Recovery of Rare Earth from CeFeB Waste by Sulfation Roasting-Selective Decomposition-Water Leaching AITranslate
Abstract AITranslate
The method of sulfation roasting-selective decomposition-water leaching was used to recover rare earth from CeFeB waste,and meanwhile the reaction mechanism of CeO2 and Ce valence change in the re-covery process were investigated.The results show that the optimal recovery process conditions are sulfuric acid concentration of 14.5mol/L,sulfuric acid dosage of 2times the theoretical amount,sulfation roasting temperature and time of 300℃and 60min,and selective decomposition temperature and time of 700℃and 120min.Under the above optimized conditions,the rare earth leaching rate reaches 95.46%,the impurity Fe enters into the filter residue in the form of Fe2O3,and the rare earth oxide Nd0.20Ce0.80O1.90is ob-tained after the leaching solution is precipitated with oxalic acid and the precipitate is roasted.The products of sulfation roasting process are Ce(SO4)2,RE2(SO4)3and Fe2(SO4)3.Ce2(SO4)3,Fe2O3and indecompo-sable other RE2(SO4)3are obtained in the selective decomposition process,and the decomposition product SO3further reacts with unreacted CeO2to form Ce2(SO4)3.During the water leaching process,the water-soluble Ce2(SO4)3and RE2(SO4)3dissolve into the leachate,and the water-insoluble Fe2O3enters into the filter residue,thereby realizing the effective separation and recovery of rare earth from CeFeB waste.
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1李亚峰.磁性材料行业现状与发展前景分析[J].新材料产业,2018(7):51-54. 被引量：8
2李世健,崔振杰,李文韬,王东,王志.钕铁硼废料循环利用技术现状与展望[J].材料导报,2021,35(3):3001-3009. 被引量：12
3胡伯平.稀土永磁产业现状及展望[J].稀土信息,2018,0(11):14-17. 被引量：12
4郭小明.稀土永磁材料的发展及应用[J].江西化工,2018,34(6):242-243. 被引量：6
5刘勇,刘珍珍,刘牡丹.稀土粗精矿的低温硫酸化分解工艺[J].中国有色金属学报,2014,24(12):3147-3154. 被引量：12
6杨瑛,杨汝栋.硫酸铈水合物的热分解行为及动力学研究[J].中国稀土学报,1993,11(4):293-296. 被引量：3
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DOI：
Chinese Library Classification Number:TF845[冶金工程—有色金属冶金]
Citation Information:
The method of sulfation roasting-selective decomposition-water leaching was used to recover rare earth from CeFeB waste,and meanwhile the reaction mechanism of CeO2 and Ce valence change in the re-covery process were investigated.The results show that the optimal recovery process conditions are sulfuric acid concentration of 14.5mol/L,sulfuric acid dosage of 2times the theoretical amount,sulfation roasting temperature and time of 300℃and 60min,and selective decomposition temperature and time of 700℃and 120min.Under the above optimized conditions,the rare earth leaching rate reaches 95.46%,the impurity Fe enters into the filter residue in the form of Fe2O3,and the rare earth oxide Nd0.20Ce0.80O1.90is ob-tained after the leaching solution is precipitated with oxalic acid and the precipitate is roasted.The products of sulfation roasting process are Ce(SO4)2,RE2(SO4)3and Fe2(SO4)3.Ce2(SO4)3,Fe2O3and indecompo-sable other RE2(SO4)3are obtained in the selective decomposition process,and the decomposition product SO3further reacts with unreacted CeO2to form Ce2(SO4)3.During the water leaching process,the water-soluble Ce2(SO4)3and RE2(SO4)3dissolve into the leachate,and the water-insoluble Fe2O3enters into the filter residue,thereby realizing the effective separation and recovery of rare earth from CeFeB waste.
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| GB/T 7714-2015 | [1] LI Yu-hang, DENG Yong-chun, JIANG Yin-ju, et al. Recovery of Rare Earth from CeFeB Waste by Sulfation Roasting-Selective Decomposition-Water Leaching[J]. Rare Metals and Cemented Carbides, 2022(1): 1-5. |
| MLA | [1] LI Yu-hang, et al., "Recovery of Rare Earth from CeFeB Waste by Sulfation Roasting-Selective Decomposition-Water Leaching." Rare Metals and Cemented Carbides, no. 1, 2022, pp. 1-5. |
| APA | [1] LI Yu-hang, DENG Yong-chun, JIANG Yin-ju, XIN Wen-bin, TANG Jia-yue, & LIANG Yu-yu. (2022). Recovery of Rare Earth from CeFeB Waste by Sulfation Roasting-Selective Decomposition-Water Leaching. Rare Metals and Cemented Carbides(1), 1-5. |
| IEEE | [1] LI Yu-hang, DENG Yong-chun, JIANG Yin-ju, XIN Wen-bin, TANG Jia-yue, and LIANG Yu-yu, "Recovery of Rare Earth from CeFeB Waste by Sulfation Roasting-Selective Decomposition-Water Leaching," Rare Metals and Cemented Carbides, no. 1, pp. 1-5, 2022. keywords: {rare earth recovery;CeFeB waste;sulfation roasting;selective decomposition;water leaching;process optimization;reaction mechanism} |