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2 613 246

(13)

(51)

IPC

C22B59/00(2006-01-01)

C22B3/24(2006-01-01)

(21) (22)

Application

2016122935, 2016-06-09

(24)

Start date

2016-06-09

(22)

Actual filing date

2016-06-09

(45)

Published

2017-03-15

(72)

Inventor

(73)

Holder

Aktsionernoe Obshchestvo Proektnyj I Konstruktorskij Institut Gornogo Dela I Metallurgii Tsvetnykh Metallov"

METHOD FOR SCANDIUM EXTRACTION FROM PRODUCTIVE SOLUTIONS Russian patent published in 2017 - IPC C22B59/00 C22B3/24

Abstract RU 2613246 C1

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

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RU 2 613 246 C1

Authors

Dates

2017-03-15—Published

2016-06-09—Filed