Separation and recovery process for rare earth metals using molten salt electrolysis and liquid metals
| Project/Area Number |
25281047
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Partial Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Environmental conscious materials and recycle
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| Research Institution | Osaka University |
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Principal Investigator |
Konishi Hirokazu 大阪大学, 工学(系)研究科(研究院), 助教 (60379120)
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| Project Period (FY) |
2013-04-01 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2016)
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| Budget Amount *help |
¥19,500,000 (Direct Cost: ¥15,000,000、Indirect Cost: ¥4,500,000)
Fiscal Year 2015: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Fiscal Year 2014: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2013: ¥13,910,000 (Direct Cost: ¥10,700,000、Indirect Cost: ¥3,210,000)
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| Keywords | リサイクル / 希土類金属 / 溶融塩 / 液体金属 / 電解プロセス / 電気化学 / レアアース / 有価物回収 |
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| Outline of Final Research Achievements |
We proposed new separation and recovery process for rare earth metals using molten salt electrolysis and liquid metals. The alloy samples were prepared by potentiostatic electrolysis using liquid Bi, Sn and Zn electrodes in molten LiCl-KCl added DyCl3 and NdCl3 at 723 K. The formation of Dy-Nd-Zn, Dy-Nd-Sn, Dy-Nd-Bi alloys were confirmed. The atomic ratios of Dy/Nd in Bi, Zn alloy samples were about 2. Rare earth and Fe could be separated by controlling the area of liquid electrodes or applied potential. Dy and Nd of Nd-Fe-B magnets in liquid Sn electrodes could be dissolved into the molten salt as RE ions.
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Report
(5 results)
Research Products
(13 results)
