Stripping and recovery of dichromate in electrolytic...

Details Stripping and recovery of dichromate in electrolytic... Stripping and recovery of dichromate in electrolytic...

C - Chemistry, Metallurgy

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C01G 37/027 (2006.01) C01B 11/14 (2006.01) C01G 37/033 (2006.01) C25B 1/26 (2006.01) C25B 15/08 (2006.01)

Patent

CA 1314688

C-I-L 725 Abstract Stripping And Recovery Of Dichromate In Electrolytic Chlorate Systems A process for removing dichromates from chlorate-rich solutions containing hypochlorite and dichromate ions and produced by the electrolysis of brine. The dichromate is reduced in a two-stage process by the addition of ammonia under controlled conditions of pH and temperature to a mixed di- and trivalent chromium hydroxide which is precipitated from solution and removed. The process provides an economical method of recovering chromium from electrolytically produced chlorate solutions.

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