进行了用环烷酸石油亚砜从混合氯化稀土溶液中萃取分离钇的研究。用混合室体积为 1 2 0 L混合澄清槽 ,经 1 2 0级串级分馏萃取分离 ,可获得纯度大于 99.99%的 YC1 3溶液。与环烷酸混合醇体系相比 ,环烷酸石油亚砜体系的分相性能及有机相流动性更好。分离出的 YC1 3溶液经进一步分离非稀土杂质后 ,可用于制取荧光级 Y2 O3产品 ,产品收率可达 90 .5%。 The extraction and separation of yttrium with naphthenic acid sulfoxide from mixed rare earth chloride solution was studied. Mixing chamber with a volume of 120L mixed clarification tank, the 120 fractional distillation column separation and separation, can be obtained more than 99.99% purity YC13 solution. Compared with naphthenic acid mixed alcohol system, the naphthalene sulfoxide sulfoxide system has better phase separation performance and organic phase mobility. The separated YC1 3 solution can be used to prepare fluorescent grade Y2 O3 after further separation of non-rare earth impurities, and the product yield can reach 90.5%.