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2 724 971

(13)

(51)

IPC

G21F9/00(2006-01-01)

C25B1/00(2006-01-01)

C01G56/00(2006-01-01)

(21) (22)

Application

2019121356, 2019-07-25

(24)

Start date

2019-07-25

(22)

Actual filing date

2019-07-25

(45)

Published

2020-06-29

(72)

Inventor

Efremov Igor GennadevichGrigoreva Elena OlegovnaAlekseenko Vladimir NikolaevichObedin Andrej Viktorovich

(73)

Holder

Federalnoe Gosudarstvennoe Unitarnoe Predpriyatie Kombinat"

METHOD OF PRODUCING SOLUTION OF TETRAVALENT PLUTONIUM NITRATE Russian patent published in 2020 - IPC G21F9/00 C25B1/00 C01G56/00

Abstract RU 2724971 C1

FIELD: chemistry.

SUBSTANCE: invention relates to hydrometallurgical methods for reprocessing of irradiated nuclear fuel (INF), in particular, invention can be used for stabilization of plutonium (IV) in nitrate solutions at separation of actinide elements by extraction methods. Method of producing a solution of a nitrate salt of tetravalent plutonium consists in electrochemical reduction on a cathode of a solution of a nitrate acid salt of hexavalent plutonium in an electrolysis cell with separated anode and cathode spaces at 25÷35 °C and cathode current density 3÷6 A/dm².

EFFECT: invention enables to achieve recovery degree of plutonium (VI) to plutonium (IV) of 99_8 %.

1 cl

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RU 2 724 971 C1

Authors

Efremov Igor Gennadevich

Grigoreva Elena Olegovna

Alekseenko Vladimir Nikolaevich

Obedin Andrej Viktorovich

Dates

2020-06-29—Published

2019-07-25—Filed