Selective chromate removal from a chlorate solution

Details Selective chromate removal from a chlorate solution Selective chromate removal from a chlorate solution

C - Chemistry, Metallurgy

01

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23/234, 204/62.5

C01G 37/14 (2006.01) C01B 11/14 (2006.01) C01G 37/00 (2006.01) C25B 1/24 (2006.01)

Patent

CA 1119772

ABSTRACT A method has been devised for removing hexavalent chromium from concentrated aqueous alkali metal chlorate solutions by reacting the solution with a hydrazine compound and separating trivalent chromium compound from the solution. Alkali metal hyprohalites may be simultaneously removed from a chlorate solu- tion by reaction with excess hydrazine compound.

349968

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