| 摘要 |
PROBLEM TO BE SOLVED: To provide a method of preparing an ingot superior in leach resistance and thermal stability, from a spent filter having radioactive cesium trapped therein.SOLUTION: The method of preparing an ingot superior in leach resistance and thermal stability, from a spent filter having radioactive cesium trapped therein includes a step of grinding and mixing a spent filter having cesium trapped therein, adding a solidifying agent, and sintering the spent filter to prepare a ceramic ingot and uses, as the solidifying agent, one or more selected from a group consisting of Na2O, K2O, Fe2O3, TiO2, MgO, CaO or B2O3. |
