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2 316 387

(13)

(51)

IPC

B01F1/00(2006-01-01)

G21C19/00(2006-01-01)

(21) (22)

Application

2005109636/15, 2005-04-04

(24)

Start date

2005-04-04

(22)

Actual filing date

2005-04-04

(45)

Published

2008-02-10

(72)

Inventor

Ermolin Vladimir StanislavovichShevtsev Pavel PavlovichUfimtsev Vitalij PavlovichBespalova Vitalija Evgen'Evna

(73)

Holder

Federal'Noe Gosudarstvennoe Unitarnoe Predprijatie Ob"Edinenie

METHOD FOR DISSOLVING FUEL ELEMENTS INCORPORATING MAGNESIUM METAL Russian patent published in 2008 - IPC B01F1/00 G21C19/00

Abstract RU 2316387 C2

FIELD: dissolving irradiated nuclear fuel incorporating magnesium metal; radiochemical industry.

SUBSTANCE: proposed method for dissolving fuel elements incorporating magnesium metal involves dissolution of non-hated fuel-element magnesium component in nitric acid of 8-12 mole/l concentration. Solution obtained in the process is heated and fuel composition is dissolved therein. This method provides for minimal amount of released hydrogen, formation of minimal possible amount of solutions suited to further recovery with aid of Pyrex scheme due to use of only one reagent in minimal and quite sufficient volume.

EFFECT: enhanced explosion and fire safety of process, reduced time taken to dissolve fuel elements.

1 cl, 2 dwg, 2 ex

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RU 2 316 387 C2

Authors

Ermolin Vladimir Stanislavovich

Shevtsev Pavel Pavlovich

Ufimtsev Vitalij Pavlovich

Bespalova Vitalija Evgen'Evna

Dates

2008-02-10—Published

2005-04-04—Filed