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(19)

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2 291 504

(13)

(51)

IPC

G21F9/16(2006-01-01)

G21F9/04(2006-01-01)

G21F9/20(2006-01-01)

(21) (22)

Application

2005102380/06, 2005-01-31

(24)

Start date

2005-01-31

(22)

Actual filing date

2005-01-31

(45)

Published

2007-01-10

(72)

Inventor

Demin Andrej VladimirovichAgeenkov Arkadij Timofeevich

(73)

Holder

Federal'Noe Agentstvo Po Atomnoj EhnergiiFederal'Noe Gosudarstvennoe Unitarnoe Predprijatie Nauchno-Issledovatel'Skij Institut Neorganicheskikh Materialov Im. Akad. A.A. Bochvara"

METHOD FOR SOLIDIFYING LIQUID RADIOACTIVE WASTES Russian patent published in 2007 - IPC G21F9/16 G21F9/04 G21F9/20

Abstract RU 2291504 C2

FIELD: environment protection against radioactive pollutants; immobilization of nuclear radioactive wastes.

SUBSTANCE: proposed method for solidifying liquid radioactive wastes includes their spray drying and calcination, calcination product vitrification using flux dopes, melt draining to tank, and annealing of solid block. Liquid radioactive wastes are heated in advance in continuous flow to evaporate 30-80 percentage ratio of water contained in them, and steam-water mixture produced in the process is sprayed under its own pressure in chamber heated to temperature of 600-800 °C. Solid particles of calcination product are separated from steam-gas mixture by sedimentation at temperature below 300 °C and filtration.

EFFECT: extended service life of equipment, enhanced productivity and radiation safety for personnel handling highly radioactive products.

1 cl

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RU 2 291 504 C2

Authors

Demin Andrej Vladimirovich

Ageenkov Arkadij Timofeevich

Dates

2007-01-10—Published

2005-01-31—Filed