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Publication of LU39511A1publicationCriticalpatent/LU39511A1/xx
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
C04B11/028—Devices therefor characterised by the type of calcining devices used therefor or by the type of hemihydrate obtained
C04B11/036—Devices therefor characterised by the type of calcining devices used therefor or by the type of hemihydrate obtained for the dry process, e.g. dehydrating in a fluidised bed or in a rotary kiln, i.e. to obtain beta-hemihydrate