Production of attrition-resistant catalyst binders through...

Details Production of attrition-resistant catalyst binders through... Production of attrition-resistant catalyst binders through...

B - Operations, Transporting

01

J

B01J 20/12 (2006.01) B01J 21/16 (2006.01) B01J 27/16 (2006.01) B01J 29/06 (2006.01)

Patent

CA 2156607

Attrition-resistant binders can be pre- pared by a process wherein a slurry of delam- inated and calcined clay particles is brought to either a low pH level (e.g., 1.0 to 3.0) or to a high pH level (e.g., 14.0 to 10.0) and mixed with a phostate-containing compound in a concentration of from about 2.0 to about 20.0 weight percent. Preferably, the resulting slurry is spray dried and the particulate prod- ucts of the spray drying are then calcined to produce attrition-resistant binder particles.

Liant résistant à l'attrition et pouvant être préparé selon le procédé suivant : amener un coulis de particules d'argile délaminées et calcinées à un pH faible (p. ex., de 1,0 à 3,0) ou à un pH élevé (p. ex., de 14,0 à 10,0), et le mélanger avec un composé contenant du phosphate dans une concentration de 2,0 à environ 20,0 % en masse. De préférence, le coulis obtenu est séché par pulvérisation et les particules résultantes sont alors calcinées pour produire des particules de liant résistant à l'attrition.

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