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Sulfurization Roasting Process of Nd2O3 and Synthetic NdFeO3 with Ferric Sulfate

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Abstract

The environmental and economic recovery of rare-earth (RE) from NdFeB magnet waste is becoming increasingly important. In this study, the sulfurization possibility of two main RE-bearing phases of Nd2O3 and NdFeO3 in the fully oxidized NdFeB waste by ferric sulfate was evaluated. TG-DTA curves of the Nd2O3 and NdFeO3 sulfurization with 1.5 times of the theoretical Fe2(SO4)3·5H2O dosage showed that the temperatures range of Nd2(SO4)3 formation were 873 K to 963 K, and the starting temperature of Nd2(SO4)3 decomposition was ~ 1070 K. Specific experiments revealed by XRD and SEM-EDS analysis that Nd2O3 and NdFeO3 phases were successfully sulfated by Fe2(SO4)3·5H2O. The optimum roasting temperature was determined to be 973 K corresponding to the highest Nd leaching efficiency by the sulfurization of Nd2O3. At above 973 K, the decomposition of Nd2(SO4)3 resulted in the decrease of Nd leaching efficiency. Furthermore, the required roasting time and Fe2(SO4)3·5H2O dosage to obtain the same Nd leaching efficiency were different for the sulfurization of Nd2O3 and NdFeO3 at 973 K, and the sulfurization of NdFeO3 was more difficult than that of Nd2O3. Based on the results, an innovative method for recovering RE from NdFeB magnet waste was proposed.

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References

  1. X.J Liu, T. Xu, Q. Hao, and J. G. Cui: Rare Met. Cemented Carb., 2014, vol. 42, pp. 48–53.

    Google Scholar 

  2. Y.Y Bian, S.Q. Guo, L. Jiang, K. Tang, and W.Z. Ding: J. Sustain. Metall., 2015, vol. 1, pp. 151–60.

    Article  Google Scholar 

  3. J.P. Rabatho, W. Tongamp, Y. Takasaki, K. Haga, and A. Shibayama: J. Mater. Cycles Waste Manag., 2013, vol. 15, pp. 171–78.

    Article  CAS  Google Scholar 

  4. Y.Y Bian, S.Q. Guo, Y.L. Y.L. Xu, K. Tang, X.G. Lu, and W.Z. Ding: Rare Met., 2015, vol. 34, pp. 1–6.

    Article  Google Scholar 

  5. E.G. Polyakov, and A. S. Sibilev: Metallurgist, 2015, vol. 59, pp. 368–73.

    Article  CAS  Google Scholar 

  6. H.W. Na, Y.H. Kim, H.T. Son, I.H. Jung, H.S. Choi, and T.B. Kim: Curr. Nanosc., 2014, vol. 10, pp. 128–30.

    Article  CAS  Google Scholar 

  7. M. Itoh, K. Miura, K. Machida: J. Alloy Compd., 2009, vol. 477, pp. 484–87.

    Article  Google Scholar 

  8. T. Uda: Mater. Trans., 2002, vol. 43, pp. 55–62.

    Article  CAS  Google Scholar 

  9. M. Itoh, K. Miura, K. Machida: J. Alloy Compd., 2008, vol. 466, pp. 228–32.

    Article  Google Scholar 

  10. J. Tang, C.F. Wei, D.W. Zhao, H. Lin, and G.H. Tian: Rare Met. Cemented Carb., 2009, vol. 37, pp. 9–11.

    CAS  Google Scholar 

  11. M.A.R. Önal, C.R. Borra, M.X. Guo, B. Blanpain, and T.V. Gerven: J. Rare Earths, 2017, vol. 35, pp. 574–84.

    Article  Google Scholar 

  12. H.S Yoon, C.J Kim, K.W. Chung, S.J. Lee, A.R. Joe, Y.H. Shin, S.I. Lee, S.J. Yoo, and J.G. Kim: Korean J. Chem. Eng., 2014, vol. 31, pp. 706–11.

    Article  CAS  Google Scholar 

  13. T.V. Hoogerstraete, B. Blanpain, T.V. Gerven, and K. Binnemans: RSC Adv., 2014, vol. 4, pp. 64099.

    Article  Google Scholar 

  14. C.H. Lee, Y.J. Chen, C.H. Liao, S.R. Popuri, S.L. Tsai, and C.E. Hung: Metall. Mater. Trans. A, 2013, vol. 44, pp. 5825–33.

    Article  CAS  Google Scholar 

  15. F.P. Liu, A. Porvali, J.L. Wang, H.Q. Wang, C. Peng, B.P. Wilson, and M. Lundström: Miner. Eng., 2020, vol. 145, pp. 106097.

    Article  CAS  Google Scholar 

  16. M.A.R. Önal, C.R. Borra, M.X. Guo, B. Blanpain, and T.V. Gerven: J. Sustain. Metall., 2015, vol. 1, pp. 199–15.

    Article  Google Scholar 

  17. J. Ponou, M. Garrouste, G. Dodbiba, T.Fujita, and J.W. Ahn: Sustainability, 2019, vol. 11, pp. 3461.

    Article  CAS  Google Scholar 

  18. C.R. Borra, J. Mermans, B. Blanpain, Y. Pontikes, K. Binnemans, and T.V. Gerven: Miner. Eng., 2016, vol. 92, pp. 151–59.

    Article  CAS  Google Scholar 

  19. C. Stanton: Sulfation roasting and leaching of samarium-cobalt magnet swarf for samarium recovery, master’s thesis, Colorado School of Mines, 2016.

  20. K. Korkmaz, M. Alemrajabi, Å. Rasmuson, and K. Forsberg: J. Sustain. Metall., 2018, vol. 4, pp. 313–25.

    Article  Google Scholar 

  21. M. Firdaus, M.A. Rhamdhani, W.J. Rankin, M. Pownceby, N.A.S. Webster, A.M. D’Angelo, and K. McGregor: Corros. Sci., 2018, vol. 133, pp. 374–85.

    Article  CAS  Google Scholar 

  22. J.L. Wang, L.J. Wang, and F.P. Liu: Chin. J. Process Eng., 2020, vol. 20, pp. 921–28.

    CAS  Google Scholar 

  23. Y.J. Jiang, Y.C. Deng, W.B. Xin, and C. Guo: T. Indian I. Metals, 2020, vol. 73, pp. 703–11.

    Article  CAS  Google Scholar 

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Acknowledgments

The authors gratefully acknowledge the financial support from the Program for Young Talents of Science and Technology in Universities of Inner Mongolia Autonomous Region (Grant No. NJYT-20-B27), and the Natural Science Foundation of Inner Mongolia (Grant Nos. 2020MS05009 and 2018LH05018).

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Authors and Affiliations

  1. School of Materials and Metallurgy, Inner Mongolia University of Science and Technology, Baotou, 014010, People’s Republic of China

    Wenbin Xin, Yongchun Deng, Yinju Jiang, Jing Zhang & Di Chen

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  1. Wenbin Xin
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  2. Yongchun Deng
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Correspondence to Yinju Jiang.

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Manuscript submitted November 21, 2020; accepted April 9, 2021.

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Xin, W., Deng, Y., Jiang, Y. et al. Sulfurization Roasting Process of Nd2O3 and Synthetic NdFeO3 with Ferric Sulfate. Metall Mater Trans B 52, 2151–2162 (2021). https://doi.org/10.1007/s11663-021-02178-7

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  • DOI: https://doi.org/10.1007/s11663-021-02178-7

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