JPS5352294A - Production of a-type hemihydrate gypsum - Google Patents

Production of a-type hemihydrate gypsum

Info

Publication number
JPS5352294A
JPS5352294A JP12758876A JP12758876A JPS5352294A JP S5352294 A JPS5352294 A JP S5352294A JP 12758876 A JP12758876 A JP 12758876A JP 12758876 A JP12758876 A JP 12758876A JP S5352294 A JPS5352294 A JP S5352294A
Authority
JP
Japan
Prior art keywords
hemihydrate gypsum
production
type hemihydrate
compounds
type
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.)
Granted
Application number
JP12758876A
Other languages
Japanese (ja)
Other versions
JPS5431996B2 (en
Inventor
Norikazu Akazawa
Kenichi Nishimura
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.)
Taki Chemical Co Ltd
Original Assignee
Taki Chemical 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 Taki Chemical Co Ltd filed Critical Taki Chemical Co Ltd
Priority to JP12758876A priority Critical patent/JPS5352294A/en
Publication of JPS5352294A publication Critical patent/JPS5352294A/en
Publication of JPS5431996B2 publication Critical patent/JPS5431996B2/ja
Granted 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
    • C01F11/466—Conversion of one form of calcium sulfate to another

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Inorganic Chemistry (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)

Abstract

PURPOSE: To produce α-type hemihydrate gypsum cheaply by reacting water-soluble sulfate with calcium compounds in a specific concentration of aq. soln. contg. COO--giving compounds and amines or ammonium compounds.
COPYRIGHT: (C)1978,JPO&Japio
JP12758876A 1976-10-22 1976-10-22 Production of a-type hemihydrate gypsum Granted JPS5352294A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12758876A JPS5352294A (en) 1976-10-22 1976-10-22 Production of a-type hemihydrate gypsum

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12758876A JPS5352294A (en) 1976-10-22 1976-10-22 Production of a-type hemihydrate gypsum

Publications (2)

Publication Number Publication Date
JPS5352294A true JPS5352294A (en) 1978-05-12
JPS5431996B2 JPS5431996B2 (en) 1979-10-11

Family

ID=14963775

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12758876A Granted JPS5352294A (en) 1976-10-22 1976-10-22 Production of a-type hemihydrate gypsum

Country Status (1)

Country Link
JP (1) JPS5352294A (en)

Also Published As

Publication number Publication date
JPS5431996B2 (en) 1979-10-11

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