Chemistry of inorganic compounds – Treating mixture to obtain metal containing compound – Radioactive metal
Reexamination Certificate
2007-02-06
2007-02-06
Bos, Steven (Department: 1754)
Chemistry of inorganic compounds
Treating mixture to obtain metal containing compound
Radioactive metal
C423S001000, C423S251000, C423S253000
Reexamination Certificate
active
10761432
ABSTRACT:
It is an object to increase a reprocessing speed of spent nuclear fuel and to obtain uranium having a high purity and a plutonium mixture reusable as it is at a low cost through a simple procedure.The spent nuclear fuel1is subjected to fluorination using fluorine2in a fluorination step3, and as a result, uranium, a mixture of uranium and plutonium and a fission product are separated and recovered independently of one another. The plutonium fluoride volatilized in the fluorination is recovered along with a fixing agent and then passed through an oxidative conversion step8, thereby recovering a mixture of uranium and plutonium oxides9. Since the uranium can be recovered in a high purity, it is managed very easily when reused or saved. Further, since the uranium and plutonium are recovered as a mixture thereof, fuel reproduction cost is decreased and prevention of proliferation is strengthened.
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Nuclear Chemical Engineering, Second Edition, edited by M. Benedict, et al., translated by Ryohei Kiyose, Chapter 10, pp. 457-564.
Aoji, T., et al. “Dry Reprocessing Process, Development History and Current Status” Nuclear power industry (Gensiryoku-Kogyo), issued by the Nikkan Kogyo Shinbun-sha (daily industrial newspaper office), Nov. 19, 2002, vol. 17, No. 3.
Amano Osamu
Aoi Masakatsu
Hoshino Kuniyoshi
Kawamura Fumio
Kobayashi Hiroaki
Bos Steven
Fiorito James
Hitachi , Ltd.
Tokyo Electric Power Co., Inc.
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