前言溶剂萃取在湿法冶金中得到越来越广泛的应用。关于用溶剂萃取提锂的研究报道甚多。比较早的有了醇、戍醇[1];近年来报道的有用二苯甲酰甲烷与三辛基氧膦[2]以及含氟的β—双酮等在碱性或中性条件下萃取锂[3]。但这些萃取剂有的有较大的缺点,有的价格昴贵,因此限制了它们的工业应用。用苏丹_1—N_(263)体系可以从碱性、中性以及盐湖卤水中有效的萃取锂,并与其它碱金属分 Foreword Solvent extraction is gaining more and more widespread use in hydrometallurgy. There are many reports on the extraction of lithium by solvent extraction. Earlier, alcohol and garcinol [1]; dibenzoylmethane and trioctylphosphine oxide [2] and fluorine-containing β-diketone reported in recent years were extracted under alkaline or neutral conditions Lithium [3]. However, some of these extractants have large disadvantages, some of which are expensive, thus limiting their industrial application. Lithium can be effectively extracted from alkaline, neutral and salt lake brines by the Sudan_1-N_ (263) system and mixed with other alkali metals