Process for granulating molten material
AssigneeSvenskt Stal Aktiebolag
InventorNils Tiberg
Life of this patent
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Abstract
A process for granulating slag melts, glass melts, ceramic melts, metal melts and melts of metal alloys, particularly blast furnace slag melts, the melt being shaped into at least one thin, liquid melt stream moving freely in a predetermined direction and which, by meeting at a predetermined incidence angle with a stream of fine-grained, solid particles and/or gas, particularly inert gas, flowing substantially freely in a substantially uniform direction at a high rate of flow in relation to the melt stream or melt streams, being converted at least partly into a substantially fine-grained granulate having a fan-shaped distribution over at least part of the opposite angle to the incidence angle.
Claims37
A process for granulating slag melts, glass melts, ceramic melts and melts of metal alloys, comprising the steps of:
- (A) creating a flowing stream of molten material;
- (B) widening said stream of molten material to form a melt film as it flows;
- (C) creating a substantially freely flowing stream of fine-grained, said particles;
- (D) imparting a rate of flow to the stream of solid particles that is greater than that of the melt film and directing the stream of solid particles in a substantially uniform direction against a widened side of said stream of molten material at an incidence angle which will atomize said stream of molten material into a fan-shaped distribution of droplets over at least part of an opposite angle to the incidence angle;
- (E) cooling said droplets into a substantially fine-grained granulate;
- and
- (F) collecting the fine-grained granulate.
Dependencies are inferred from the claim text.