METHOD FOR THE PRODUCTION OF ALPHA-CALCIUM SULFATE HEMIHYDRATE FROM CALCIUM SULFATE DIHYDRATE

Production of alpha calcium hemihydrate from calcium dihydrate comprises charging an autoclave (1) with calcium dihydrate, indirectly heating the autoclave, adding water in a controlled manner and mixing, preventing caking on surfaces of the reaction chamber using chains (3) arranged on paddles and/...

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Bibliographische Detailangaben
Hauptverfasser:	BROSIG, ALFRED, JÄGER, REINHARD
Format:	Patent
Sprache:	eng ; pol
Schlagworte:	ARTIFICIAL STONE CEMENTS CERAMICS CHEMISTRY COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS CONCRETE LIME, MAGNESIA METALLURGY REFRACTORIES SLAG TREATMENT OF NATURAL STONE
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Beschreibung
Zusammenfassung:	Production of alpha calcium hemihydrate from calcium dihydrate comprises charging an autoclave (1) with calcium dihydrate, indirectly heating the autoclave, adding water in a controlled manner and mixing, preventing caking on surfaces of the reaction chamber using chains (3) arranged on paddles and/or the drive shaft (16) of the autoclave, regulating the pressure in the chamber in intervals or continuously using vapor discharge, introducing cold air for residual drying and removing the processed material. An independent claim is also included for a device for producing alpha calcium hemihydrate from calcium dihydrate.