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湿法冶金生产中,溶剂萃取和离子交换分离技术近20年来经历了平行发展的过程。用有机溶剂浸渍多孔基体材料所制成的液膜,兼有两者的联合性质,因而受到人们的普遍重视。液膜的利用有两种形式:一种是作成液体表面膜,另一种将其作成树脂球体,即所谓溶剂浸渍树脂(简称SIR)。液体表面膜是用溶剂浸渍多孔的聚四氟乙烯、聚丙烯或聚氯乙烯薄膜而成。它靠萃
In the hydrometallurgical production, the solvent extraction and ion exchange separation technologies have undergone a parallel development over the past 20 years. The liquid film made by impregnating the porous substrate with the organic solvent has the joint property of both and thus has drawn people’s universal attention. The use of liquid film in two forms: one is made of liquid surface film, and the other as a resin sphere, the so-called solvent impregnation resin (SIR). Liquid surface film is impregnated with solvent porous polytetrafluoroethylene, polypropylene or polyvinyl chloride film made. It depends on extraction