Study on extraction of rare earth elements from coal fly ash through alkali fusion – Acid leaching

• Published in: Minerals engineering Vol. 136; pp. 36 - 42
• Main Authors: Tang, Mengcheng, Zhou, Changchun, Pan, Jinhe, Zhang, Ningning, Liu, Cheng, Cao, Shanshan, Hu, Tingting, Ji, Wanshun
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 01.06.2019
• Subjects: Acid leaching; Alkali fusion; Coal fly ash; Rare earth elements; Coal fly ash; Alkali fusion; Acid leaching; Rare earth elements

•The optimum fusion temperature (860 °C) for coal fly ash is ascertained after TG-DSC analysis.•The leaching rate of REEs after alkali fusion is higher than that by direct leaching.•A two-stage process for REEs recovery from coal fly ash was established. The growing demand for rare earth elements (R...