Efficient separation and recovery of neodymium through volatilization in the recycling process of spent Nd-Fe-B magnets

doi:10.1016/j.vacuum.2024.113438

IMR OpenIR

	Efficient separation and recovery of neodymium through volatilization in the recycling process of spent Nd-Fe-B magnets
	Yang, Pengju 1,2; Zhang, Shifan 1,3; Zheng, Wentao 3; He, Jie 1,2
通讯作者	He, Jie(jiehe@imr.ac.cn)
	2024-09-01
发表期刊	VACUUM
ISSN	0042-207X
卷号	227 页码:12
摘要	Metal Pb can be used to selectively extract Nd from Nd-Fe-B magnet scraps. However, the separation of Nd from the recycled Pb-Nd alloys has become a new problem. In this work, the separation of Pb from the Pb-Nd alloys by vacuum distillation was investigated. The thermodynamic analysis based on the saturation vapor pressure and separation coefficient indicates that the component Pb is able to be separated from the Pb-Nd alloys by vacuum distillation. The effects of the distillation temperature and duration on the volatilization separation of Pb from the Pb-Nd alloy have been clarified, and the dynamic mechanism of the distillation separation was analyzed. The results show that the increase in the distillation temperature and duration can facilitate the separation between the components Pb and Nd in the Pb-Nd alloys. When the Pb-30 wt%Nd alloy was distilled at 1573 K and 0.1-5 Pa for 210 min, the removal rate of the Pb can reach more than 99.99 %, and the Nd content of the distillation residue was determined to be more than 99.41 wt%. This work provides a new and clean route for the separation and recycling of the rare earth metal Nd in the recycling process of spent Nd-Fe-B magnets.
关键词	Rare earth neodymium Recycling Pb-Nd alloys Separation Vacuum distillation
资助者	National Natural Science Foundation of China ; Scientific Instrument Developing Project of the Chinese Academy of Sciences ; Space Application System of China Manned Space Program ; Guangxi Science and Technology Major Program
DOI	10.1016/j.vacuum.2024.113438
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[51974288] ; National Natural Science Foundation of China[52174280] ; Scientific Instrument Developing Project of the Chinese Academy of Sciences[YJKYYQ20210012] ; Space Application System of China Manned Space Program[KJZ-YY-NCL06] ; Guangxi Science and Technology Major Program[AA23023032]
WOS研究方向	Materials Science ; Physics
WOS类目	Materials Science, Multidisciplinary ; Physics, Applied
WOS记录号	WOS:001264359500001
出版者	PERGAMON-ELSEVIER SCIENCE LTD
引用统计	被引频次：1[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/188115
专题	中国科学院金属研究所
通讯作者	He, Jie
作者单位	1.Chinese Acad Sci, Inst Met Res, Shi Changxu Innovat Ctr Adv Mat, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 3.Shenyang Univ Technol, Coll Mat Sci & Engn, Shenyang 110870, Peoples R China
推荐引用方式 GB/T 7714	Yang, Pengju,Zhang, Shifan,Zheng, Wentao,et al. Efficient separation and recovery of neodymium through volatilization in the recycling process of spent Nd-Fe-B magnets[J]. VACUUM,2024,227:12.
APA	Yang, Pengju,Zhang, Shifan,Zheng, Wentao,&He, Jie.(2024).Efficient separation and recovery of neodymium through volatilization in the recycling process of spent Nd-Fe-B magnets.VACUUM,227,12.
MLA	Yang, Pengju,et al."Efficient separation and recovery of neodymium through volatilization in the recycling process of spent Nd-Fe-B magnets".VACUUM 227(2024):12.