海水提锂技术的研究进展

在陆地锂资源总量远不能满足锂远景市场需求的情况下,研究海水提锂技术十分必要。介绍了从海水中提取锂的方法,认为吸附-离子交换法是有着广阔发展前景的绿色海水提锂方法,其关键就是要找到合适的吸附剂。介绍了几种无机离子交换吸附剂的吸附机理,重点论述了尖晶石型钛氧化物、锂-锰氧化物以及复合型离子筛吸附剂的技术现状。分析了目前离子筛型吸附剂法海水提锂存在的问题,指出造粒和成膜是提锂技术工业化亟待解决的问题。

Study progress in lithium extracting technology from seawater

Onshore lithium resources can not far meet the future market demands,the necessity of extracting lithium from seawater at present was pointed out.Some approaches of extracting lithium from seawater were introduced,and ion-exchange adsorption method was considered to be one of the most promising green methods for extracting lithium from seawater,and the key point was to discover the appropriate adsorbents.Adsorbing mechanism of several inorganic adsorbents was introduced.Present technical situation of ion-sieve adsorbents of spinel titanium oxide,lithium manganese oxide,and compound ion-sieve was reviewed in detail.On the basis of analysis of the primary problems about extraction of lithium from seawater,it was pointed that the technological problems of making granulation and membrane were urgently needed to be solved to realize the industrialization of extracting lithium.