Process for electrowinning of metals

Chemistry: electrical and wave energy – Processes and products – Electrostatic field or electrical discharge

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204107, 204108, 204112, 204113, 204114, 204118, 204293, C25C 108, C25C 112, C25C 116

Patent

active

042723396

ABSTRACT:
An electrowinning process for the recovery of various metals including copper, zinc and nickel from an aqueous electrolyte in an electrolytic cell containing anodes and cathodes is disclosed wherein the anodes are formed from a lead alloy containing from about 0.05% to about 0.25% by weight strontium. The lead alloy for the anodes also preferably includes from about 0.005% to about 0.1% by weight aluminum alone or in further combination with either about 0.1% to about 5.0% by weight tin or at least 0.01% by weight silver, the lead alloy anodes having a hard, adherent oxide surface layer preferably formed in situ within the electrolytic cell.

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Bagshaw, N. E., "Pb-Sr Alloys for Battery Grids", J. Power Sources, 2(1977/78), pp. 337-350. _
Young, J. A. et al., "Cast Pb-Ca-Sn Grids for Maintenance-Free Batteries", presented at 1973 Meeting Battery Council Int'l. _

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