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GB2009726A - Process for preparing gypsum - Google Patents

Process for preparing gypsum

Info

Publication number
GB2009726A
GB2009726A GB7843638A GB7843638A GB2009726A GB 2009726 A GB2009726 A GB 2009726A GB 7843638 A GB7843638 A GB 7843638A GB 7843638 A GB7843638 A GB 7843638A GB 2009726 A GB2009726 A GB 2009726A
Authority
GB
United Kingdom
Prior art keywords
gypsum
preparing gypsum
ppm
preparing
natural
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
GB7843638A
Other versions
GB2009726B (en
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.)
Pechiney SA
Original Assignee
Ugine Kuhlmann SA
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 Ugine Kuhlmann SA filed Critical Ugine Kuhlmann SA
Publication of GB2009726A publication Critical patent/GB2009726A/en
Application granted granted Critical
Publication of GB2009726B publication Critical patent/GB2009726B/en
Expired legal-status Critical Current

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

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)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Silicates, Zeolites, And Molecular Sieves (AREA)

Abstract

A process for preparing a gypsum which is suitable for the preparation of anhydrite binders having improved properties, which process comprises treating a natural or synthetic gypsum in such a manner that the sodium content of the gypsum is less than 500 ppm and the fluorine content of the gypsum is greater than 2000 ppm.
GB7843638A 1977-12-09 1978-11-08 Process for preparing gypsum Expired GB2009726B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7737127A FR2413338A1 (en) 1977-12-09 1977-12-09 GYPSUM FOR PREPARATION OF ANHYDRITE BINDERS

Publications (2)

Publication Number Publication Date
GB2009726A true GB2009726A (en) 1979-06-20
GB2009726B GB2009726B (en) 1982-10-27

Family

ID=9198658

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7843638A Expired GB2009726B (en) 1977-12-09 1978-11-08 Process for preparing gypsum

Country Status (14)

Country Link
JP (1) JPS5488926A (en)
AT (1) AT375904B (en)
BE (1) BE872519A (en)
BR (1) BR7808095A (en)
ES (1) ES475845A1 (en)
FR (1) FR2413338A1 (en)
GB (1) GB2009726B (en)
IL (1) IL55872A (en)
IT (1) IT1109065B (en)
NL (1) NL7812010A (en)
OA (1) OA06125A (en)
PT (1) PT68823A (en)
SE (1) SE436125B (en)
ZA (1) ZA786905B (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2246345C3 (en) * 1972-09-21 1979-09-20 Gebr. Knauf Westdeutsche Gipswerke, 8715 Iphofen Process for the production of practically non-blooming gypsum products
FR2265701B1 (en) * 1974-03-26 1980-11-14 Charbonnages Ste Chimique
DE2427122B2 (en) * 1974-06-05 1976-12-30 Gebr. Knauf Westdeutsche Gipswerke, 8715 Iphofen PROCESS FOR STABILIZING THE ALPHA CALCIUM SULPHATE HALBYDRATE DURING THE MANUFACTURE OF WET PHOSPHORIC ACID

Also Published As

Publication number Publication date
GB2009726B (en) 1982-10-27
FR2413338B1 (en) 1982-08-20
NL7812010A (en) 1979-06-12
IL55872A (en) 1981-10-30
IT1109065B (en) 1985-12-16
PT68823A (en) 1978-12-01
ATA877078A (en) 1984-02-15
IL55872A0 (en) 1979-01-31
ZA786905B (en) 1979-12-27
OA06125A (en) 1981-06-30
BE872519A (en) 1979-06-05
AT375904B (en) 1984-09-25
JPS5488926A (en) 1979-07-14
SE436125B (en) 1984-11-12
IT7869766A0 (en) 1978-12-01
BR7808095A (en) 1979-08-07
ES475845A1 (en) 1980-01-16
FR2413338A1 (en) 1979-07-27
SE7812571L (en) 1979-06-10

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee