Sulfate removal from alkali metal chlorate solutions

Details Sulfate removal from alkali metal chlorate solutions Sulfate removal from alkali metal chlorate solutions

C - Chemistry, Metallurgy

01

B

23/136

C01B 11/14 (2006.01) C01F 11/00 (2006.01)

Patent

CA 1254366

ABSTRACT A process for the removal of essentially chromium-free sulfate from a chromate and sulfate-containing chlorate liquor includes mixing the chlorate liquor having a pH of between about 2.0 and 6.0 with a calcium-containing material at a temperature and for a time sufficient to form a sulfate-containing precipitate predominantly of glauberite and separating the substantially chromium-free glauberite from the chlorate liquor.

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