Method of reprocessing spent nitride nuclear fuel in molten chloride

摘要

A method for retreating spent nitride nuclear fuel in a molten salt, which comprises chlorinating the fuel in a melt of a mixture of alkali metals and / or alkaline earth metal chlorides containing cadmium dichloride. Proposed. Chloridation is carried out in an apparatus for reprocessing spent nitride nuclear fuel using an inert gas atmosphere. The device has a heating zone containing a reactor in which molten chloride and spent nitride nuclear fuel are submerged, and a cold zone located beneath the reactor. In the chlorination process, the zone of the device containing the reactor is heated to a temperature above 700 ° C, the spent nitride nuclear fuel is retained in the melt until it is completely chlorinated, and the cold zone of the device is chlorinated. It is used to crystallize the metal cadmium formed between. The technical result of the present invention is to increase the conversion rate of spent nitride nuclear fuel in molten chloride to 100%, which requires an additional step of repeated filtration and reprocessing of spent nuclear fuel. Reduce or completely eliminate sex. [Selection diagram] Fig. 1