| 摘要 |
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 100-150C, 150-250C and 250-340C 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 |
