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Rare-Earth Elements Recovery from Nd-Fe-B Hard Magnets by Hydrometallurgical Processes

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Extraction 2018

Part of the book series: The Minerals, Metals & Materials Series ((MMMS))

Abstract

In this study, a hydrometallurgical process was evaluated for the recovery of Nd from a Nd-Fe-B magnet. Each leaching test was performed at the solid (weight) to liquid (volume) ratio of 1:50 and was mixed at 400 rpm at ambient temperature . The effects of 3 different acids (HCl, HNO3, and H2SO4) on the extraction of Nd were investigated and H2SO4 was found to be more effective than other acid solutions. Under the optimal conditions, pregnant leach solution was produced with H2SO4 for subsequent Nd precipitation testing . Each precipitation test was carried out using 100 mL of feed solution mixed at 600 rpm at 25 °C. NaOH and H2C2O4 were used for Nd precipitation . The highest Nd was precipitated as Nd2(C2O4)3·10H2O with C2H2O4 at 20 min.

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Author information

Authors and Affiliations

  1. Faculty of Engineering, Department of Metallurgical and Materials Engineering, Dokuz Eylül University, 35397, Buca, Izmir, Turkey

    Haydar Güneş, Hüseyin Eren Obuz & Murat Alkan

  2. The Graduate School of Natural and Applied Sciences, Dokuz Eylül University, 35397, Buca, Izmir, Turkey

    Haydar Güneş & Hüseyin Eren Obuz

  3. Department of Materials Science and Engineering, Izmir Institute of Technology, 35430, Urla, Izmir, Turkey

    Ezgi Oğur & Furkan Çapraz

Authors
  1. Haydar Güneş
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  2. Hüseyin Eren Obuz
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  3. Ezgi Oğur
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  4. Furkan Çapraz
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  5. Murat Alkan
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Corresponding author

Correspondence to Murat Alkan .

Editor information

Editors and Affiliations

  1. Kingston Process Metallurgy Inc., Kingston, Canada

    Boyd R. Davis

  2. Missouri University of Science and Technology, Rolla, USA

    Michael S. Moats

  3. Rio Tinto Kennecott Utah Copper Corporation, South Jordan, USA

    Shijie Wang

  4. RHI Magnesita, Leoben, Austria

    Dean Gregurek

  5. BBA Inc., Montreal, Canada

    Joël Kapusta

  6. Extractive Metallurgy Consultant, Kingston, Canada

    Thomas P. Battle

  7. Missouri University of Science and Technology, Rolla, USA

    Mark E. Schlesinger

  8. Aurubis, Hamburg, Germany

    Gerardo Raul Alvear Flores

  9. University of Queensland, Queensland, Australia

    Evgueni Jak

  10. XPS-Glencore, Falconbridge, Canada

    Graeme Goodall

  11. University of Utah, Salt Lake City, USA

    Michael L. Free

  12. University of British Columbia, Vancouver, Canada

    Edouard Asselin

  13. University of Lorraine, Vandœuvre-lès-Nancy, France

    Alexandre Chagnes

  14. University of British Columbia, Vancouver, Canada

    David Dreisinger

  15. Newmont Mining, Elko, USA

    Matthew Jeffrey

  16. University of Arizona, Tucson, USA

    Jaeheon Lee

  17. Miller Metallurgical Services Pty Ltd., Brisbane, Australia

    Graeme Miller

  18. University of Cape Town, Rondebosch, Australia

    Jochen Petersen

  19. Universidade Federal de Minas Gerais, Belo Horizonte, Brazil

    Virginia S. T. Ciminelli

  20. Shanghai University, Shanghai, China

    Qian Xu

  21. MetNetH20 Inc., Peterborough, Canada

    Ronald Molnar

  22. Hatch, Mississauga, Canada

    Jeff Adams

  23. University of British Columbia, Vancouver, Canada

    Wenying Liu

  24. SGS Minerals, Lakefield, Canada

    Niels Verbaan

  25. J.R. Goode and Associates Metallurgical Consulting, Toronto, Canada

    John Goode

  26. Avalon Rare Metals Inc., Toronto, Canada

    Ian M. London

  27. University of Toronto, Toronto, Canada

    Gisele Azimi

  28. SGS Minerals, Lakefield, Canada

    Alex Forstner

  29. Newmont Mining, Greenwood Village, USA

    Ronel Kappes

  30. Newmont Mining Corporation, Greenwood village, USA

    Tarun Bhambhani

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Cite this paper

Güneş, H., Obuz, H.E., Oğur, E., Çapraz, F., Alkan, M. (2018). Rare-Earth Elements Recovery from Nd-Fe-B Hard Magnets by Hydrometallurgical Processes. In: Davis, B., et al. Extraction 2018. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-319-95022-8_239

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