Granulation and coating by improved method of heat removal

Details Granulation and coating by improved method of heat removal Granulation and coating by improved method of heat removal

1978-06-19

1980-07-22

Arnold, Donald J.

Plastic and nonmetallic article shaping or treating: processes

Formation of solid particulate material directly from molten...

Coated particles

264 14, 264117, B01J 212

Patent

active

042139244

ABSTRACT:
An improved process for the granulation or coating of hygroscopic or nonhygroscopic materials where melt is sprayed onto cascading granules of common or uncommon substrate in an enclosed vessel, and where the heat given off by solidification of the melt is absorbed by evaporation of water. The water is atomized into the granulator as an extremely fine mist and evaporation is effected without impingement of mist on granules or granulator internals. An equation is developed which mathematically represents the thermodynamics of the process and specific values are presented for variables when granulating sulfur or urea.

REFERENCES:
patent: T980005 (1979-03-01), Shirley, Jr.
patent: 3231413 (1966-01-01), Berquin
patent: 3682569 (1972-08-01), Vagin et al.

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