Abstract
Zinc is extracted from oxidized ores with solution, and the zincate electrolyte is purified with zinc powder and lime. The zinc is recovered electrolytically as “flake” powder consisting of pinnate crystals. At 12.9 amp/dm2 (120 amp/ft2) about 1.5 kw hr/lb of zinc is required. Many types of oxidized ores have been tested in the laboratory and some pilot‐plant work has been done; the process appears to be feasible.
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