湿法冶金2026，Vol.45Issue(2)：208-214,7.DOI:10.13355/j.cnki.sfyj.2026.02.010
用超声强化盐酸优溶法浸出钕铁硼废料中的稀土
Extraction of Rare Earths from NdFeB Waste by Ultrasonic Enhanced Hydrochloric Acid Leaching Method
摘要
Abstract
To address the issues of long leaching time and high consumption of hydrochloric acid in the conventional hydrochloric acid leaching method for neodymium-iron-boron(NdFeB)waste,the ultrasonic-enhanced hydrochloric acid solubilization method was studied for the leaching of rare earths from it.The effects of ultrasonic power,hydrochloric acid concentration,temperature,liquid volume to solid mass ratio,leaching time,particle size and other factors on the leaching rate of rare earths were investigated,and the optimal leaching parameters were determined.The results show that ultrasonic assistance significantly enhances the leaching process.Under the optimal conditions of ultrasonic power of 60 W,hydrochloric acid concentration of 2 mol/L,temperature of 85℃,liquid volume to solid mass ratio of 10 mL/1 g,leaching time of 105 min,and particle size of-0.074 mm,the rare earth leaching rate reaches 97.94％,which is 8 percentage points higher than that of the conventional hydrochloric acid leaching method under its best conditions.The method is an efficient and feasible green process for rare earth recovery and provides a new approach for the resource utilization of NdFeB waste.关键词
超声强化/钕铁硼废料/盐酸优溶法/稀土/绿色高效/浸出Key words
ultrasonic enhancement/NdFeB waste/hydrochloric acid solubilization method/rare earth/green and efficient/leaching分类
矿业与冶金引用本文复制引用
吴琦,樊文军,张成业,张成成,张晓伟,刘中兴..用超声强化盐酸优溶法浸出钕铁硼废料中的稀土[J].湿法冶金,2026,45(2):208-214,7.基金项目
国家自然科学基金项目(51964039) （51964039）
内蒙古自治区自然科学基金重点联合基金项目(2025ZDLH011) （2025ZDLH011）
自治区直属高校基本科研业务费项目(2024XKJX011) （2024XKJX011）
科技厅-重点研发和成果转化-科技支撑黄河流域生态保护和高质量发展项目(2025YFHH0018) （2025YFHH0018）
科技厅-内蒙古自然科学基金-重点联合基金项目(2025ZDLH011) （2025ZDLH011）
一流学科科研专项-重点项目(YLXKZX-NKD-002). （YLXKZX-NKD-002）
