FIELD: metallurgy.
SUBSTANCE: electrolysis is carried out in melt of sodium alkali at cathode density of current 0.3-0.7 A/cm2 and at mixing melt for purification from polonium. Bismuth produced after electrolysis is subjected to successive deep purification from lead till its content in purified bismuth is less or equal to 1·10-5 wt %.
EFFECT: increased output of purified bismuth.
5 ex
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