Document Type and Number:
Japanese Patent JPS5551854
Kind Code:
B2
Abstract:
A process of recovering and exploiting wastes from chromic anhydride production, wherein the slurry comprising a water suspension of solid waste residue from chromic anhydride processing is subjected to a first reaction stage with sodium chromate solution at a constant flow rate and such a density as to avoid precipitation of sodium sulfate, setting pH to 2-8 by adjusting the slurry flow rate, and finally separating by filtering insoluble chromium chromate formed from the sodium bichromate and sodium sulfate solution.
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Application Number:
JP10121776A
Publication Date:
December 26, 1980
Filing Date:
August 26, 1976
Export Citation:
International Classes:
C01G37/00; C01G37/02; C01G37/033; C01G37/04; C01G37/14