METHOD OF PROCESSING COPPER-VANADIUM WASTES FROM PURIFICATION OF TITANIUM TETRACHLORIDE Russian patent published in 2014 - IPC C22B15/00 C22B7/00 C22B3/10 C22B3/46 

FIELD: chemistry.

SUBSTANCE: solid copper-vanadium wastes are leached with water to obtain copper-vanadium pulp, to which is added calcium hypochloride or clarified pulp from gas treatment facilities from titanium-magnesium production with concentration of active chlorine equal to 15-90 g/dm³, with ratio of calcium hypochlorite to the copper-vanadium pulp of (1.5-2.0):1. The pulp is held while stirring for 2-5 hours. Hydrochloric acid is added while stirring until achieving solution pH of 2.0-3.0. The suspension is filtered and the copper (II) solution is fed into a cementing apparatus. The precipitate in the form of a mixture of a reducing agent and copper powder is separated into copper powder and a reducing agent. The copper powder is washed, filtered and dried and iron impurities are removed by magnetic separation. After decantation, the reducing agent is returned to the cementing step.

EFFECT: high copper extraction and improved processing properties of the obtained copper powder.

10 cl, 3 ex