JPS5384899A - Production of alpha-type hemihydrate gypsum - Google Patents

Production of alpha-type hemihydrate gypsum

Info

Publication number
JPS5384899A
JPS5384899A JP15899176A JP15899176A JPS5384899A JP S5384899 A JPS5384899 A JP S5384899A JP 15899176 A JP15899176 A JP 15899176A JP 15899176 A JP15899176 A JP 15899176A JP S5384899 A JPS5384899 A JP S5384899A
Authority
JP
Japan
Prior art keywords
type hemihydrate
gypsum
alpha
production
hemihydrate gypsum
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
JP15899176A
Other languages
Japanese (ja)
Other versions
JPS6026048B2 (en
Inventor
Moritsugu Imai
Hiroyuki Matsumura
Yujiro Fujisaki
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.)
Kawasaki Heavy Industries Ltd
Original Assignee
Kawasaki Heavy Industries 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 Kawasaki Heavy Industries Ltd filed Critical Kawasaki Heavy Industries Ltd
Priority to JP15899176A priority Critical patent/JPS6026048B2/en
Publication of JPS5384899A publication Critical patent/JPS5384899A/en
Publication of JPS6026048B2 publication Critical patent/JPS6026048B2/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

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 the title gypsum with good crystal form and high bulk dnesity by oxidizing a CaSO3 slurry with air at a temp. above the transition point of dihydrate gypsum to α-type hemihydrate one in the presence or absence of dihydrate gypsum and coexistence of MgSO3, MgSO4 and product α-type hemihydrate gypsum as seed crystals.
COPYRIGHT: (C)1978,JPO&Japio
JP15899176A 1976-12-30 1976-12-30 Production method of α-type hemihydrate gypsum Expired JPS6026048B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15899176A JPS6026048B2 (en) 1976-12-30 1976-12-30 Production method of α-type hemihydrate gypsum

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15899176A JPS6026048B2 (en) 1976-12-30 1976-12-30 Production method of α-type hemihydrate gypsum

Publications (2)

Publication Number Publication Date
JPS5384899A true JPS5384899A (en) 1978-07-26
JPS6026048B2 JPS6026048B2 (en) 1985-06-21

Family

ID=15683821

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15899176A Expired JPS6026048B2 (en) 1976-12-30 1976-12-30 Production method of α-type hemihydrate gypsum

Country Status (1)

Country Link
JP (1) JPS6026048B2 (en)

Also Published As

Publication number Publication date
JPS6026048B2 (en) 1985-06-21

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