Recovery of high-value rare earth elements from waste NdFeB by the water-soluble ammonium salt [Hbet]Cl

被引：0
|
作者：
Du Chang
Ma Shuai
Xie Meiying
Yang Fan
Zhao Zhigang
Chen Yun
Ma ying
机构：
来源：
China Rare Earth Information | 2022年 / 28卷 / 04期
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D O I：
暂无
中图分类号：
TF845 [稀土金属冶炼]; X705 [固体废物的处理与利用];
学科分类号：
080603 ; 083002 ;
摘要：
This paper proposes a new integrated method for recycling permanent magnet waste by betaine hydrochloride ([Hbet]CI) solution extraction.The orthogonal experiment method was used to analyze four factors in the leaching process to explore the primary and secondary factors influencing the leaching results.The following optimum leaching conditions were obtained:leaching temperature of 200℃,leaching time of 8 h,lixiviant [Hbet]CI concentration of 0.2 mol/L,and solid-liquid ratio of 1:150 g/ml.These conditions yielded the optimum leaching results of 99.81%Pr,97.05%Nd,95.51%Gd,56.24%Ce and 0.20%Fe,
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页码：30 / 30
页数：1
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