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2 562 604

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IPC

C22B60/02(2006-01-01)

C22B3/26(2006-01-01)

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Application

2014107440/02, 2014-02-26

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Start date

2014-02-26

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Actual filing date

2014-02-26

(45)

Published

2015-09-10

(72)

Inventor

Kruglov Sergej NikolaevichPashkov Stanislav AleksandrovichRjabov Aleksandr SergeevichSil'Chenko Andrej IvanovichShevelev Andrej MikhajlovichShljazhko Dmitrij Sergeevich

(73)

Holder

Otkrytoe Aktsionernoe Obshchestvo Khimicheskij Kombinat"

METHOD OF REFINING URANIUM BY EXTRACTION Russian patent published in 2015 - IPC C22B60/02 C22B3/26

Abstract RU 2562604 C1

FIELD: chemistry.

SUBSTANCE: method of refining uranium by extraction includes preliminary purification of nitric acid solution of uranyl nitrate by its contact with TBP in diluent. Obtained extraction mixture or stabilised emulsions, preliminarily separated from extraction mixture, are separated by centrifugation into water nitric acid solution of uranyl nitrate, extract and sediment of non-dissolved admixtures. After that, uranyl nitrate solution, obtained in centrifugation, is supplied to uranium refining by extraction, with returning extract to stage of preliminary purification of uranyl nitrate as extragent.

EFFECT: reduction of uranium loss and possibility of extragent re-application.

3 ex

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RU 2 562 604 C1

Authors

Kruglov Sergej Nikolaevich

Pashkov Stanislav Aleksandrovich

Rjabov Aleksandr Sergeevich

Sil'Chenko Andrej Ivanovich

Shevelev Andrej Mikhajlovich

Shljazhko Dmitrij Sergeevich

Dates

2015-09-10—Published

2014-02-26—Filed