DK114183B - Process for the preparation of calcium sulphate semi-hydrate. - Google Patents

Process for the preparation of calcium sulphate semi-hydrate.

Info

Publication number
DK114183B
DK114183B DK96963A DK96963A DK114183B DK 114183 B DK114183 B DK 114183B DK 96963 A DK96963 A DK 96963A DK 96963 A DK96963 A DK 96963A DK 114183 B DK114183 B DK 114183B
Authority
DK
Denmark
Prior art keywords
hydrate
preparation
calcium sulphate
sulphate semi
semi
Prior art date
Application number
DK96963A
Other languages
Danish (da)
Inventor
F Wirsching
B Wandser
K Knauf
Original Assignee
Knauf Westdeutsche Gips
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 Knauf Westdeutsche Gips filed Critical Knauf Westdeutsche Gips
Publication of DK114183B publication Critical patent/DK114183B/en

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
    • 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
    • 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
    • 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
    • C04B11/26—Calcium sulfate cements strating from chemical gypsum; starting from phosphogypsum or from waste, e.g. purification products of smoke

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Inorganic Chemistry (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
DK96963A 1962-03-09 1963-03-02 Process for the preparation of calcium sulphate semi-hydrate. DK114183B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEK46118A DE1174672B (en) 1962-03-09 1962-03-09 Process for the preparation of calcium sulfate dihydrate

Publications (1)

Publication Number Publication Date
DK114183B true DK114183B (en) 1969-06-02

Family

ID=7224092

Family Applications (1)

Application Number Title Priority Date Filing Date
DK96963A DK114183B (en) 1962-03-09 1963-03-02 Process for the preparation of calcium sulphate semi-hydrate.

Country Status (4)

Country Link
DE (1) DE1174672B (en)
DK (1) DK114183B (en)
GB (1) GB1027434A (en)
SE (1) SE300105B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10023496B1 (en) * 2017-06-16 2018-07-17 United States Gypsum Company No fiber calcination of gypsum for gypsum fiberboard
CN114409285B (en) * 2022-01-05 2023-06-13 北新集团建材股份有限公司 Gypsum raw material pretreatment method

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1713868A (en) * 1928-07-18 1929-05-21 Rumford Chemical Works Process of treating acidulous by-product calcium sulphate

Also Published As

Publication number Publication date
DE1174672B (en) 1964-07-23
SE300105B (en) 1968-04-08
GB1027434A (en) 1966-04-27

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