Process for treating radioactive waste

Details Process for treating radioactive waste Process for treating radioactive waste

G - Physics

21

F

G21F 9/16 (2006.01) G21F 9/14 (2006.01) G21F 9/30 (2006.01) G21F 9/34 (2006.01)

Patent

CA 2123692

Radioactive waste occurs for example in the form of contaminated powdery ionic exchange resin. This ion exchange resin is to be made suitable for final storage by reducing its volume as much as possible. According to the invention, this is performed by a process according to which the ion exchange resin is mechanically dewatered, the dewatered ion exchange resin is mixed with a calcium compound, is then dried with the addition of heat and after which, finally, the dry mixture is thermally treated at a pressure of less than 1000 hPa by heating up to a temperature in the range from 120 to 190°C. The ion exchange resin thereby loses its water absorption and swelling capability. Ion exchange resins treated in this manner are processed with cement or bitumen to form blocks suitable for final storage.

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