Abstract
The Dy-Nd-Pr-Ni alloy sample was prepared by cathodic potentiostatic electrolysis at 0.65 V (vs. Li+/Li) for 1 h using a Ni plate in a molten LiCl-KCl-DyCl3−NdCl3−PrCl3 system at 723 K. The highest mass ratio (Dy/Nd+Pr) in the alloy sample was observed to be 50 at 0.65 V. Anodic potentiostatic electrolysis at 2.20 V for 12 h was conducted using the Nd-Fe-B magnet electrode in a molten LiCl-KCl system. All elements were almost dissolved from the magnet, and the original form of the magnet disintegrated. After anodic potentiostatic electrolysis at 2.20 V, cathodic potentiostatic electrolysis was conducted at 1.00 V for 5 h using a Mo plate in order to remove the dissolved Fe from the bath. Finally, cathodic potentiostatic electrolysis was conducted at 0.65 V for 12 h using a Ni plate. The mass ratio of Dy/Nd in the alloy sample was determined to be about 18.
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© 2015 TMS (The Minerals, Metals & Materials Society)
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Konishi, H., Ono, H., Takeuchi, E., Nohira, T., Oishi, T. (2015). Electrochemical Separation of Dy and Nd From Nd Magnet Scrap in a Molten LiCl-KCl. In: Yurko, J.A., et al. EPD Congress 2015. Springer, Cham. https://doi.org/10.1007/978-3-319-48214-9_33
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DOI: https://doi.org/10.1007/978-3-319-48214-9_33
Publisher Name: Springer, Cham
Print ISBN: 978-3-319-48609-3
Online ISBN: 978-3-319-48214-9
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