DK131772B - Process for the production of alpha-semi-hydrate gypsum. - Google Patents

Process for the production of alpha-semi-hydrate gypsum.

Info

Publication number
DK131772B
DK131772B DK288669A DK288669A DK131772B DK 131772 B DK131772 B DK 131772B DK 288669 A DK288669 A DK 288669A DK 288669 A DK288669 A DK 288669A DK 131772 B DK131772 B DK 131772B
Authority
DK
Denmark
Prior art keywords
alpha
semi
production
hydrate gypsum
gypsum
Prior art date
Application number
DK288669A
Other languages
Danish (da)
Other versions
DK131772C (en
Inventor
G W Cafferata
Original Assignee
Bpb 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 Bpb Industries Ltd filed Critical Bpb Industries Ltd
Publication of DK131772B publication Critical patent/DK131772B/en
Application granted granted Critical
Publication of DK131772C publication Critical patent/DK131772C/en

Links

Classifications

    • 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
    • C04B11/02—Methods and apparatus for dehydrating gypsum
    • C04B11/024—Ingredients added before, or during, the calcining process, e.g. calcination modifiers

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
DK288669A 1968-05-28 1969-05-28 PROCEDURE FOR MANUFACTURE OF ALFA SEMIHYDRATE PLASTER DK131772C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2549568A GB1262083A (en) 1968-05-28 1968-05-28 alpha-CALCIUM SULPHATE HEMIHYDRATE

Publications (2)

Publication Number Publication Date
DK131772B true DK131772B (en) 1975-09-01
DK131772C DK131772C (en) 1976-02-02

Family

ID=10228621

Family Applications (1)

Application Number Title Priority Date Filing Date
DK288669A DK131772C (en) 1968-05-28 1969-05-28 PROCEDURE FOR MANUFACTURE OF ALFA SEMIHYDRATE PLASTER

Country Status (10)

Country Link
BE (1) BE733737A (en)
DE (1) DE1927015B2 (en)
DK (1) DK131772C (en)
FR (1) FR1599625A (en)
GB (1) GB1262083A (en)
IE (1) IE32810B1 (en)
LU (1) LU58733A1 (en)
NL (1) NL6908130A (en)
NO (1) NO124990B (en)
SE (1) SE366531B (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1547424A (en) * 1975-03-31 1979-06-20 Japan Government Method of producing needlelike 11-anhydrite gypsum
DE3222865C2 (en) * 1981-07-10 1992-10-22 Steag Ag, 4300 Essen Method for granulating plaster of paris produced in chemical processes and using a compacting device for granulating plaster of paris according to the method
DE3502637A1 (en) * 1985-01-26 1986-09-11 Frank W. Dr.-Ing. 6600 Saarbrücken Fink Process for calcining lumpy flue gas desulphurisation gypsum by steam action
DE3711367A1 (en) * 1987-04-04 1988-10-13 Rwk Rhein Westfael Kalkwerke Process for preparing calcium sulphate hemihydrate
DE3844938C2 (en) * 1987-05-22 1996-09-19 Pro Mineral Ges Calcium sulphate alpha-mono:hydrate mfr. by autoclaving di:hydrate
DE3816513C3 (en) * 1987-05-22 1998-10-01 Pro Mineral Ges Process for producing calcium sulfate alpha hemihydrate from finely divided calcium sulfate and its use
DE4217978A1 (en) * 1992-05-30 1993-12-02 Heidelberger Zement Ag Process for the production of ALPHA hemihydrate from calcium sulfate dihydrate in a reactor
RS58239B1 (en) * 2012-07-12 2019-03-29 Knauf Gips Kg Method for manufacturing of calcium sulfate beta hemihydrate
CN106044826A (en) * 2016-05-26 2016-10-26 东南大学 Crystal modifier for producing alpha type high-strength gypsum

Also Published As

Publication number Publication date
SE366531B (en) 1974-04-29
DK131772C (en) 1976-02-02
FR1599625A (en) 1970-07-15
LU58733A1 (en) 1969-09-12
NL6908130A (en) 1969-12-02
DE1927015A1 (en) 1969-12-04
IE32810L (en) 1969-11-28
DE1927015B2 (en) 1976-12-16
BE733737A (en) 1969-11-03
IE32810B1 (en) 1973-12-12
GB1262083A (en) 1972-02-02
NO124990B (en) 1972-07-03

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