Process and plant for the heat treatment of fine-grained...

Details Process and plant for the heat treatment of fine-grained... Process and plant for the heat treatment of fine-grained...

B - Operations, Transporting

01

J

B01J 6/00 (2006.01) C04B 11/00 (2006.01) C04B 33/32 (2006.01)

Patent

CA 2718385

In the heat treatment of fine-grained mineral solids, in particular for calcining clay or gypsum, the solids are passed through a flash reactor (5), in which they are contacted with hot gases at a temperature of 450 to 1500°C, and subsequently they are passed through a residence time reactor (7) at a temperature of 550 to 800°C, from which they are withdrawn after a residence time of 1 to 600 minutes and possibly supplied to a further treatment stage.

Selon linvention, dans le traitement thermique de matières solides minérales à grain fin, en particulier pour la calcination d'argile ou de gypse, les matières solides sont amenées à passer à travers un réacteur éclair (5), dans lequel elles sont mises en contact avec des gaz chauds à une température de 450 à 1 500°C, et par la suite elles sont amenées à passer à travers un réacteur de temps de séjour (7) à une température de 550 à 800°C, à partir duquel elles sont soutirées après un temps de séjour de 1 à 600 minutes et éventuellement acheminées vers une autre étape de traitement.

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