Mechanical activation induced treatment for the synergistic recovery of valuable elements from spent NdFeB magnets

Bibliographische Detailangaben
Veröffentlicht in:	Waste management (New York, N.Y.). - 1999. - 178(2024) vom: 15. März, Seite 76-84
1. Verfasser:	Wu, Jian (VerfasserIn)
Weitere Verfasser:	Wang, Dong, Zhang, Zhihan, Ye, Chunlin, Wang, Zhi, Hu, Xiaojun
Format:	Online-Aufsatz
Sprache:	English
Veröffentlicht:	2024
Zugriff auf das übergeordnete Werk:	Waste management (New York, N.Y.)
Schlagworte:	Journal Article Mechanical activation Mechanochemical reactions Recovery Spent NdFeB magnets Synergistic Neodymium 2I87U3734A Metals, Rare Earth Water mehr... 059QF0KO0R Cobalt 3G0H8C9362

Beschreibung
Zusammenfassung:	Copyright © 2024 Elsevier Ltd. All rights reserved. The efficient and sustainable recovery of rare earth resources from spent NdFeB magnets has received considerable and increasing attention. However, the currently prevalent NdFeB magnets recovery techniques focus only on the recovery for rare earth elements (REEs), some of which also recover cobalt (Co) or boron (B). Herein, a simple mechanochemical strategy was proposed to recover REE, Co, and B from spent NdFeB magnets by mixing the NdFeB magnets powder and FeCl3 6H2O through the grinding-roasting-water leaching technological route. The results indicated high leaching efficiencies of 98.94 % for REEs, 99.99 % for Co, and 93.36 % for B from the NdFeB magnets. Additionally, iron remains in the leaching residue as iron oxide (96.73 wt %), achieving the complete separation of REEs, Co, B, and Fe. This mechanochemical based technology offers a green and efficient recovery process, facilitating more effective synergistic recovery of valuable elements from spent NdFeB magnets
Beschreibung:	Date Completed 18.03.2024 Date Revised 18.03.2024 published: Print-Electronic Citation Status MEDLINE
ISSN:	1879-2456
DOI:	10.1016/j.wasman.2024.02.008