METHOD OF TREATING PARTICLES

摘要

A method of treating granules with a coating utilizing an apparatus (20) having a feed chute (22), a diffuser (26) mounted adjacent the feed chute (22), a spray nozzle (44), and an exit chute (24) having a deflector (66) disposed below the diffuser (26) and spray nozzle (44). The method comprises the steps of: feeding the granules into the feed chute (22); intersecting the granules with an angled wall of the diffuser (26) to create a curtain of granules falling about a base of the diffuser (26), spraying the coating from the spray nozzle (44) downwardly away from the diffuser (26) toward the deflector (66) of the exit chute (24) in a predetermined conical pattern; and intersecting the granules with the deflector (66) to redirect the granules into the conical pattern of the coating for treating each of the granules with the coating. The subject invention provides a method of efficiently treating a large throughput of granules with an appropriate amount of coating.