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2 755 814

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(51)

IPC

G21F9/28(2006-01-01)

B01D11/04(2006-01-01)

(21) (22)

Application

2020126927, 2020-08-12

(24)

Start date

2020-08-12

(22)

Actual filing date

2020-08-12

(45)

Published

2021-09-21

(72)

Inventor

Murzin Andrej AnatolevichRyabkova Nadezhda ValentinovnaKamaeva Elena AndreevnaKrasnikov Leonid VladilenovichZherebtsov Aleksandr AnatolevichShadrin Andrej Yurevich

(73)

Holder

Aktsionernoe Obshchestvo

COMPOSITION FOR CONVERSION OF SOLID FORMS OF ACTINOIDS AND RARE EARTH ELEMENTS INTO A SOLUBLE FORM Russian patent published in 2021 - IPC G21F9/28 B01D11/04

Abstract RU 2755814 C1

FIELD: radiochemistry.

SUBSTANCE: invention relates to the field of radiochemical technology and can be used in production of uranium-plutonium fuel compositions for returning actinides to production, for deactivation of radiochemical equipment and materials, and for extraction of actinoids from solid radioactive waste. A composition saturated with nitric acid, consisting of a solvent, a complexing agent, and an activator is proposed to be used in the invention. Use of, e.g., freon as a solvent, trialkylphosphine oxide compounds as a complexing agent, and Ce(IV) salts as an activator are proposed.

EFFECT: invention allows for substantial reduction in the volume of liquid waste from the corresponding manufacturing facilities.

3 cl

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RU 2 755 814 C1

Authors

Murzin Andrej Anatolevich

Ryabkova Nadezhda Valentinovna

Kamaeva Elena Andreevna

Krasnikov Leonid Vladilenovich

Zherebtsov Aleksandr Anatolevich

Shadrin Andrej Yurevich

Dates

2021-09-21—Published

2020-08-12—Filed