Process for the recovery of zinc
First Claim
1. A process for recovering zinc and manganese dioxide from material containing zinc and manganese compounds, including treating the material to provide an aqueous sulphate solution containing manganese and zinc ions, electrolyzing the solution in one electrolytic cell with conditions inhibiting the formation of manganese dioxide and favouring the deposition of zinc, said one electrolytic cell containing from about 5 to about 45 g.p.l. manganese ions, electrolyzing the solution in another electrolytic cell with conditions favouring the formation of manganese dioxide, said other electrolytic cell containing from about 30 to about 100 g.p.l. zinc ions, recovering zinc from said one electrolytic cell, and recovering manganese dioxide from said other electrolytic cell.
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Abstract
A process for recovering zinc and manganese dioxide from material containing zinc and manganese compounds, includes leaching the material to provide an aqueous solution containing manganese and zinc ions, electrolyzing the solution in one electrolytic cell with conditions inhibiting the formation of manganese dioxide and favoring the deposition of zinc, and electrolyzing the solution in another electrolytic cell with conditions favoring the formation of manganese dioxide. Zinc is removed from the one electrolytic cell and manganese dioxide is removed from the other electrolytic cell.
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15 Claims
- 1. A process for recovering zinc and manganese dioxide from material containing zinc and manganese compounds, including treating the material to provide an aqueous sulphate solution containing manganese and zinc ions, electrolyzing the solution in one electrolytic cell with conditions inhibiting the formation of manganese dioxide and favouring the deposition of zinc, said one electrolytic cell containing from about 5 to about 45 g.p.l. manganese ions, electrolyzing the solution in another electrolytic cell with conditions favouring the formation of manganese dioxide, said other electrolytic cell containing from about 30 to about 100 g.p.l. zinc ions, recovering zinc from said one electrolytic cell, and recovering manganese dioxide from said other electrolytic cell.
Specification