Method for dry reprocessing of spent nuclear fuel to obtain zirconium alloy fuel directly

摘要

A method for dry reprocessing of spent nuclear fuel to obtain a direct zirconium alloy nuclear fuel includes the following steps. Determining the composition and ratio of the molten salt composition used to dissolve the spent nuclear fuel based on the design requirements for the zirconium alloy fuel in the reactor and the content of the actinide-based metal in the spent nuclear fuel. Dissolving spent nuclear fuel in the molten salt composition described above. Electrodeposition was performed using a selected electrode pair, and zirconium in the molten salt composition and uranium ions or uranium and other actinoid metal ions in the spent nuclear fuel were deposited together to meet the design requirements. Obtaining a zirconium alloy nuclear fuel; This dry nuclear fuel reprocessing method can be applied to oxide spent nuclear fuel and metal spent nuclear fuel, and the process is simple and controllable, with low energy consumption, low cost, and industrialization. Is easy.