Electrolytic recovery of gallium or gallium and vanadium in...

Details Electrolytic recovery of gallium or gallium and vanadium in... Electrolytic recovery of gallium or gallium and vanadium in...

C - Chemistry, Metallurgy

25

C

204/66.5

C25C 1/22 (2006.01)

Patent

CA 1158597

ABSTRACT OF THE DISCLOSURE A process for electrolytically recovering gallium or gallium and vanadium from alkaline liquors of the alumina production comprises conducting electrolysis on solid elec- trodes with a cathode current density between 200 and 1000 A/m2, at a voltage between 3.4 and 4.5 V, and at 28 to 37 C in the presence of a metal previously introduced to start- ing alkaline liquors, which forms when electrolytically reduced together with gallium an alloy therewith which is not passivated under the electrolysis conditions, the concen- tration of said metal being between 0.15 and 5.0 g/l with a gallium concentration between 0.15 and 0.5 g/l. The process for electrolytically recovering gallium or gallium and vanadium concentrate from alkaline liquors may find applica- tion in the alumina production.

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