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

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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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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creator BROSIG, ALFRED
JÄGER, REINHARD
description 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.
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subjects ARTIFICIAL STONE
CEMENTS
CERAMICS
CHEMISTRY
COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS
CONCRETE
LIME, MAGNESIA
METALLURGY
REFRACTORIES
SLAG
TREATMENT OF NATURAL STONE
title METHOD FOR THE PRODUCTION OF ALPHA-CALCIUM SULFATE HEMIHYDRATE FROM CALCIUM SULFATE DIHYDRATE
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