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本文介绍了异羟肟酸型螯合萃取剂 H106的稳定性及其在金属萃取中的行为,研究了用 H106进行金属萃取的机理和萃合物的稳定常数.实验结果表明,H106的稳定性很高,对金属的萃取性能很好.H106是一种一元弱酸,在试验条件下,它通过氧-氧配位,与金属离子形成内络盐 MeL_n.其对各金属离子的萃取能力强弱与金属络合物积累稳定常数的大小顺序相一致.在一定条件下,在萃取中表现出极佳的选择性.用 H106由湿法炼锌厂置换渣的硫酸浸出液中回收 Ga 和 Ge 已获得十分满意的结果.也可以用于微量钛测定和其他许多方面.
In this paper, the stability of hydroxamic chelate extractant H106 and its behavior in metal extraction are introduced, the mechanism of metal extraction with H106 and the stability constants of the complex are studied.The experimental results show that the stability of H106 H106 is a kind of monovalent weak acid, under the experimental conditions, it forms the internal network salt MeL_n with metal ions through oxygen-oxygen coordination, and its ability to extract various metal ions is strong Consistent with the order of magnitude of the stability of the metal complex accumulation under certain conditions, showed excellent selectivity in the extraction.Recovery of Ga and Ge with H106 from sulfuric acid leachate displaced by the hydrometallurgical plant has been obtained Very satisfied with the results. Can also be used for trace titanium determination and many other aspects.