JPS5289598A - Production of a-type hemihydrate gypsum from phosphoric acid by-produc t gypsum - Google Patents

Production of a-type hemihydrate gypsum from phosphoric acid by-produc t gypsum

Info

Publication number
JPS5289598A
JPS5289598A JP259976A JP259976A JPS5289598A JP S5289598 A JPS5289598 A JP S5289598A JP 259976 A JP259976 A JP 259976A JP 259976 A JP259976 A JP 259976A JP S5289598 A JPS5289598 A JP S5289598A
Authority
JP
Japan
Prior art keywords
gypsum
phosphoric acid
produc
production
type hemihydrate
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.)
Pending
Application number
JP259976A
Other languages
Japanese (ja)
Inventor
Yukio Takigawa
Toshinori Tsutsumi
Yoshio Kanemasa
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.)
Mitsubishi Kasei Corp
Original Assignee
Mitsubishi Kasei Corp
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 Mitsubishi Kasei Corp filed Critical Mitsubishi Kasei Corp
Priority to JP259976A priority Critical patent/JPS5289598A/en
Publication of JPS5289598A publication Critical patent/JPS5289598A/en
Pending 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 enable to easily obtain α-type hemihydrate gypsum even when mother liquor is repeatedly used, by heat treatment of slurry of phosphoric acid byproduct gypsum and water whose pH has been adjusted within a specific range by adding caustic alkali.
COPYRIGHT: (C)1977,JPO&Japio
JP259976A 1976-01-12 1976-01-12 Production of a-type hemihydrate gypsum from phosphoric acid by-produc t gypsum Pending JPS5289598A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP259976A JPS5289598A (en) 1976-01-12 1976-01-12 Production of a-type hemihydrate gypsum from phosphoric acid by-produc t gypsum

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP259976A JPS5289598A (en) 1976-01-12 1976-01-12 Production of a-type hemihydrate gypsum from phosphoric acid by-produc t gypsum

Publications (1)

Publication Number Publication Date
JPS5289598A true JPS5289598A (en) 1977-07-27

Family

ID=11533840

Family Applications (1)

Application Number Title Priority Date Filing Date
JP259976A Pending JPS5289598A (en) 1976-01-12 1976-01-12 Production of a-type hemihydrate gypsum from phosphoric acid by-produc t gypsum

Country Status (1)

Country Link
JP (1) JPS5289598A (en)

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