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首页> 外文期刊>Minerals Engineering >Development of a process for the separation of zinc and copper from sulfuric liquor obtained from the leaching of an industrial residue by solvent extraction
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Development of a process for the separation of zinc and copper from sulfuric liquor obtained from the leaching of an industrial residue by solvent extraction

机译：开发一种从硫酸溶液中分离锌和铜的方法，该硫酸溶液是通过溶剂萃取浸出工业残留物而制得的

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摘要

This paper describes a study of the separation of zinc and copper from the leach liquor generated in the treatment of the zinc residue (29.6 g/L Zn and 37.4 g/L Cu) by liquid-liquid extraction. In it, the influence of the extractant type and concentration, aqueous phase acidity, contact time and stripping agent concen-tration were investigated. Organophosphorus extractants (D2EHPA, IONQ.UEST801 and CYANEX272) and the chelating extractants (L1X63, LIX984N and LIX612N-LV) were also investigated. The organo-phosphorus reagents are selective for zinc, while the chelating extractants are selective for copper. In the experiment, D2EHPA was found to be the best extractant. A sulfuric acid solution was used in the strip-ping study. Five continuous experiments were carried out until an optimal condition for the separation of the metals Zn and Cu was achieved. Experiment 5 was carried out in three extraction steps, three scrub-bing stages and five stripping stages. In this experiment, a pregnant strip solution containing 125 g/L Zn and 0.01 g/L Cu was obtained and the concentration of the metals in the raffinate was 28.3 g/L Cu and 0.49 g/L Zn.
机译：本文描述了通过液-液萃取从处理锌渣（29.6 g / L Zn和37.4 g / L Cu）中产生的浸出液中分离锌和铜的研究。研究了萃取剂的种类和浓度，水相酸度，接触时间和汽提剂浓度的影响。还研究了有机磷萃取剂（D2EHPA，IONQ.UEST801和CYANEX272）和螯合萃取剂（L1X63，LIX984N和LIX612N-LV）。有机磷试剂对锌具有选择性，而螯合萃取剂对铜具有选择性。在实验中，发现D2EHPA是最好的提取剂。硫酸溶液用于汽提研究。进行了五个连续实验，直到达到分离金属Zn和Cu的最佳条件为止。实验5在三个萃取步骤，三个洗涤阶段和五个汽提阶段中进行。在该实验中，获得了含有125 g / L Zn和0.01 g / L Cu的富液剥离溶液，萃余液中的金属浓度为28.3 g / L Cu和0.49 g / L Zn。

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