Digestive crystallizing process and apparatus for purification o

Details Digestive crystallizing process and apparatus for purification o Digestive crystallizing process and apparatus for purification o

1989-05-09

1991-03-05

Russel, Jeffrey E.

Chemistry of inorganic compounds

Halogen or compound thereof

Binary compound containing metal

423184, 423208, 23297, C01D 314, C01D 308

Patent

active

049976370

ABSTRACT:
Disclosed is a method of reducing the sodium chloride content of potassium chloride by forming an aqueous slurry of potassium chloride feed crystals having a wide particle size distribution with an average diameter of about 0.1 to about 50 microns in a liquor saturated with potassium chloride and undersaturated with sodium chloride, which is at least 50% saturated with sodium chloride, whereby the smaller of the feed crystals dissolve and potassium chloride grows on the larger of the feed crystals to form product crystals removing the product crystals from the slurry. Also disclosed is an apparatus for carrying out this process.

REFERENCES:
patent: 3419899 (1968-12-01), Tufts et al.
patent: 3440023 (1969-04-01), Hoppe et al.
patent: 3642454 (1972-02-01), Nylander
patent: 4248601 (1981-02-01), McGough et al.
patent: 4303624 (1981-12-01), Dotson et al.
patent: 4385902 (1983-05-01), Haugrud

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