Electrochemical separation of rare earth from ND magnet scraps

Hirokazu Konishi, Hideki Ono, Yuichiro Koizumi, Tetsuo Oishi, Toshiyuki Nohira

研究成果: 書籍の章/レポート/会議録会議への寄与査読

抄録

The 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 mass ratio of Dy/Nd+Pr in the alloy sample was the highest, i.e., 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 disappeared. 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 Fe dissolved in the bath. Finally, cathodic potentiostatic electrolysis was conducted at 0.67 V for 24 h using a Ni plate. The mass ratio of Dy/Nd in the alloy sample was found about 30 for 24 h.

本文言語英語
ホスト出版物のタイトルICS 2018 - 7th International Congress on Science and Technology of Steelmaking
ホスト出版物のサブタイトルThe Challenge of Industry 4.0
出版社Associazione Italiana di Metallurgia
ISBN(電子版)9788898990146
出版ステータス出版済み - 2018
イベント7th International Congress on Science and Technology of Steelmaking, ICS 2018 - Venice, イタリア
継続期間: 2018/06/132018/06/15

出版物シリーズ

名前ICS 2018 - 7th International Congress on Science and Technology of Steelmaking: The Challenge of Industry 4.0

学会

学会7th International Congress on Science and Technology of Steelmaking, ICS 2018
国/地域イタリア
CityVenice
Period2018/06/132018/06/15

ASJC Scopus 主題領域

  • 金属および合金

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