Sodium carbonate (soda ash) crystal modification

Details Sodium carbonate (soda ash) crystal modification Sodium carbonate (soda ash) crystal modification

1983-10-06

1984-09-18

Cintins, Ivars

Liquid purification or separation

Processes

Ion exchange or selective sorption

210669, 210691, 210694, 423206T, B01D 1500

Patent

active

044722800

ABSTRACT:
The invention comprises a method of removing anionic polymers and acidic organic impurities from aqueous trona solutions prior to crystallization whereby improved crystal formation is achieved which comprises treating such solutions with at least one nitrogen containing cationic compound consisting of water-soluble cationic polymers and fatty substituted quaternary ammonium salts followed by a solid adsorbant from the group consisting of clays and activated carbon.

REFERENCES:
patent: 3259471 (1966-07-01), Cortessis et al.
patent: 3300406 (1967-01-01), Pollio
patent: 3528766 (1970-09-01), Coglaiti et al.
patent: 4075281 (1978-02-01), Port et al.
patent: 4374102 (1983-02-01), Connelly et al.

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