2010 Fiscal Year Final Research Report
Preparation of New Materials for Separation and Recovery of Rare Earth Metal by Utilizing Molten Salt
| Project/Area Number |
21760683
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Recycling engineering
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| Research Institution | Osaka University |
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Principal Investigator |
KONISHI Hirokazu Osaka University, 工学研究科, 助教 (60379120)
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| Project Period (FY) |
2009 – 2010
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| Keywords | 溶融塩 / 希土類金属 / リサイクル / 電気化学 / 分離 |
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| Research Abstract |
In order to investigate the probability of Ce separation from La, alloy samples were prepared by potentiostatic electrolysis at 0.55-60 V (vs. Li^+/Li) for 1 h in a molten LiCl-KCl-CeCl_3-LaCl_3 system at 723 K. From the results of ICP-AES analysis, the mass ratio of Ce/La in the alloy samples were found to be 84 at 0.51-53 V. Secondly, in order to separate Dy from Nd, an alloy sample was prepared by potentiostatic electrolysis at 0.55-85 V for 1 h in a molten LiCl-KCl-DyCl_3-NdCl_3 system at 723 K. From the result of ICP-AES analysis, the mass ratio of Dy/Nd in the alloy sample was found to be 72 at 0.65 V.
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