The regeneration of failed hydroxyoxime extractants in the copper hydrometallurgy industry is crucial. However, the existing regeneration system has limitations in terms of operability, yield, and environmental friendliness, which restricts its industrial application. This paper presents a clean one-pot ammoximation regeneration system for the in-situ preparation of hydroxylamine for the oximation of aldehydes, catalyzed by TS-1 with NH and HO. It was tailored based on the characteristics of the degraded organic phase produced by long-term operation at the copper solvent extraction site. The developed system demonstrates an excellent regeneration conversion efficiency (>90%) for the degraded copper-extracted organic phase. Following regeneration, the copper extraction efficiency of the organic phase reaches the same level as the fresh organic phase and maintains good copper extraction stability even after multiple extraction cycles. Moreover, the phase separation performance was improved through optimization. This regeneration system meets the demand for environmentally friendly and resourceful utilization of degraded waste organic phases in copper extraction systems.

中文翻译：

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通过 TS-1 分子筛/H2O2 系统高效氨肟化和再生降解的羟基肟 CP150，并重新用于溶剂萃取 Cu(II)


在铜湿法冶金工业中，失效的羟基肟萃取剂的再生至关重要。然而，现有的再生系统在可操作性、收率和环境友好性方面存在局限性，限制了其工业应用。本文提出了一种清洁的一锅氨肟再生系统，用于在 TS-1 与 NH 和 H2O 催化下原位制备用于醛肟化的羟胺。它是根据铜溶剂萃取现场长期运行产生的降解有机相的特点量身定制的。开发的系统对降解的铜萃取有机相表现出优异的再生转化效率（>90%）。再生后，有机相的铜萃取效率达到与新鲜有机相相同的水平，并且即使在多次萃取循环后仍保持良好的铜萃取稳定性。此外，通过优化提高了相分离性能。该再生系统满足了铜萃取系统中降解的废有机相的环保和资源化利用的需求。