Treatment of sulphuric acid solutions containing tellurium,...

Details Treatment of sulphuric acid solutions containing tellurium,... Treatment of sulphuric acid solutions containing tellurium,...

C - Chemistry, Metallurgy

22

B

53/285, 53/295

C22B 3/00 (2006.01) C22B 3/20 (2006.01) C22B 3/44 (2006.01) C22B 15/00 (2006.01) C22B 61/00 (2006.01)

Patent

CA 1319826

-12- Abstract of the Disclosure: A process for the treatment of a sulphuric acid solution containing tellurium, copper sulphate, and minor impurity elements is disclosed. The process comprises the steps of recirculating the sulphuric acid solution between a first tank containing such solution and a second reactor tank containing a bed of copper particles for a time interval sufficient to cement substantially all the tellurium present in the leach liquor as copper telluride, adding oxygen to the first and/or second tank to form a copper sulphate solution during recirculation of the sulphuric acid solution between the first and second tanks, and separating the cemented copper telluride from the copper sulphate solution.

520041

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