FIELD: radiochemical technology.
SUBSTANCE: invention relates to radiochemical technology and can be used at enterprises using pyrochemical technology for decontamination of radiochemical equipment and materials. Matrix containing alkali metal chlorides and uranium and plutonium chlorides is held in a high-pressure extraction cell in a supercritical or liquid solvent medium in the presence of an alcohol, crown ether and phosphorus-containing extractant and subsequent collection of extracted metal salts.
EFFECT: invention makes it possible to carry out the method without using water and without formation of corrosive precipitates with provision of high degree of their removal.
5 cl, 3 tbl
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