Method of prilling material

Details Method of prilling material Method of prilling material

1976-04-01

1977-06-07

White, Robert F.

Plastic and nonmetallic article shaping or treating: processes

Formation of solid particulate material directly from molten...

Utilizing centrifugal force or rotating forming zone

264 14, B01J 204

Patent

active

040284476

ABSTRACT:
A method of prilling material in a prilling tower having the usual means for discharging molten material at the upper end thereof in droplet form to fall freely downwardly therein whereby the droplets cool and solidify in spherical or spheroidal form. A manifold extends about the interior of the upper portion of the tower and directs a continuous spray of water against the interior wall of the tower to provide a falling film of water along such wall substantially entirely about the interior circumference of the prilling chamber to cool the chamber and thus hasten solidification of the material and also prevent deposit of the material on the tower wall. Relatively fine unprilled particles of material which drift outside of the prilling zone and reach the wall of the tower are entrained with the water which is collected separately from the prills at the bottom of the tower and conducted away from the tower where the entrained material may be recovered and the water may be conducted back to the manifold for reuse or discharged.

REFERENCES:
patent: 3272615 (1966-09-01), Hoffman et al.
patent: 3615142 (1971-10-01), Dahlbom
patent: 3739049 (1973-06-01), Honjo

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