEL ON A MAIN BURNER
GB2282369A (en) * 1993-09-30 1995-04-05 Bayer Ag Method for manufacturing alkali chromates from chromium ore
GB2282368A (en) * 1993-09-30 1995-04-05 Bayer Ag Method for manufacturing alkali chromates from chromium ore by two stage oxidation
US8034319B2 (en) 2003-05-30 2011-10-11 Jfe Mineral Co., Ltd. Method for producing complex oxide of metal
CN112661186A (en) * 2020-12-25 2021-04-16 四川省绵阳市华意达化工有限公司 Method for bottom blowing oxygen-enriched low-alkali roasting of chromite

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5034343Y2 (en) * 1971-06-18 1975-10-06

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2404172A1 (en) * 1977-09-26 1979-04-20 Zink Co John SECONDARY BURNER DEVICE TO REDUCE THE PROPORTION OF NITROGEN OXIDES FORMED DURING THE COMBUSTION OF A LIQUID OR GASEOUS FUEL ON A MAIN BURNER
GB2282369A (en) * 1993-09-30 1995-04-05 Bayer Ag Method for manufacturing alkali chromates from chromium ore
GB2282368A (en) * 1993-09-30 1995-04-05 Bayer Ag Method for manufacturing alkali chromates from chromium ore by two stage oxidation
DE4333349A1 (en) * 1993-09-30 1995-04-06 Bayer Ag Process for the production of alkali chromates from chrome ore
US5505918A (en) * 1993-09-30 1996-04-09 Bayer Aktiengesellschaft Method for manufacturing alkali chromates from chromium ore
US5667759A (en) * 1993-09-30 1997-09-16 Bayer Aktiengesellschaft Method for manufacturing alkali chromates from chromium ore
DE4333349C2 (en) * 1993-09-30 1999-03-11 Bayer Ag Process for the production of alkali chromates from chrome ore
US8034319B2 (en) 2003-05-30 2011-10-11 Jfe Mineral Co., Ltd. Method for producing complex oxide of metal
CN112661186A (en) * 2020-12-25 2021-04-16 四川省绵阳市华意达化工有限公司 Method for bottom blowing oxygen-enriched low-alkali roasting of chromite

Also Published As

Publication number Publication date
FR2153223B1 (en) 1977-06-17
FR2153223A1 (en) 1973-05-04
IT948730B (en) 1973-06-11
DE2209384A1 (en) 1973-03-29
JPS4838817A (en) 1973-06-07

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Legal Events

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