Method and means for uniformly coating particulate material

Details Method and means for uniformly coating particulate material Method and means for uniformly coating particulate material

1994-08-24

1996-02-27

Beck, Shrive

Coating processes

Spraying

427212, 427215, 427242, 118 19, 118303, B05D 102

Patent

active

054947090

ABSTRACT:
An apparatus is provided for uniformly coating particulate material. The apparatus includes a frame, a cylindrical drum rotatable about an axis tilted with respect to a horizontal plane, and a spray nozzle extending into the drum so as to spray a coating solution onto the particulate material tumbled within the rotating drum. Perforations in the side wall of the drum allow a flow of air through the drum so as to dry the material within the drum as it is coated with solution. A vacuum system removes the coated seeds from the drum without manual handling. In operation, the seeds form a dense mass, and migrate away from the mass as the seeds increase in size and weight from the sprayed coating. Eventually, all of the particles are uniformly coated, and thus a new mass is formed and the process repeated until the material reaches a desired size.

REFERENCES:
patent: 3934545 (1976-01-01), Schady
patent: 4064831 (1977-12-01), Okawara
patent: 4649855 (1987-03-01), Preis
patent: 4688514 (1987-08-01), Yamabayashi et al.

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