Refractory material for cement industry kilns and use thereof

Details Refractory material for cement industry kilns and use thereof Refractory material for cement industry kilns and use thereof

C - Chemistry, Metallurgy

04

B

C04B 35/18 (2006.01) C04B 33/04 (2006.01) C04B 35/565 (2006.01) C04B 35/66 (2006.01)

Patent

CA 2435576

The invention relates to a refractory material for cement industry kilns and the use thereof. The inventive material can be used inside cement industry kilns in order to counteract the thermal and physico-chemical deformation that occur inside the kilns. The inventive composition is based on a combination comprising at least 10% by weight of andalusite (Al2SiO5), at least 10% by weight of silicon carbide (SiC) and at least 5% by weight of clay. Moreover, kaolinite (Al2Si2O5(OH)4) can be used instead of andalusite in equal proportions. The refractory material can be used to line the inside of the cement kilns in the calcination areas (2), in the kiln outlet (6) and in the coolers (7).

L'invention concerne un matériau réfractaire pour fours à ciment ainsi que l'utilisation dudit matériau, lequel peut être utilisé dans lesdits fours pour neutraliser la déformation thermique et physico-chimique qu'ils subissent. Ledit matériau se compose d'une combinaison d'au moins 10 % en poids d'andalousite (Al¿11?SiO¿4?), d'au moins 10 % en poids de carbure de silicium (SiC) et d'au moins 5 % en poids d'argile. On peut également utiliser, dans des proportions égales, de la kaolinite ( Al¿4? [ (OH)¿8? (SiO¿4?)¿4? ] au lieu de l'andalousite. On peut appliquer ledit matériau réfractaire comme revêtement à l'intérieur des fours à ciment, dans les zones de calcination (2), dans la zone de sécurité (3), dans la zone de sortie (6) et dans les caloporteurs (7).

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