Chemistry of inorganic compounds – Halogen or compound thereof – Ternary compound
Patent
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
Carbaugh John E.
Maloney Bernard A.
Cottrell Bruce H.
Fisher Richard V.
Peterson Jeffrey W.
PPG Industries Inc.
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