| 简介 |
FIELD : chemistry.
SUBSTANCE : invention can be used in technology of selective extracting scandium from concentrates of rare-earth elements (REE). The method for extracting scandium from concentrate of rare-earth elements in the form of an aqueous solution comprises contacting an aqueous solution containing scandium nitrate, REE nitrates, lithium trichloroacetate with a concentration of 1.0-2.0 mol/l with an extractant for 3 minutes. As an extractant, a solution of benzo-15-crown-5 in chloroform is used, and the extraction process is carried out at pH of 3.0-5.0.
EFFECT : increasing the coefficients of metal separation and the possibility of carrying out a process of selective extracting scandium from neutral concentrated solutions of REE nitrates before conducting their group separation processes according to a standard process scheme.
2 cl, 4 ex |
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