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2 341 575

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IPC

C22B60/02(2006-01-01)

C01G43/00(2006-01-01)

(21) (22)

Application

2005130940/15, 2005-10-05

(24)

Start date

2005-10-05

(22)

Actual filing date

2005-10-05

(45)

Published

2008-12-20

(72)

Inventor

Abramov Nikolaj Vasil'EvichBezhetskij Sergej VladimirovichBirjukova Alla Gennad'EvnaBirjukov Petr BorisovichGofman Andrej Al'BertovichStolbova Elena FedorovnaJaroshenko Natal'Ja Nikolaevna

(73)

Holder

Aktsionernoe Obshchestvo Metallurgicheskij Zavod"

METHOD OF PROCESSING URANIUM-GADOLINIUM-CONTAINING SCRAPS OF FUEL MANUFACTURE FROM URANIUM DIOXIDE Russian patent published in 2008 - IPC C22B60/02 C01G43/00

Abstract RU 2341575 C2

FIELD: chemistry.

SUBSTANCE: method of processing uranium-gadolinium-containing scraps of fuel production from UO₂ includes dissolving scrap in mineral acid, filtration of solution, extraction of uranium with tributylphosphate. In order to purify from admixtures, extragent in zone of extraction, mainly uranium-free, is taken to additional step of washing with solution of complexon or ammonium fluoride, after which it is returned to next in turn level of extraction.

EFFECT: smaller corrosion stress on equipment and reduced consumption of reagents.

5 ex

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RU 2 341 575 C2

Authors

Abramov Nikolaj Vasil'Evich

Bezhetskij Sergej Vladimirovich

Birjukova Alla Gennad'Evna

Birjukov Petr Borisovich

Gofman Andrej Al'Bertovich

Stolbova Elena Fedorovna

Jaroshenko Natal'Ja Nikolaevna

Dates

2008-12-20—Published

2005-10-05—Filed