BE750404A - Procede de preparation de sulfate de calcium hemi-hydrate a partir de gypses impurs en particulier de gypse residuaire d'acide phosphorique. - Google Patents

Procede de preparation de sulfate de calcium hemi-hydrate a partir de gypses impurs en particulier de gypse residuaire d'acide phosphorique.

Info

Publication number
BE750404A
BE750404A BE750404DA BE750404A BE 750404 A BE750404 A BE 750404A BE 750404D A BE750404D A BE 750404DA BE 750404 A BE750404 A BE 750404A
Authority
BE
Belgium
Prior art keywords
gypses
impure
phosphoric acid
calcium sulphate
acid gypsum
Prior art date
Application number
Other languages
English (en)
Original Assignee
Giulini Gmbh Geb
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 Giulini Gmbh Geb filed Critical Giulini Gmbh Geb
Publication of BE750404A publication Critical patent/BE750404A/fr

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
    • 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
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/10—Solid density

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Inorganic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
BE750404D 1969-01-30 1970-05-14 Procede de preparation de sulfate de calcium hemi-hydrate a partir de gypses impurs en particulier de gypse residuaire d'acide phosphorique. BE750404A (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19691904496 DE1904496A1 (de) 1969-01-30 1969-01-30 Verfahren zur Herstellung von Calciumsulfat-Halbhydrat aus verunreinigten Gipsen,insbesondere Phosphorsaeure-Abfallgips
BE750404 1970-05-14

Publications (1)

Publication Number Publication Date
BE750404A true BE750404A (fr) 1970-11-16

Family

ID=25656817

Family Applications (1)

Application Number Title Priority Date Filing Date
BE750404D BE750404A (fr) 1969-01-30 1970-05-14 Procede de preparation de sulfate de calcium hemi-hydrate a partir de gypses impurs en particulier de gypse residuaire d'acide phosphorique.

Country Status (3)

Country Link
BE (1) BE750404A (fr)
DE (1) DE1904496A1 (fr)
NL (1) NL6917766A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114031319A (zh) * 2021-12-07 2022-02-11 新希望化工投资有限公司 一种磷石膏生产建筑石膏粉的方法

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2241232B2 (de) * 1972-08-22 1979-08-23 Babcock-Bsh Ag Vormals Buettner- Schilde-Haas Ag, 4150 Krefeld Verfahren zur Herstellung von Branntgipsen
US4388292A (en) * 1981-12-14 1983-06-14 United States Gypsum Company Process for reducing radioactive contamination in phosphogypsum
US4421731A (en) * 1982-09-29 1983-12-20 United States Gypsum Company Process for purifying phosphogypsum

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114031319A (zh) * 2021-12-07 2022-02-11 新希望化工投资有限公司 一种磷石膏生产建筑石膏粉的方法

Also Published As

Publication number Publication date
DE1904496A1 (de) 1970-08-06
NL6917766A (fr) 1970-08-03

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