METHOD FOR SOLIDIFYING LIQUID RADIOACTIVE WASTES

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, a...

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Hauptverfasser:	DEMIN ANDREJ VLADIMIROVICH, AGEENKOV ARKADIJ TIMOFEEVICH
Format:	Patent
Sprache:	eng ; rus
Schlagworte:	DECONTAMINATION ARRANGEMENTS THEREFOR NUCLEAR ENGINEERING NUCLEAR PHYSICS PHYSICS PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULARRADIATION OR PARTICLE BOMBARDMENT TREATING RADIOACTIVELY CONTAMINATED MATERIAL
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Beschreibung
Zusammenfassung:	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