Process of treating metal chloride wastes

Details Process of treating metal chloride wastes Process of treating metal chloride wastes

C - Chemistry, Metallurgy

22

B

53/371

C22B 3/10 (2006.01) C22B 3/44 (2006.01) C22B 7/02 (2006.01) C22B 34/12 (2006.01)

Patent

CA 2011855

A process of treating metal chloride wastes produced by chlorination of titanium ore comprises the steps of: (a) leaching said metal chloride wastes in a hydrochloric acid (HC1)-containing solution to obtain a solution containing solids and dissolved metals, (b) separating said dissolved metals from said solids present in the solution obtained in step (a) to obtain a liquid and a residue, (c) selectively precipitating the metals as their hydroxides by adding a neutralizing agent to the liquid obtained in step (b), (d) separating the precipitate of metal hydroxides obtained in step (c) from the liquid to obtain a residue, and (e) dewatering the residue obtained in step (d).

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