Sulfate removal from alkali metal chlorate solutions

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

1985-09-30

1987-01-13

Fisher, Richard V.

Chemistry of inorganic compounds

Halogen or compound thereof

Ternary compound

423183, 423199, 204 95, 210702, 210723, 210724, 210726, 210737, C01B 1114

Patent

active

046363769

ABSTRACT:
A process for the removal of essentially chromium-free sulfate from a chromate and sulfate-containing chlorate liquor which 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, Na.sub.2 Ca(SO.sub.4).sub.2, and separating the substantially chromium-free glauberite from the chlorate liquor.

REFERENCES:
patent: 3846081 (1974-11-01), Dean et al.
patent: 3970528 (1976-07-01), Zirngiebletal
patent: 4132759 (1979-01-01), Schafer

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