Recycling Bonded Nd-Fe-B Magnet Wastes: Recycle, Repreparation, and Life Cycle Assessment

被引：2

作者：

Zhu, Peihong ^{[1
]}

Liu, Min ^{[1
]}

Yang, Yaxuan ^{[1
]}

Gao, Ke ^{[1
]}

Xuan, Yueheng ^{[2
]}

Liu, Weiqiang ^{[1
]}

Lu, Qingmei ^{[1
]}

Ding, Yue ^{[3
]}

Zhang, Baoguo ^{[3
]}

Meng, Hui ^{[4
]}

Wei, Qifeng ^{[4
]}

Yue, Ming ^{[1
]}

机构：

[1] Beijing Univ Technol, Coll Mat Sci & Engn, Key Lab Adv Funct Mat, Minist Educ China, Beijing 100124, Peoples R China

[2] Dalian Univ Foreign Languages, Sch Software, Dalian 116044, Peoples R China

[3] Hangzhou Kede Magnet Components Co Ltd, Hangzhou 311500, Peoples R China

[4] Hangzhou Foresee Technol Co Ltd, Hangzhou 311500, Peoples R China

来源：

ACS SUSTAINABLE CHEMISTRY & ENGINEERING | 2024年 / 12卷 / 34期

基金：

国家重点研发计划;

关键词：

bonded Nd-Fe-B magnet waste; short-processrecycling; repreparation magnets; magnetic property; life cycle assessment; EPOXY-RESIN; CORROSION BEHAVIOR; COMPOSITES; RECOVERY; SCRAP; SIZE;

D O I：

10.1021/acssuschemeng.4c03639

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

At present, the research on the recycling of bonded Nd-Fe-B magnet wastes is primarily conducted at the laboratory level. This study presents the kilogram-scale recycling of waste bonded Nd-Fe-B magnets using a NaOH-ethylene glycol solution. The impact of reaction temperature and catalyst concentration on the recycling process at this scale was investigated, and regenerated bonded Nd-Fe-B magnets were prepared from recycled magnetic powders. The magnetic properties of the recycled powders and regenerated magnets closely resembled those of the original products. Additionally, a life cycle assessment was conducted to analyze the production and recycling process of bonded Nd-Fe-B magnetic powders, revealing lower environmental impacts for the recycling process compared to production. Therefore, successful scale-up recycling through a NaOH-ethylene glycol solution demonstrates potential commercial and environmental opportunities for bonded Nd-Fe-B magnet waste.

引用

页码：12858 / 12868

页数：11

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