FR2167741A1 - Beta-calcium sulphate semi-hydrate prodn - by calcining calcium sulphate dihydrate and passing the gases over anhydrite - Google Patents

Beta-calcium sulphate semi-hydrate prodn - by calcining calcium sulphate dihydrate and passing the gases over anhydrite

Info

Publication number
FR2167741A1
FR2167741A1 FR7300356A FR7300356A FR2167741A1 FR 2167741 A1 FR2167741 A1 FR 2167741A1 FR 7300356 A FR7300356 A FR 7300356A FR 7300356 A FR7300356 A FR 7300356A FR 2167741 A1 FR2167741 A1 FR 2167741A1
Authority
FR
France
Prior art keywords
calcium sulphate
beta
iii
anhydrite
hydrate
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
FR7300356A
Other languages
English (en)
French (fr)
Other versions
FR2167741B3 (enrdf_load_html_response
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.)
KUENKELE GIPSWERK
Original Assignee
KUENKELE GIPSWERK
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
Priority claimed from DE19722200610 external-priority patent/DE2200610A1/de
Priority claimed from DE19722225817 external-priority patent/DE2225817A1/de
Priority claimed from DE19722226007 external-priority patent/DE2226007A1/de
Application filed by KUENKELE GIPSWERK filed Critical KUENKELE GIPSWERK
Publication of FR2167741A1 publication Critical patent/FR2167741A1/fr
Application granted granted Critical
Publication of FR2167741B3 publication Critical patent/FR2167741B3/fr
Granted 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
    • C04B11/02—Methods and apparatus for dehydrating gypsum
    • 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

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)
FR7300356A 1972-01-07 1973-01-05 Beta-calcium sulphate semi-hydrate prodn - by calcining calcium sulphate dihydrate and passing the gases over anhydrite Granted FR2167741A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19722200610 DE2200610A1 (de) 1972-01-07 1972-01-07 Verfahren zur gewinnung von kalziumsulfatbetahalbhydrat aus kalziumsulfatdihydrat
DE19722225817 DE2225817A1 (de) 1972-05-26 1972-05-26 Verfahren zur herstellung von kalziumsulfathalbhydrat, anhydrit iii und/oder anhydrit ii
DE19722226007 DE2226007A1 (de) 1972-05-29 1972-05-29 Verfahren zur gewinnung von kalziumsulfathalbhydrat aus kalziumsulfatdihydrat

Publications (2)

Publication Number Publication Date
FR2167741A1 true FR2167741A1 (en) 1973-08-24
FR2167741B3 FR2167741B3 (enrdf_load_html_response) 1976-01-09

Family

ID=27184015

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7300356A Granted FR2167741A1 (en) 1972-01-07 1973-01-05 Beta-calcium sulphate semi-hydrate prodn - by calcining calcium sulphate dihydrate and passing the gases over anhydrite

Country Status (2)

Country Link
BE (1) BE793719A (enrdf_load_html_response)
FR (1) FR2167741A1 (enrdf_load_html_response)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0818427A3 (de) * 1996-07-08 1998-01-28 SICOWA Verfahrenstechnik für Baustoffe GmbH & Co. KG Verfahren zur Herstellung von phasenreinem Calciumsulfat-Beta-Halbhydrat

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0818427A3 (de) * 1996-07-08 1998-01-28 SICOWA Verfahrenstechnik für Baustoffe GmbH & Co. KG Verfahren zur Herstellung von phasenreinem Calciumsulfat-Beta-Halbhydrat

Also Published As

Publication number Publication date
FR2167741B3 (enrdf_load_html_response) 1976-01-09
BE793719A (fr) 1973-05-02

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Legal Events

Date Code Title Description
ST Notification of lapse