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2 522 619

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IPC

C01G43/25(2006-01-01)

(21) (22)

Application

2013100366/05, 2013-01-09

(24)

Start date

2013-01-09

(22)

Actual filing date

2013-01-09

(45)

Published

2014-07-20

(72)

Inventor

Vishnevskij Vjacheslav Jur'EvichD'Jakov Evgenij KonstantinovichKotov Aleksandr Jur'EvichRepnikov Vladimir Mikhajlovich

(73)

Holder

Rossijskaja Federatsija, Ot Imeni Kotoroj Vystupaet Gosudarstvennaja Korporatsija Po Atomnoj EhnergiiFederal'Noe Gosudarstvennoe Unitarnoe Predprijatie Institut Nauchno-Proizvodstvennoe Ob"Edinenie Npo

METHOD OF OBTAINING URANIUM DIOXIDE Russian patent published in 2014 - IPC C01G43/25

Abstract RU 2522619 C1

FIELD: chemistry.

SUBSTANCE: method of obtaining uranium dioxide consists in hydration of metal uranium at a temperature of 200-220°C, dehydration at a temperature of 470-500°C and oxidation at a temperature of 600-800°C in a flow of a mixture of hydrogen and water vapours in a ratio 40:1-1.2 (molar parts).

EFFECT: increased dispersity and specific surface of an uranium dioxide powder, obtaining uranium dioxide with oxygen coefficient close to stoichiometric one, reduction of the process duration.

2 cl, 1 tbl

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RU 2 522 619 C1

Authors

Vishnevskij Vjacheslav Jur'Evich

D'Jakov Evgenij Konstantinovich

Kotov Aleksandr Jur'Evich

Repnikov Vladimir Mikhajlovich

Dates

2014-07-20—Published

2013-01-09—Filed