METHOD FOR OBTAINING SORBENT MATRIX MATERIAL BASED ON NATURAL ZEOLITE FOR IMMOBILIZING RADIONUCLIDES

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FIELD : technological processes. SUBSTANCE : invention relates to methods for producing sorbent matrix materials for immobilizing radionuclides of alkaline-earth and rare earth elements from spent nuclear fuel. Method for obtaining material based on a natural zeolite for immobilizing radionuclides is as follows. Aqueous suspension of zeolite-containing rocks is heated in a water bath, subjected to sonication at a conversion frequency of 20±2 kHz for 30–60 minutes, the precipitate is separated off, dried, steamed over boiling water for 30–90 minutes and re-dried. EFFECT : invention makes it possible to increase the total sorption capacity of the sorbent material and to reduce the rate of leaching of radionuclides from it. 4 cl, 1 ex