Separation of complex potassium salts from brine evaporites

Details Separation of complex potassium salts from brine evaporites Separation of complex potassium salts from brine evaporites

1974-11-18

1976-07-06

Wolk, Morris O.

Chemistry: physical processes

Physical processes

Crystallization

23298, 23300, 23302R, 23303, 423179, 423551, B01D 904, C01D 500

Patent

active

039679306

ABSTRACT:
Evaporite minerals comprising mixtures of relatively coarse salts are treated in a manner such that certain of said salts are converted by recrystallization to very finely divided form and then separated from the coarse salts by size classification such as elutriation, the treatment being especially useful in a process for the recovery of potassium sulfate from marine evaporite mixtures such as kainite and halite.

REFERENCES:
patent: 1476873 (1923-12-01), Burnham
patent: 1589680 (1926-06-01), Burnham
patent: 3003849 (1961-10-01), Veronica
patent: 3365278 (1968-01-01), Kelly et al.
patent: 3499725 (1970-03-01), Scarfi et al.
patent: 3615259 (1971-10-01), Neitzel
patent: 3642454 (1972-02-01), Nylander

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