METHOD OF PROCESSING SPENT ION-EXCHANGE RESINS FOR DISPOSAL AND DEVICE FOR ITS IMPLEMENTATION Russian patent published in 2019 - IPC G21F9/28 

FIELD: nuclear physics and equipment.

SUBSTANCE: group of inventions relates to nuclear power engineering. Method of treating spent ion-exchange resins for burial involves feeding a mixture of spent ion-exchange resins with transport water into a loading tank, separation of ion-exchange resins from transport water by settling mixture and draining transport water from loading tank, subsequent metered supply of ion-exchange resins separated from transport water into drying chamber, vacuum drying with simultaneous mixing of ion-exchange resins in drying chamber at temperature of not more than 90 °C and unloading the processed ion-exchange resin into the transport container. After completion of vacuum drying in the drying chamber, the ion-exchange resins are subjected to additional thermal treatment in a high-temperature furnace at temperature of 250–300 °C simultaneous stirring and vacuum drying. Treated ion-exchange resin is discharged into the transport container after thermal treatment in a high-temperature furnace. There is also a device for processing spent ion-exchange resins for burial.

EFFECT: group of inventions enables to reduce the volume of unloaded ion-exchange resins and prevent their swelling when exposed to moisture.

15 cl, 1 dwg