Composite abrasive particles and method of manufacture

Details Composite abrasive particles and method of manufacture Composite abrasive particles and method of manufacture

B - Operations, Transporting

24

D

B24D 13/18 (2006.01) B01J 13/04 (2006.01) B24D 11/00 (2006.01)

Patent

CA 2426586

The present application discloses an agglomerate. The agglomerate comprises a crystalline matrix. The agglomerate may additionally comprise abrasive particles. The agglomerate has a normalized bulk density of less than about 0.38. The present application additionally discloses a method of manufacturing the agglomerate. The agglomerate is manufactured by forming a mixture comprising an abrasive particle with a sol, the sol comprising an oxide and water and introducing the mixture into a spray dryer. The mixture is then dried in the spray dryer. The mixture is then fired, for example in an oven. The resulting agglomerates comprise abrasive particles retained within a crystalline matrix of the oxide. The present invention additionally discloses methods of using the agglomerates of the resent invention.

La présente invention concerne un agglomérat. L'agglomérat comporte une matrice cristalline. L'agglomérat peut en outre comprendre des particules abrasives. Cet agglomérat présente une densité apparente normalisée de moins d'environ 0.38. L'invention concerne également un procédé de fabrication de l'agglomérat. On produit cet agglomérat par la formation d'un mélange comprenant une particule abrasive et un sol, le sol comportant un oxyde et de l'eau et on introduit le mélange dans un séchoir à pulvérisation. On fait alors sécher le mélange dans le séchoir à pulvérisation. On procède ensuite à la cuisson du mélange, par exemple dans un four. Les agglomérats obtenus comporte des particules abrasives retenues au sein de la matrice cristalline de l'oxyde. L'invention concerne en outre des procédés d'utilisation des agglomérats de la présente invention.

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