METHOD FOR SCANDIUM EXTRACTION FROM PRODUCTIVE SOLUTIONS

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FIELD : chemistry. SUBSTANCE : method includes sorption of rare earth metals solutions on a strongly acidic cation of porous structure with subsequent desorption of rare earth metals and eluate withdrawal. Next, scandium sorption is carried on a porous styrene-divinylbenzene carrier with an impregnated organophosphorus extractant, represented by di-(2, 4, 4-trimethylpentyl)phosphinic acid with addition of di-2-ethylhexyl phosphonic acid to obtain a return solution directed to leaching, and scandium desorption with eluate withdrawal. EFFECT : increased processing efficiency of these solutions due to high sorbent selectivity for scandium extraction in the pH range of the return solution, reduced reagent consumption and improved quality of end scandium products. 4 cl, 3 tbl, 3 ex