Apparatus for manufacturing phosphoric acid

Details Apparatus for manufacturing phosphoric acid Apparatus for manufacturing phosphoric acid

1976-02-17

1977-12-27

Richman, Barry S.

Chemistry: physical processes

Physical processes

Crystallization

232593, 23285, 423320, B01J 800, C01F 1146, C01B 2522

Patent

active

040652661

ABSTRACT:
Apparatus for manufacture of wet process phosphoric acid wherein phosphate rock and sulfuric acid are separately added to a combination reactor and cooler unit at a rate of addition such that the increase in calcium content and sulfate content in the slurry contained in the unit are small. Circulation of the slurry is provided and the rate at which sulfuric acid and phosphate rock are added is small compared to the rate of circulation of the reactor slurry.

REFERENCES:
patent: 1945281 (1934-01-01), Leithauser
patent: 2728635 (1955-12-01), Miller
patent: 2827366 (1958-03-01), Saeman
patent: 3104946 (1963-09-01), Veal
patent: 3197280 (1965-07-01), Boyle et al.
patent: 3257168 (1966-06-01), Chelminski
patent: 3416889 (1968-12-01), Caldwell
patent: 3917457 (1975-11-01), Bergstrom
patent: 3939248 (1976-02-01), Caldwell

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