GB1248687A - Stagewise fluidized roasting of materials containing arsenic and antimony as well as roastable sulfur - Google Patents

Stagewise fluidized roasting of materials containing arsenic and antimony as well as roastable sulfur

Info

Publication number
GB1248687A
GB1248687A GB1082569A GB1082569A GB1248687A GB 1248687 A GB1248687 A GB 1248687A GB 1082569 A GB1082569 A GB 1082569A GB 1082569 A GB1082569 A GB 1082569A GB 1248687 A GB1248687 A GB 1248687A
Authority
GB
United Kingdom
Prior art keywords
roasting
stagewise
particle size
stage
oxygen
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
GB1082569A
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.)
BASF SE
Original Assignee
BASF SE
Badische Anilin and Sodafabrik AG
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
Priority claimed from DE19681667404 external-priority patent/DE1667404A1/en
Application filed by BASF SE, Badische Anilin and Sodafabrik AG filed Critical BASF SE
Publication of GB1248687A publication Critical patent/GB1248687A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B17/00—Sulfur; Compounds thereof
    • C01B17/48—Sulfur dioxide; Sulfurous acid
    • C01B17/50—Preparation of sulfur dioxide
    • C01B17/52—Preparation of sulfur dioxide by roasting sulfides
    • 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
    • C22B1/10—Roasting processes in fluidised form

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Environmental & Geological Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

1,248,687. Roasting sulphidic ores. BADISCHE ANILIN & SODA-FABRIK A.G. 28 Feb., 1969 [1 March, 1968], No. 10825/69. Heading C1A. A process for the production of a gas containing sulphur dioxide consisting of the stagewise roasting of arsenic- and/or antimonycontaining sulphidic materials (e.g. iron pyrites) with a gas containing oxygen in a fluidized bed, wherein there is provided a separate supply of the oxygen containing gas for (and a separate withdrawal of the roaster gas from) the preroasting, and after roasting stages, is improved when using material having a particle size up to 100 microns (e.g. flotation concentrates) by reducing the throughput of both the material and the oxygen to the preroasting stage to 25-45% of that which would be used if material having a particle size up to 10 mm were used, the throughput to the after-roasting stage not being so reduced but the reduced output from the pre-roasting stage being supplemented by the use of an auxiliary pre-roasting furnace. Preferably conditions are a 30-40% reduction compared to material having a particle size of 6 mm. used. In the example ion pyrites are preroasted to FeS.3Fe 3 0 4 at 850-900‹ C. and after-roasted to Fe 2 O 3 at 750-800‹ C.
GB1082569A 1968-03-01 1969-02-28 Stagewise fluidized roasting of materials containing arsenic and antimony as well as roastable sulfur Expired GB1248687A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19681667404 DE1667404A1 (en) 1968-03-01 1968-03-01 Process for the production of gases containing sulfur dioxide by gradually roasting roastable sulfur in addition to arsenic and antimony-containing materials in fluidized beds

Publications (1)

Publication Number Publication Date
GB1248687A true GB1248687A (en) 1971-10-06

Family

ID=5685961

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1082569A Expired GB1248687A (en) 1968-03-01 1969-02-28 Stagewise fluidized roasting of materials containing arsenic and antimony as well as roastable sulfur

Country Status (9)

Country Link
AT (1) AT281068B (en)
BE (1) BE729120A (en)
BR (1) BR6906768D0 (en)
ES (1) ES364269A1 (en)
FR (1) FR2002981A1 (en)
GB (1) GB1248687A (en)
NL (1) NL6902932A (en)
NO (1) NO125349B (en)
SE (1) SE352870B (en)

Also Published As

Publication number Publication date
BE729120A (en) 1969-08-28
NO125349B (en) 1972-08-28
ES364269A1 (en) 1971-02-16
BR6906768D0 (en) 1973-01-04
AT281068B (en) 1970-05-11
NL6902932A (en) 1969-09-03
SE352870B (en) 1973-01-15
FR2002981A1 (en) 1969-11-07

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