Spray drying with a plasma of superheated steam
AssigneeNoranda Mines Limited
InventorWilliam H. Gauvin
Life of this patent
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Abstract
A process and a system for drying a solution, a slurry or a solid suspension of a material non-sensitive to heat is disclosed. A spray of finely divided particles is formed in a chamber and a plasma of superheated steam is used as the heat source for drying the particles as they pass through the chamber. The resulting product is removed from the chamber in the form of a suspension of dry particles in superheated steam.
Claims11
A process of drying a solution, a slurry or a solid suspension of material non-sensitive to heat comprising the steps of:
- (a) providing a spray of finely divided particles of said material in a chamber;
- (b) generating a plasma of superheated steam at a temperature higher than 2000.degree. K. within said chamber so as to surround said particles of material with the superheated steam and to dry the same with said steam while they pass through said chamber;
- and
- (c) removing the resulting product from the chamber in the form of a suspension of said particles in the superheated steam.
A system for drying a solution, a slurry or a solid suspension of material non-sensitive to heat comprising:
- (a) means for providing a spray of finely divided particles of said material in a chamber;
- (b) at least one plasma generator for generating a plasma of superheated steam at a temperature higher than 2000.degree. K. within said chamber so as to surround said particles of material with the superheated steam while they pass through said chamber;
- and
- (c) means for removing the resulting product from the chamber in the form of a suspension of said particles in the superheated steam.
Dependencies are inferred from the claim text.