| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a melted salt electrolytic re-treatment method capable of recovering a higher-quality fuel component having no contamination of impurities such as a noble metal element, and prolonging the service life by suppressing corrosion of a crucible base material constituting an electrolytic cell, concerning re-treatment of a spent fuel by melted salt electrolysis. <P>SOLUTION: In this re-treatment method, a process of melting uranium oxide in the spent fuel at a positive electrode and depositing/recovering it at a solid negative electrode is repeated in a plurality of times, and the concentration of plutonium ions in the melted salt is raised, and then the plutonium ions are oxidized into pultonyl ions. Then, a liquid metal is inputted into the melted salt, and the plutonium oxide is deposited and recovered by an exchange reaction between the pultonyl ions and the liquid metal. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
