| 摘要 |
PROBLEM TO BE SOLVED: To reuse salt waste produced by a dry-type reprocessing method, or to solidify it. SOLUTION: When spent fuel is reprocessed by the dry method, waste of fused salt being an chloride of alkaline metal is produced. After this waste 1 of spent fused salt is dissolved 2 in water, this aqueous solution is electrolytically dialyzed 3. Consequently, impurities are removed, and fused salt being a chloride of alkaline metal is recovered as an aqueous solution of a hydroxide of the alkaline metal. The recovered aqueous solution is caused to react with hydrochloric acid, and is reused again as fused salt. The recovered processed solution 4 is solidified and reused 5. Namely, it is solidified into waste, or it is reacted with phosphoric acid to produce phosphate, and the phosphate is vitrified. COPYRIGHT: (C)2004,JPO
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