Recovery of Rare Earths from End-of-Life NdFeB Permanent Magnets from Wind Turbines.

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Tác giả: Lorena Alcaraz, Gorka Barquero-Carmona, Alba Berja, Félix A López, Adrián Quesada, Olga Rodríguez-Largo

Ngôn ngữ: eng

Ký hiệu phân loại: 331.7 Labor by industry and occupation

Thông tin xuất bản: Germany : ChemSusChem , 2025

Mô tả vật lý:

Bộ sưu tập: NCBI

ID: 217725

This work aims to recover rare earths from wind turbines NdFeB magnets through pyrometallurgical and hydrometallurgical techniques. First, a NdFeB hydride powder is obtained by decrepitation with hydrogen. Subsequently, this powder was subjected to a chlorination roasting process and successive leaching with water to bring the metals into solution. This was followed by a liquid-liquid extraction to remove the iron and purify the rare earth solution. For this purpose, Aliquat 336 diluted in Solvesso was selected as the iron selective extraction agent. As a single extraction was not enough for complete iron removal, a second Fe extraction step was carried out. This second extraction step was performed using the restored organic phase. This restoration was achieved by treating the organic phase with Na
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