Ultra-dry calcium carbonate

Details Ultra-dry calcium carbonate Ultra-dry calcium carbonate

C - Chemistry, Metallurgy

01

F

C01F 11/18 (2006.01) C08K 3/26 (2006.01) C09J 11/04 (2006.01) F26B 3/347 (2006.01) F26B 5/04 (2006.01)

Patent

CA 2509394

The invention relates to ultra-dry calcium carbonate particles, to a method for drying calcium carbonate particles, and to the use of said calcium carbonate. According to the invention, calcium carbonate particles are dried by means of microwaves. The drying process can be carried out in a continuous strip device, a chamber device, or a revolving tubular device. Calcium carbonate particles can be produced with a drying degree of between 0 and 0.1 % of H20.

L'invention concerne des particules de carbonate de calcium ultra-sèches et un procédé de séchage de particules de carbonate de calcium, ainsi que l'utilisation de ce carbonate de calcium. Selon l'invention, des particules de carbonate de calcium sont séchées au moyen de micro-ondes. Le séchage peut être effectué dans un dispositif de passage de bande, dans un dispositif à chambre ou dans un dispositif à chambre tournante. Les particules de carbonate de calcium fabriquées selon l'invention peuvent présenter un degré de dessèchement de 0 à 0,1 % de H¿2?O.

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