To develop a reprocessing method which achieves the selective sulfurization of only nuclear fission products at a low temperature and also attains the separation/recovery of nuclear fuel materials in a highly nuclear non-proliferative condition.
In a method for reprocessing spent nuclear fuel, compounds of nuclear fission products in it are selectively sulfurized by a mechanochemical treatment and the washing of the compounds with a dilute acid dissolves sulfide to recover fuel materials. The sulfide is dissolved and the fuel materials are separated/recovered as solid oxide by mixing the powder obtained after the oxidization of the spent nuclear fuel materials with a sulfurizing agent and using the mechanochemical treatment to reduce the fuel materials, selectively sulfurize the nuclear fission products and wash them with the dilute acid.
KANO JUNYA
SAITO FUMIYOSHI
KIRISHIMA HIROMI
| JP4025809B2 | 2007-12-26 |
JPN6012044559; '「２．２．２ 先行基礎工学研究に関する平成１９年度研究概要報告書」' ＪＡＥＡ-Ｒｅｖｉｅｗ ２００８-０４２, 20081028, １１４-１１７頁, 日本原子力研究開発機構
Hideo Shimizu
Yuichi Takagi
Yoshinao Nakano
Ryoichi Mizobuchi
Hideki Akiba