C - Chemistry – Metallurgy – 04 – B
Patent
C - Chemistry, Metallurgy
04
B
C04B 11/036 (2006.01) B01J 6/00 (2006.01) B01J 8/26 (2006.01) C04B 11/028 (2006.01)
Patent
CA 2083824
Abstract of Disclosure: Both the drying and also the removal of the water crystalization take place carefully in a respective fluidized bed apparatus (A, B) without any danger of overheating. This is achieved by a complete homogenous fluidization through indirectly heated hot gas. A substantial quantity of energy is transferred via heat exchanger systems (4 or 12) in the fluidized layer. These are heated by heat carrying media. The constructional design of the fluidized bed apparatuses (A, B) which have a rectangular base outline ensures a narrow dwelltime spectrum and a pronounced temperature/moisture profile without the aid of differentially fluidized chambers. Because of the comparatively cold infeed zone and the careful heating which thereby arise the characteristics of the crystals are favourably influenced. The product is characterized by high quality homogenity. In the case of the calcining of moist gypsum no undesired gypsum modifications arise. (single Figure)
Krohl Paul
Lindner Heiko
Promineral Gesellschaft Zur Verwendung von Mineralstoffen
Sulzer-Escher Wyss Gmbh
Swabey Ogilvy Renault
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