Abstract Zinc(II) was recovered from dilute ammoniacal media through an integrated process combining solvent extraction and electrolysis with ammonia stripping. Zinc ions were firstly enriched into organic phase at pH 7.56 through synergistic extraction between β-diketone and TBP or Cyanex 923. The concentration of extracted zinc(II) increased at pH 56 g/L by using β-diketone and Cyanex 923. Metallic zinc can be obtained by direct electrolysis from the ammoniacal stripping solution. The presence of small amounts of the dissolved extractant molecules can improve the crystallization of zinc deposits. A gelatin additive was used to smoothen the morphology of zinc deposits and refine their crystalline structure. These results indicate that the proposed integrated process will facilitate the recovery of various zinc-bearing primary and secondary resources in ammoniacal media.

中文翻译：

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使用集成的溶剂萃取和电解工艺从稀氨介质中回收锌

摘要 通过溶剂萃取、电解与氨汽提相结合的综合工艺，从稀氨介质中回收锌(II)。通过β-二酮和TBP或Cyanex 923的协同萃取，锌离子首先在pH 7.56富集到有机相中。使用β-二酮和Cyanex 923在pH 56 g/L时萃取锌(II)的浓度增加。 金属锌可从氨性汽提液中直接电解获得。少量溶解的萃取剂分子的存在可以改善锌沉积物的结晶。明胶添加剂用于平滑锌沉积物的形态并改善其晶体结构。