METHOD OF PROCESSING RADIOACTIVE ION-EXCHANGE RESINS Russian patent published in 2011 - IPC G21F9/08 

FIELD: chemistry.

SUBSTANCE: thermochemical processing of resin is carried out in a sulphuric acid medium with initial concentration of sulphuric acid in the reaction zone ranging from 400 to 1700 g/l in three steps at temperature 100-150°C, 150-250°C and 250-340°C and atmospheric pressure in an apparatus, under conditions with free access to air in the reaction zone, with constant or periodic stirring of the product in the apparatus. The obtained dry product undergoes concreting with binding substances for phosphate hardening (natural minerals or industrial wastes containing metal oxides).

EFFECT: maximum possible reduction in volume and weight of radioactive ion-exchange resins, simplification of the technology and design of equipment, low toxicity and amount of hazardous gaseous emissions into the environment, low power consumption.

2 cl, 4 ex