FIELD: systems for processing irradiated nuclear fuel of power generation reactors, possibly in application radiochemistry for separating ruthenium out of insoluble residues after processing irradiated nuclear fuel, recovery of ruthenium out of waste catalysts or other technical products.
SUBSTANCE: method comprises steps of placing insoluble residues in electrolyzer filled with nitric acid solution with added silver nitrate; supplying electric current for transmitting easily volatile formed RuO4 by action of air passing through electrolyzer to apparatus filled with absorbing agent.
EFFECT: possibility for separating ruthenium out of insoluble radioactive residues without burying secondary radioactive deposits due to complete dissolving of initial material.
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