中国物理B ›› 2019, Vol. 28 ›› Issue (7): 77506-077506.doi: 10.1088/1674-1056/28/7/077506

所属专题: TOPICAL REVIEW — Magnetism, magnetic materials, and interdisciplinary research

• TOPICAL REVIEW—Magnetism, magnetic materials, and interdisciplinary research • 上一篇    下一篇

Progress in recycling of Nd-Fe-B sintered magnet wastes

Ming Yue(岳明), Xiaowen Yin(尹小文), Weiqiang Liu(刘卫强), Qingmei Lu(路清梅)   

  1. College of Materials Science and Engineering, Key Laboratory of Advanced Functional Materials (Ministry of Education), Beijing University of Technology, Beijing, 100124, China
  • 收稿日期:2019-05-03 出版日期:2019-07-05 发布日期:2019-07-05
  • 通讯作者: Ming Yue E-mail:yueming@bjut.edu.cn
  • 基金资助:
    Project supported by the National Key Research and Development Program of China (Grant No. 2018YFC1903405) and Advanced Subject of Beijing, China (Grant No. PXM2019_014204_500031).

Progress in recycling of Nd-Fe-B sintered magnet wastes

Ming Yue(岳明), Xiaowen Yin(尹小文), Weiqiang Liu(刘卫强), Qingmei Lu(路清梅)   

  1. College of Materials Science and Engineering, Key Laboratory of Advanced Functional Materials (Ministry of Education), Beijing University of Technology, Beijing, 100124, China
  • Received:2019-05-03 Online:2019-07-05 Published:2019-07-05
  • Contact: Ming Yue E-mail:yueming@bjut.edu.cn
  • Supported by:
    Project supported by the National Key Research and Development Program of China (Grant No. 2018YFC1903405) and Advanced Subject of Beijing, China (Grant No. PXM2019_014204_500031).

摘要: Significant efforts have been put into the recycling of bulk Nd-Fe-B sintered magnet wastes around the world in the past decade because bulk Nd-Fe-B sintered magnet wastes are valuable secondary rare-earth resources. There are two major facts behind the efforts. First, the waste magnets contain total rare-earth content as high as more than 30 wt.%, which is higher than most natural rare-earth mines. Second, the waste magnets maintain the physical and chemical properties of the original magnets even with deterioration of the properties on surfaces due to corrosion and contamination. In this review, various techniques for recycling bulk Nd-Fe-B sintered magnet wastes, the overall properties of the recycled Nd-Fe-B sintered magnets, and the mass production of recycled magnets from the wastes are reviewed.

关键词: Nd-Fe-B sintered magnet, rare-earth resource recycling

Abstract: Significant efforts have been put into the recycling of bulk Nd-Fe-B sintered magnet wastes around the world in the past decade because bulk Nd-Fe-B sintered magnet wastes are valuable secondary rare-earth resources. There are two major facts behind the efforts. First, the waste magnets contain total rare-earth content as high as more than 30 wt.%, which is higher than most natural rare-earth mines. Second, the waste magnets maintain the physical and chemical properties of the original magnets even with deterioration of the properties on surfaces due to corrosion and contamination. In this review, various techniques for recycling bulk Nd-Fe-B sintered magnet wastes, the overall properties of the recycled Nd-Fe-B sintered magnets, and the mass production of recycled magnets from the wastes are reviewed.

Key words: Nd-Fe-B sintered magnet, rare-earth resource recycling

中图分类号:  (Permanent magnets)

  • 75.50.Ww