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研究了以１－苯基－３－甲基－４－苯甲酰基吡唑酮－５（ＰＭＢＰ）为流动载体的乳状液膜（ＥＬＭ）法提取钪，确定最佳液膜体系组成为０．４％ＰＭＢＰ－３％Ｓｐａｎ８０－５％液体石蜡－煤油－３ｍｏｌ／ＬＨＣｌ，Ｒｏｉ＝１：１（油内比）．Ｒｗｅ（水乳比）可达２０：１．用该体系对钪与混合稀土进行分离，钪的回收率可达９５．５％，分离系数β（ＳＣ／ＲＥ）＝３２．０。
The scandium was extracted by emulsion liquid membrane (ELM) method using 1-phenyl-3-methyl-4-benzoylpyrazolone-5 (PMBP) as mobile carrier. 4% PMBP-3% Span 80-5% liquid paraffin-kerosene -3 mol / LHCl, Roi = 1: 1 (oil internal ratio). Rwe (water to milk ratio) up to 20: 1. Scandium and mixed rare earths were separated by this system. The scandium recovery rate was 95.5% and the separation coefficient β (SC / RE) = 32.0.