Method of coating granular material and apparatus therefor

Details Method of coating granular material and apparatus therefor Method of coating granular material and apparatus therefor

1994-05-13

1996-03-26

Beck, Shrive

Coating processes

Particles, flakes, or granules coated or encapsulated

427215, 427220, 427221, 4273722, 427421, 118 58, 118 64, 118303, B05D 700

Patent

active

055018742

ABSTRACT:
Disclosed are a method of coating a granular material comprising steps of: dropping a granular material from an upper portion in a draft disposed in a coating apparatus; spraying the granular material during falling with a coating solution containing a film-forming material dissolved in a solvent in the draft; drying the granular material sprayed with the coating solution by a drying gas flowing upwardly from a lower portion to an upper portion in the draft; and carrying the dropped granular material to an upper portion in the coating apparatus, and a coating apparatus for coating a surface of a granular material with a coating solution while dropping the granular material, comprising a guide for guiding the granular material, coating solution spray nozzles disposed inside a draft and a means for supplying a drying gas upwardly from a lower portion to an upper portion to the granular material falling in the draft.

REFERENCES:
patent: 4639383 (1987-01-01), Casey
patent: 4686115 (1987-08-01), Majer

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