ABSTRACT The presence of impurities in the copper electrolyte increases the energy consumption of an electrorefining process and contaminates the deposited copper on cathode. The concentration of impurities increases over time making it necessary to remove them from the solution. This research introduces a fast, effective, and simple method to refine the industrial electrolyte from arsenic, iron and antimony by solvent displacement crystallisation technique. In this method, when alcohol is added to the electrolyte, the impurities precipitate from the solution as amorphous arsenato antimonite phase. Results show that Fe, Sb, and As are removed from the copper electrolyte by 75.2, 96.9 and 99.8%, respectively. Electro winning experiments show that the electric energy consumption for electrodeposition of copper is 15.5% lower when the electrolyte is free of impurities.

中文翻译：

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溶剂置换结晶技术从工业铜电解液中去除砷、锑和铁

摘要 铜电解液中杂质的存在会增加电解精炼过程的能耗并污染阴极上沉积的铜。随着时间的推移，杂质的浓度会增加，因此有必要将它们从溶液中去除。本研究介绍了一种通过溶剂置换结晶技术从砷、铁和锑中提炼工业电解质的快速、有效和简单的方法。在该方法中，当将醇添加到电解质中时，杂质以无定形砷酸锑矿相的形式从溶液中沉淀出来。结果表明，Fe、Sb 和 As 从铜电解液中的去除率分别为 75.2%、96.9% 和 99.8%。电选实验表明，电沉积铜的电能消耗为15。