Chemistry: physical processes – Physical processes – Crystallization
Patent
1978-08-16
1980-05-13
Bernstein, Hiram H.
Chemistry: physical processes
Physical processes
Crystallization
423206T, B01D 902
Patent
active
042026679
ABSTRACT:
An improved process for the production of soda ash from trona including the steps of sizing the trona, heating the trona to eliminate water and carbon dioxide therefrom, dissolving the trona in an aqueous medium to obtain a solution thereof, removing insoluble solid materials from the solution, crystallizing sodium carbonate monohydrate from the solution, and heating the crystallized sodium carbonate monohydrate to produce soda ash. The improvement of the invention comprises the step of removing insoluble solid materials from the solution of trona by classifying the insoluble solid materials in a plurality of hydroclones.
REFERENCES:
patent: 3479134 (1969-11-01), Warzel
patent: 3840120 (1974-10-01), Greenberg
patent: 4021527 (1977-05-01), Baadsguard
Trawinski, E & MJ, Sep., 1976, pp. 115-127.
Conroy Edward H.
Gloster Arthur
King James A.
Bernstein Hiram H.
Texasgulf Inc.
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