FIELD: technological processes.
SUBSTANCE: disclosed is a method of extracting, comprising a step of contacting an organic phase containing as an extractant a dialkyl diglycolamido acid of general formula R1R2NCOCH2OCH2COOH, with an aqueous phase containing scandium and zirconium and / or hafnium, in order to extract zirconium and / or hafnium into an organic phase.
EFFECT: scandium purity can be effectively increased by a simple solvent extraction step.
4 cl, 1 dwg, 2 ex
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