B - Operations – Transporting – 22 – C
Patent
B - Operations, Transporting
22
C
B22C 1/18 (2006.01) B22C 1/00 (2006.01)
Patent
CA 2274687
The invention relates to a process for preparing free flowing particles covered with a layer of water glass, comprising the steps of: (a) providing a mixture containing particles to be covered, water and 0.1-5 % by weight water glass, calculated on the basis of the weight of the particles, the water glass being dissolved in said mixture, and (b) stirring the mixture mechanically, optionally by supplying heat from an extern heat source, and permitting the water to evaporate from the mixture until at least so much water is evaporated that said mixture is no longer sticky. Furthermore, the invention relates to a process for preparing an article with a detailed surface.
Procédé pour préparer des particules à écoulement libre enrobées d'une couche de verre soluble sodium, consistant (a) à réaliser un mélange contenant les particules à enrober, de l'eau et de 0,1 à 5 % en poids de verre soluble sodium, calculé sur la base du poids des particules, le verre soluble étant dissous dans ce mélange, et (b) à brasser mécaniquement ce mélange, avec éventuellement un apport de chaleur provenant d'une source de chaleur extérieure, et à permettre à l'eau de s'évaporer du mélange au moins jusqu'à ce que le mélange ne soit plus visqueux. L'invention porte en outre sur un procédé pour préparer un article présentant une surface finie.
Dti Industri
Seaby & Associates
LandOfFree
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