GB1297535A - - Google Patents

Info

Publication number
GB1297535A
GB1297535A GB1297535DA GB1297535A GB 1297535 A GB1297535 A GB 1297535A GB 1297535D A GB1297535D A GB 1297535DA GB 1297535 A GB1297535 A GB 1297535A
Authority
GB
United Kingdom
Prior art keywords
hemihydrate
dihydrate
dehydration
rehydration
impure
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.)
Expired
Application number
Other languages
English (en)
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 filed Critical
Publication of GB1297535A publication Critical patent/GB1297535A/en
Expired 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
    • 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
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/60—Particles characterised by their size
    • C01P2004/61—Micrometer sized, i.e. from 1-100 micrometer
    • 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)
GB1297535D 1970-05-14 1970-05-14 Expired GB1297535A (US07122547-20061017-C00224.png)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2349670 1970-05-14

Publications (1)

Publication Number Publication Date
GB1297535A true GB1297535A (US07122547-20061017-C00224.png) 1972-11-22

Family

ID=10196564

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1297535D Expired GB1297535A (US07122547-20061017-C00224.png) 1970-05-14 1970-05-14

Country Status (1)

Country Link
GB (1) GB1297535A (US07122547-20061017-C00224.png)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2640961A1 (US07122547-20061017-C00224.png) * 1988-12-22 1990-06-29 Lafarge Platres
WO1990014309A1 (fr) * 1989-05-23 1990-11-29 Lafarge Coppee Procede de preparation par voie aqueuse de dihydrate de sulfate de calcium purifie
EP0818427A2 (de) * 1996-07-08 1998-01-14 SICOWA Verfahrenstechnik für Baustoffe GmbH & Co. KG Verfahren zur Herstellung von phasenreinem Calciumsulfat-Beta-Halbhydrat

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2640961A1 (US07122547-20061017-C00224.png) * 1988-12-22 1990-06-29 Lafarge Platres
EP0378837A1 (fr) * 1988-12-22 1990-07-25 Lafarge Coppee Préparation de sulfate de calcium dihydrate à structure cristalline longiligne
WO1990014309A1 (fr) * 1989-05-23 1990-11-29 Lafarge Coppee Procede de preparation par voie aqueuse de dihydrate de sulfate de calcium purifie
FR2647433A1 (fr) * 1989-05-23 1990-11-30 Lafarge Coppee Da Procede de preparation par voie aqueuse de sulfate de calcium purifie
EP0406550A1 (fr) * 1989-05-23 1991-01-09 Lafarge Coppee Procédé de préparation par voie aqueuse de dihydrate de sulfate de calcium purifié
EP0818427A2 (de) * 1996-07-08 1998-01-14 SICOWA Verfahrenstechnik für Baustoffe GmbH & Co. KG Verfahren zur Herstellung von phasenreinem Calciumsulfat-Beta-Halbhydrat
EP0818427A3 (de) * 1996-07-08 1998-01-28 SICOWA Verfahrenstechnik für Baustoffe GmbH & Co. KG Verfahren zur Herstellung von phasenreinem Calciumsulfat-Beta-Halbhydrat

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees