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2 536 312

(13)

(51)

IPC

C22B60/02(2006-01-01)

C22B3/44(2006-01-01)

(21) (22)

Application

2013151273/02, 2013-11-19

(24)

Start date

2013-11-19

(22)

Actual filing date

2013-11-19

(45)

Published

2014-12-20

(72)

Inventor

Alkhimov Nikolaj BorisovichEfremov Jurij PavlovichChumak Lesja Grigor'EvnaStefanovskij Dmitrij Valer'Evich

(73)

Holder

Federal'Noe Gosudarstvennoe Unitarnoe Predprijatie Institut Nauchno-Proizvodstvennoe Ob"Edinenie Npo

METHOD OF EXTRACTING URANIUM FROM PHOSPHATE SOLUTIONS Russian patent published in 2014 - IPC C22B60/02 C22B3/44

Abstract RU 2536312 C1

FIELD: metallurgy.

SUBSTANCE: invention relates to hydraulic metallurgy, particularly to extraction of uranium from used phosphate solutions. This process consists in adding the solvent to initial solution, said solvent being selected from the series: KMnO₄, K₂Cr₂O₇, HNO₃, H₂O₂, KClO₃. Then, uranium-bearing sediment is precipitated by acidity correction by ammonia to pH 2.8-4.0 at 20-35°C. Filtered precipitate is treated by 20-35% solution of NaOH at 80-85°C for 1.5-2.0 hours.

EFFECT: higher yield of uranium, return of high-enriched uranium to fuel cycle, lower costs of higher safety at long-term storage, accounting and control.

2 cl, 1 tbl, 4 ex

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RU 2 536 312 C1

Authors

Alkhimov Nikolaj Borisovich

Efremov Jurij Pavlovich

Chumak Lesja Grigor'Evna

Stefanovskij Dmitrij Valer'Evich

Dates

2014-12-20—Published

2013-11-19—Filed