GB1484811A - Process for the thermal splitting of metal sulphates - Google Patents

Process for the thermal splitting of metal sulphates

Info

Publication number
GB1484811A
GB1484811A GB159475A GB159475A GB1484811A GB 1484811 A GB1484811 A GB 1484811A GB 159475 A GB159475 A GB 159475A GB 159475 A GB159475 A GB 159475A GB 1484811 A GB1484811 A GB 1484811A
Authority
GB
United Kingdom
Prior art keywords
sulphates
metal oxide
sulphate
sulphur dioxide
metal
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
GB159475A
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.)
GEA Group AG
Original Assignee
Metallgesellschaft 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
Application filed by Metallgesellschaft AG filed Critical Metallgesellschaft AG
Publication of GB1484811A publication Critical patent/GB1484811A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
    • C01F7/00—Compounds of aluminium
    • C01F7/02—Aluminium oxide; Aluminium hydroxide; Aluminates
    • C01F7/30—Preparation of aluminium oxide or hydroxide by thermal decomposition or by hydrolysis or oxidation of aluminium compounds
    • C01F7/32—Thermal decomposition of sulfates including complex sulfates, e.g. alums
    • 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
    • C01B17/58—Recovery of sulfur dioxide from acid tar or the like or from any waste sulfuric acid

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)
  • Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Abstract

1484811 Metal oxides and sulphur dioxide from sulphates METALLGESELLSCHAFT AG 14 Jan 1975 [17 Jan 1974] 1594/75 Heading C1A Metal sulphates are split into the metal oxide and sulphur dioxide in a fluidized bed of metal oxide which is kept at a temperature above the splitting temperature of the sulphate but below the sinter temperature of the metal oxide produced, the sulphate is supplied in a molten, solution, solid or suspended form below the surface of the fluidized bed which has a height when stationary of from 300 to 800 mm. and wherein the speed of the fluidizing gas with respect to the cross-section of the reactor is adjusted to a value W G where where W G is the speed of the gas in metres per second and # is the density of the metal oxide of the bed in grams per c.c. The sulphate may be present in a salt-containing waste acid; iron and aluminium sulphates in sulphuric acid are exemplified. The sulphur dioxide produced may be reconverted into sulphuric acid free from salt contaminants. Mention is made of the treatment of sulphates of nickel, cobalt, magnesium, manganese and chromium; the treatment of mixtures of sulphates is stated as producing mixed oxides.
GB159475A 1974-01-17 1975-01-14 Process for the thermal splitting of metal sulphates Expired GB1484811A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19742402038 DE2402038A1 (en) 1974-01-17 1974-01-17 PROCESS FOR THE THERMAL CLEARANCE OF METAL SULPHATES

Publications (1)

Publication Number Publication Date
GB1484811A true GB1484811A (en) 1977-09-08

Family

ID=5904957

Family Applications (1)

Application Number Title Priority Date Filing Date
GB159475A Expired GB1484811A (en) 1974-01-17 1975-01-14 Process for the thermal splitting of metal sulphates

Country Status (4)

Country Link
DE (1) DE2402038A1 (en)
FR (1) FR2258344A1 (en)
GB (1) GB1484811A (en)
NL (1) NL7415972A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007057504A1 (en) * 2005-11-18 2007-05-24 Outotec Oyj. Method for decomposing metal sulphate

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2710978A1 (en) * 1977-03-12 1978-09-21 Metallgesellschaft Ag METHOD FOR THERMAL CLEAVING OF PRIMARY SALTS CONTAINING IRON SULFATE

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007057504A1 (en) * 2005-11-18 2007-05-24 Outotec Oyj. Method for decomposing metal sulphate
EA014826B1 (en) * 2005-11-18 2011-02-28 Ототек Оюй Method for decomposing metal sulphate
AU2006314404B2 (en) * 2005-11-18 2012-04-19 Outotec Oyj Method for decomposing metal sulphate

Also Published As

Publication number Publication date
FR2258344A1 (en) 1975-08-18
DE2402038A1 (en) 1975-07-31
NL7415972A (en) 1975-07-21

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Legal Events

Date Code Title Description
CSNS Application of which complete specification have been accepted and published, but patent is not sealed