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2 472 709

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(51)

IPC

C01G43/00(2006-01-01)

G21C3/00(2006-01-01)

(21) (22)

Application

2011133846/05, 2011-08-11

(24)

Start date

2011-08-11

(22)

Actual filing date

2011-08-11

(45)

Published

2013-01-20

(72)

Inventor

Dedov Nikolaj VladimirovichKozyrev Anatolij StepanovichKorotkevich Vladimir MikhajlovichKruglov Sergej Nikolaevich

(73)

Holder

Otkrytoe Aktsionernoe Obshchestvo Khimicheskij Kombinat"

METHOD OF PREPARING URANIUM DIOXIDE POWDER Russian patent published in 2013 - IPC C01G43/00 G21C3/00

Abstract RU 2472709 C1

FIELD: chemistry.

SUBSTANCE: invention relates to the technology of producing nuclear fuel for power reactors, and particularly to processes of producing uranium dioxide powder for making fuel rods. The method of producing uranium dioxide powder, which contains a burnable absorber, involves decomposition of sprayed uranium nitrate solution, containing a starting component of the burnable absorber, in a stream of a plasma coolant in the presence of a reducing agent, and separating the end product from the obtained dust and gas mixture, the starting component of the burnable absorber added to the solution being boric acid.

EFFECT: invention enables to obtain uranium dioxide powder which is sintered with boron, with given boron content, and provides full output of boron into the powder.

4 cl, 1 dwg, 1 tbl

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RU 2 472 709 C1

Authors

Dedov Nikolaj Vladimirovich

Kozyrev Anatolij Stepanovich

Korotkevich Vladimir Mikhajlovich

Kruglov Sergej Nikolaevich

Dates

2013-01-20—Published

2011-08-11—Filed