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PROCESS FOR ELECTROLYTIC PRODUCTION OF HIGHLY PURE ZINC OR ZINC COMPOUNDS FROM PRIMARY AND SECONDARY ZINC RAW MATERIALS
PROCESS FOR ELECTROLYTIC PRODUCTION OF HIGHLY PURE ZINC OR ZINC COMPOUNDS FROM PRIMARY AND SECONDARY ZINC RAW MATERIALS
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机译:从初级和次级锌原料中电解生产高纯锌或锌化合物的过程
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摘要
The invention relates to a process involving the following steps: a) performing leaching of the raw material with an acid aqueous solution to dissolve the zinc if said raw material is a solid; b) optionally performing solid-liquid separation; c) neutralizing the aqueous solution once the zinc-containing raw material is in liquid form; d) performing solid-liquid separation of the solution rich in zinc from the solids precipitated during the neutralization step; e) extracting the zinc using an acid organic solvent; f) purifying the organic solvent from the extraction step; g) re-extracting zinc from the organic solvent using an acid aqueous solution; h) recovering the zinc by electrolysis and/or crystallization and/or precipitation. IMAGE
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