FIELD: lead metallurgy; cleaning of black and secondary lead from bismuth.
SUBSTANCE: proposed method of electrochemical refining of lead from bismuth at cathode polarization of alloy being cleaned with the use of electrolyte of molten caustic soda; bismuth extracted from metal being refined is accumulated in electrolyte-melt of caustic soda followed by separation into self-contained product.
EFFECT: low cost of process for refining stage and self-contained product production stage.
2 dwg, 2 tbl, 1 ex
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