Method and apparatus for continuously calcining gypsum

Details Method and apparatus for continuously calcining gypsum Method and apparatus for continuously calcining gypsum

C - Chemistry, Metallurgy

04

B

C04B 11/02 (2006.01) B01D 11/02 (2006.01) B01J 8/08 (2006.01) C04B 2/10 (2006.01)

Patent

CA 2366295

An apparatus for continuously calcining gypsum includes a flash calcining impact mill, a feed bin adjacent the impact mill for holding gypsum, and a gypsum feed control mechanism for supplying gypsum from the feed bin to the impact mill at a substantially constant rate. A method for continuously producing calcined gypsum includes the steps of providing a flash calcining impact mill and providing a feed bin adjacent the impact mill, the feed bin containing gypsum to be calcined. A gypsum feed control mechanism is provided for supplying gypsum from the feed bin to the impact mill. Gypsum is supplied from the feed bin to the impact mill at a substantially constant rate, and the impact mill is operated to dry, grind, and calcine the gypsum.

L'invention se rapporte à un appareil de calcination continue de gypse comportant un broyeur à percussion pour calcination flash, un réservoir d'alimentation adjacent au broyeur à percussion et conçu pour contenir le gypse, et un mécanisme de commande de l'alimentation en gypse conçu pour amener le gypse dudit réservoir d'alimentation vers le broyeur à percussion à une vitesse sensiblement constante. Un procédé de production en continu de gypse calciné consiste à utiliser un broyeur à percussion pour calcination flash et à utiliser un réservoir d'alimentation adjacent au broyeur à percussion, ledit réservoir contenant le gypse à calciner. Un mécanisme de commande de l'alimentation en gypse est utilisé pour amener le gypse dudit réservoir d'alimentation vers le broyeur à percussion. Le gypse est amené du réservoir d'alimentation vers le broyeur à percussion à une vitesse sensiblement constante, et le broyeur à percussion permet de sécher, moudre et calciner le gypse.

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