Treatment of fuel debris using molten fluorides
| Project/Area Number |
15K06665
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Nuclear engineering
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| Research Institution | Tokyo City University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
佐藤 修彰 東北大学, 多元物質科学研究所, 教授 (70154078)
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| Co-Investigator(Renkei-kenkyūsha) |
UEHARA Akihiro 京都大学, 原子炉実験所, 助教 (30402952)
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| Project Period (FY) |
2015-04-01 – 2018-03-31
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| Project Status |
Completed (Fiscal Year 2017)
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| Budget Amount *help |
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2017: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2016: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2015: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
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| Keywords | 燃料デブリ / フッ化 / 溶融塩電解 / ウラン / ジルコニウム / 熱重量測定 / 固溶体 / 不均化 / 溶融塩 / 溶解 / 電解 / フッ化物 / 塩化物 / 選択フッ化 / 酸化ウラン / 酸化ジルコニウム |
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| Outline of Final Research Achievements |
The basic studies for optimization of process for pyroprocess constructed by selective fluorination and molten salt electrolysis have been carried out for the treatment of fuel debris caused by the Fukushima Daiichi Nuclear Power Plant. Novel knowledge by this study is shown as follows: By using hydrogen fluoride gas, fluorination rate of the fuel debris produced in reductive atmosphere is more rapid than that produced in oxidative atmosphere. Even zirconium floride cannot be dissolved into molten fluoride at low temperature. Zirconium fluoride can be dissolved into molten chloride for electrolysis. These results can be contributed to the optimum of process design for uranium extraction selectively from fuel debris.
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Report
(4 results)
Research Products
(16 results)
