Granulation

Details Granulation Granulation

1982-08-24

1986-01-28

Bernstein, Hiram H.

Plastic and nonmetallic article shaping or treating: processes

Forming articles by uniting randomly associated particles

Agitating to form larger particles

252 95, 25217424, C09C 156

Patent

active

045670102

ABSTRACT:
Granules of the magnesium salts of percarboxylic acid carboxylates are obtained by spraying onto agitated feed particles of the salt a small amount of a dilute aqueous solution of a synthetic poly hydroxy-substituted compound, particularly polyvinylalcohol and drying the resultant agglomerate. It is especially suitable to carry out the granulation process in a warm air fluidized bed using feed particles of mainly below 200 microns producing eventually a low bulk density product mainly in the range 200-1000 microns.
In a modification of the fluidized bed process, the agglomerating agent used can be a aqueous solution of carboxylated polyvinyl alcohol.

REFERENCES:
patent: 3494787 (1970-02-01), Lund et al.
patent: 4134725 (1979-01-01), Buchel et al.
patent: 4372868 (1983-02-01), Saran et al.
patent: 4385008 (1983-05-01), Hignett
patent: 4403994 (1983-09-01), Hignett
patent: 4414130 (1983-11-01), Cheng
Abstract of JA 50/91596, 1975.

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