GB1470916A - Catalyticoxidation of calcium sulphite - Google Patents

Catalyticoxidation of calcium sulphite

Info

Publication number
GB1470916A
GB1470916A GB602575A GB602575A GB1470916A GB 1470916 A GB1470916 A GB 1470916A GB 602575 A GB602575 A GB 602575A GB 602575 A GB602575 A GB 602575A GB 1470916 A GB1470916 A GB 1470916A
Authority
GB
United Kingdom
Prior art keywords
catalyticoxidation
caso
calcium sulphite
iron
salzgitter
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
GB602575A
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.)
Fels Werke Peine Salzgitter
Original Assignee
Fels Werke Peine Salzgitter
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 Fels Werke Peine Salzgitter filed Critical Fels Werke Peine Salzgitter
Priority to GB602575A priority Critical patent/GB1470916A/en
Publication of GB1470916A publication Critical patent/GB1470916A/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
    • C01F11/00—Compounds of calcium, strontium, or barium
    • C01F11/46—Sulfates
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B11/00—Calcium sulfate cements
    • C04B11/26—Calcium sulfate cements strating from chemical gypsum; starting from phosphogypsum or from waste, e.g. purification products of smoke
    • C04B11/262—Calcium sulfate cements strating from chemical gypsum; starting from phosphogypsum or from waste, e.g. purification products of smoke waste gypsum other than phosphogypsum

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Inorganic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Catalysts (AREA)

Abstract

1470916 Calcium sulphate hemihydrate FELS - WERKE PEINE - SALZGITTER GmbH 12 Feb 1975 6025/75 Heading C1A CaSO 3 is oxidized to alpha-CaSO 4 . ¢HO 2 using oxygen or air as the oxidizing agent using as catalyst an iron II or iron III sulphate (or mixture thereof); the oxidation is performed either hydrothermally at 100-180‹ C. or in CaCl 2 solution at #75‹ C., with suitable adjustment of the pH to ensure the presence of HSO 3 - ions.
GB602575A 1975-02-12 1975-02-12 Catalyticoxidation of calcium sulphite Expired GB1470916A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB602575A GB1470916A (en) 1975-02-12 1975-02-12 Catalyticoxidation of calcium sulphite

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB602575A GB1470916A (en) 1975-02-12 1975-02-12 Catalyticoxidation of calcium sulphite

Publications (1)

Publication Number Publication Date
GB1470916A true GB1470916A (en) 1977-04-21

Family

ID=9807054

Family Applications (1)

Application Number Title Priority Date Filing Date
GB602575A Expired GB1470916A (en) 1975-02-12 1975-02-12 Catalyticoxidation of calcium sulphite

Country Status (1)

Country Link
GB (1) GB1470916A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112442702A (en) * 2020-12-04 2021-03-05 鞍钢集团矿业有限公司 Electrochemical catalytic oxidation method for calcium sulfite in desulfurized fly ash

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112442702A (en) * 2020-12-04 2021-03-05 鞍钢集团矿业有限公司 Electrochemical catalytic oxidation method for calcium sulfite in desulfurized fly ash

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Legal Events

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