TECHNETIUM SOLUTION SOLIDIFICATION TECHNIQUE Russian patent published in 1999 - IPC

FIELD: recovery of radioactive technetium solutions formed in recovering irradiated nuclear fuel. SUBSTANCE: technique consists in that silica gel is saturated with technetium while evaporating technetium solution in the environment of dopes facilitating technetium sorption, such as complexing agents, this process being followed by treating technetium-saturated silica gel with reducing solution, its drying out, and baking at 100-400 C to transform technetium into difficultly soluble technetium dioxide. EFFECT: provision for producing easily disposable chemically resistant and non-dusty technetium form. 5 tbl, 3 ex