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JPS52114495A - Production of ii type anhydrous gypsum with high strength - Google Patents

Production of ii type anhydrous gypsum with high strength

Info

Publication number
JPS52114495A
JPS52114495A JP2985676A JP2985676A JPS52114495A JP S52114495 A JPS52114495 A JP S52114495A JP 2985676 A JP2985676 A JP 2985676A JP 2985676 A JP2985676 A JP 2985676A JP S52114495 A JPS52114495 A JP S52114495A
Authority
JP
Japan
Prior art keywords
production
anhydrous gypsum
high strength
type anhydrous
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.)
Pending
Application number
JP2985676A
Other languages
Japanese (ja)
Inventor
Tadaki Matsunaga
Yasumi Matsunaga
Satoru Fujii
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.)
Taiheiyo Cement Corp
Original Assignee
Onoda Cement 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 Onoda Cement Co Ltd filed Critical Onoda Cement Co Ltd
Priority to JP2985676A priority Critical patent/JPS52114495A/en
Publication of JPS52114495A publication Critical patent/JPS52114495A/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
    • 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)
  • Curing Cements, Concrete, And Artificial Stone (AREA)

Abstract

PURPOSE: To produce II type anhydrous gypsum from which a molded product with high hydraulicity and strength is obtianable, by kneading phosphoric acid by-product gypsum with a specific amount of mineral acids or acidic salts of mineral acids and burning the kneaded product.
COPYRIGHT: (C)1977,JPO&Japio
JP2985676A 1976-03-22 1976-03-22 Production of ii type anhydrous gypsum with high strength Pending JPS52114495A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2985676A JPS52114495A (en) 1976-03-22 1976-03-22 Production of ii type anhydrous gypsum with high strength

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2985676A JPS52114495A (en) 1976-03-22 1976-03-22 Production of ii type anhydrous gypsum with high strength

Publications (1)

Publication Number Publication Date
JPS52114495A true JPS52114495A (en) 1977-09-26

Family

ID=12287598

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2985676A Pending JPS52114495A (en) 1976-03-22 1976-03-22 Production of ii type anhydrous gypsum with high strength

Country Status (1)

Country Link
JP (1) JPS52114495A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2470401A (en) * 2009-05-22 2010-11-24 Bpb Ltd Calcium sulphate-based products having enhanced water resistance

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2470401A (en) * 2009-05-22 2010-11-24 Bpb Ltd Calcium sulphate-based products having enhanced water resistance
WO2010133898A1 (en) 2009-05-22 2010-11-25 Bpb Limited Calcium sulphate-based products having enhanced water resistance
US9127166B2 (en) 2009-05-22 2015-09-08 Bpb Limited Calcium sulphate-based products having enhanced water resistance

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