A comprehensive review on recycling of critical raw materials from spent neodymium iron boron (NdFeB) magnet

A Kumari, SK Sahu - Separation and Purification Technology, 2023 - Elsevier
The present paper focuses on the importance of critical raw materials (CRMs) of green
energy technologies especially, wind mill and electric vehicle (EVs) sectors. The …

Technologies of recycling REES and iron from NdFeB scrap

F **ao, W Hu, J Zhao, H Zhu - Metals, 2023 - mdpi.com
In recent years, under the background of global low-carbon development, the production of
NdFeB magnets has increased dramatically. With the end of magnet life, a large number of …

[HTML][HTML] On the pre-treatment for recycling spent NdFeB permanent magnets: from disassembling, characterisation to de-coating

CP Couto, JJMM van de Ven, Y Yang… - Sustainable Materials …, 2024 - Elsevier
An evaluation of neodymium‑iron‑boron permanent magnets (NdFeB PMs) from different
end-of-life products, as a secondary resource of rare-earth elements (REEs), is presented …

Reforming Magnet Waste to Prussian Blue for Sustainable Sodium-Ion Batteries

QY Li, C Xu, YR Liang, Z Yang, N LeGe… - … Applied Materials & …, 2022 - ACS Publications
Increasing generation of permanent magnet waste has resulted in an urgent need to
preserve finite resources. Reforming these wastes as feedstock to produce renewables is an …

Membrane distillation of a waste stream from neodymium‑iron‑boron scrap recovery: Performance and scaling mitigation

Y Hu, LF Dumée, M **e, CY Loh, G Chen, M Huang… - Desalination, 2023 - Elsevier
Abstract Neodymium‑iron‑boron (NdFeB) scraps contained 20–30% rare earth elements
such as neodymium, iron, boron, dysprosium, and praseodymium, which are valuable …

Rare earth recovery from fluoride molten-salt electrolytic slag by sodium carbonate roasting-hydrochloric acid leaching

H Wu, H Yan, Y Liang, S Qiu, X Zhou, D Zhu, T Qiu - Journal of Rare Earths, 2023 - Elsevier
Fluorinated rare earth molten-salt electrolytic slag contains a considerable amount of rare
earth elements, as well as a variety of heavy metals and fluorides that cause environmental …

An acid-free process for selective REE recovery from spent NdFeB magnets by room-temperature electrolysis

Z Zhihan, W Zhi, W Dong, M Rui, X Wanhai, L Yong… - Green …, 2023 - pubs.rsc.org
Spent NdFeB magnets are valuable secondary resources of rare earth elements (REEs).
However, their conventional recovery processes require high-temperature roasting and acid …

Selective extraction and separation of REEs from NdFeB magnets scrap using co-chlorination and water leaching

J Wu, D Wang, C Ye, Z Wang, X Hu - Separation and Purification …, 2023 - Elsevier
An approach of co-chlorination followed by water leaching to achieve the selective
extraction of rare earth elements (REEs) from NdFeB magnets scrap (scrap) was studied. Co …

P350-N235 synergistic extraction system used for the recovery of Nd (III) from waste NdFeB magnets

R Wu, R Liu, X Liu, J Zhang, W Xue, Y Yang - Separation and Purification …, 2023 - Elsevier
The recovery of Nd (III) from NdFeB permanent magnets is gaining increasing attention. In
the rare earth elements separation industry, wastewater produced through saponification …

Recovery of neodymium and iron from NdFeB waste by combined electrochemical–hydrometallurgical process

F **ao, W Hu, Z Zhang, B Li, H Zhu - Separation and Purification …, 2025 - Elsevier
The recovery of rare-earth elements and Fe from NdFeB waste has significant potential.
However, conventional hydrometallurgical and pyrometallurgical processes are energy …