METHOD OF REPROCESSING RADIOACTIVE ION-EXCHANGE RESIN Russian patent published in 2009 - IPC G21F9/08 

FIELD: chemistry.

SUBSTANCE: method of reprocessing radioactive ion-exchange resin, including thermal treatment of ion-exchange resin in steam-heated apparatus and curing undecomposed organic carrier of ion-exchange resin, is enabled in glyptal solution with initial volumetric ratio of wet ion-exchange resins to glyptal solution being 1:0.05 to 1:1. On thermal treatment at temperature 105-145°C resin is dehydrated and soaked in glyptal solution until water stops to evaporate. Then excess glycerine is distilled at temperature 145-180°C until glycerine to phthalic anhydride ratio optimum for synthesis of glyptal resin is obtained. Distilled glycerine condensate is delivered back to reprocessing cycle of the next portion of ion-exchange resin with following synthesis of glyptal resin at temperature 180-225°C.

EFFECT: reduced volume of buried end radioactive products, improved ecological conditions of their reprocessing and long-term storage, lower power inputs, and simplified procedure of reprocessing radioactive sorbents.