ZnCl2: A Green Brønsted Acid for Selectively Recovering Rare Earth Elements from Spent NdFeB Permanent Magnets

The spent neodymium–iron–boron (NdFeB) magnet is a highly valuable secondary resource of rare earth elements (REEs). Hydrometallurgical processes are widely used in recovering REEs from spent NdFeB magnets, but they will consume large amounts of organic chemicals, leading to severe environmental pol...

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Veröffentlicht in:	Environmental science & technology 2022-04, Vol.56 (7), p.4404-4412
Hauptverfasser:	Ding, Anting, Liu, Chuanying, Zhang, Xingwang, Lei, Lecheng, Xiao, Chengliang
Format:	Artikel
Sprache:	eng
Schlagworte:	Acidity Boron Chemical precipitation Energy consumption Ferric oxide Hydrometallurgy Iron Leaching Neodymium Organic chemicals Organic chemistry Oxalic acid Permanent magnets Rare earth elements Route selection Separation Trace elements Treatment and Resource Recovery Zinc chloride Zinc salts
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