用固-液萃取法研究了稀土元素的萃取分离。讨论了不同的萃取溶剂、萃取剂、电解质以及协萃等对萃取效果的影响,探索了固-液萃取法分离稀土元素的最佳条件。 The solid-liquid extraction was used to study the extraction and separation of rare earth elements. The effects of different extraction solvents, extractants, electrolytes and co-extraction on the extraction were discussed. The optimum conditions for the separation of rare earth elements by solid-liquid extraction were explored.