REPROCESSING METHOD FOR SPENT FUEL

摘要

PROBLEM TO BE SOLVED: To enhance separation efficiency for separating an impurity from a nuclear material, and to enhance a reprocessing speed.

SOLUTION: A fuel rod is heat-treated under chlorine gas to chlorinate a spent fuel and a sheathing material (first chlorination processing). A solid component provided in the first chlorination processing is heat-treated under chlorine gas containing a reductant (second chlorination processing). A gas component obtained in the second chlorination processing is recovered as a solid component (gas component recovery), and the solid component is heat-treated under the presence of mixture gas comprising chlorine gas and oxygen gas (oxidation processing). The solid component provided in the second chlorination processing is heat-treated under inert gas (FP separation processing). A solid component obtained in the oxidation processing, and a solid component obtained in the FP separation processing are dissolved into a molten salt to electrolyze the molten salt (MOX electrolyzing processing).

COPYRIGHT: (C)2004,JPO