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Soda-Ash Roasting Behavior of Ludwigite Ore Under Different Oxygen Concentrations

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Characterization of Minerals, Metals, and Materials 2024 (TMS 2024)

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Abstract

Efficient and comprehensive utilization of the ludwigite ore in China has an important strategic significance. However, the significant challenge is the development of highly efficient boron and iron separation process. Soda-ash roasting proves to be a facile approach for boron activation and extraction, wherein magnetite frequently was converted to hematite, which affects the subsequent recovery of iron. This work investigated the phase transformations, microstructure evolution and magnetism changes of soda-ash roasted ludwigite ore under different O2 concentrations at 1123 K. Results indicate that Fe3O4 was not obviously oxidized to Fe2O3 but reacted with MgO to form MgxFe3−xO4 and MgyFe1−yO, when the O2 concentration is not more than 5.0 vol%. As the O2 concentration further increased, Fe3O4 was converted to Fe2O3 and MgFe2O4.

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References

  1. You J, Wang J, Luo J, Peng Z, Rao M, Li G (2022) A facile route to the value-added utilization of ludwigite ore: boron extraction and MxMg1−xFe2O4 spinel ferrites preparation. J Clean Prod 375:134206. https://doi.org/10.1016/j.jclepro.2022.134206

  2. Ye L, Peng Z, Tian R, Tang H, Zhang J, Rao M, Li G (2022) A novel process for highly efficient separation of boron and iron from ludwigite ore based on low-temperature microwave roasting. Powder Technol 410:117848. https://doi.org/10.1016/j.powtec.2022.117848

    Article  CAS  Google Scholar 

  3. Wang G, Wang J, Ding Y, Ma S, Xue Q (2012) New separation method of boron and iron from ludwigite based on carbon bearing pellet reduction and melting technology. ISIJ Int 52(1):45–51. https://doi.org/10.2355/isijinternational.52.45

    Article  Google Scholar 

  4. Liu S, Cui C, Zhang X (1998) Pyrometallurgical separation of boron from iron in ludwigite ore. ISIJ Int 38(10):1077–1079. https://doi.org/10.2355/isijinternational.38.1077

    Article  CAS  Google Scholar 

  5. Fu X, Chu M, Gao L, Liu Z (2018) Stepwise recovery of magnesium from low-grade ludwigite ore based on innovative and clean technological route. Trans Nonferr Metal Soc 28(11):2383–2394. https://doi.org/10.1016/S1003-6326(18)64884-8

    Article  CAS  Google Scholar 

  6. Li G, Liang B, Rao M, Zhang Y, Jiang T (2014) An innovative process for extracting boron and simultaneous recovering metallic iron from ludwigite ore. Miner Eng 56:57–60. https://doi.org/10.1016/j.mineng.2013.10.030

    Article  CAS  Google Scholar 

  7. Liang B, Li G, Rao M, Peng Z, Zhang Y, Jiang T (2017) Water leaching of boron from soda-ash-activated ludwigite ore. Hydrometallurgy 167:101–106. https://doi.org/10.1016/j.hydromet.2016.11.004

    Article  CAS  Google Scholar 

  8. Zhang X, Li G, You J, Wang J, Luo J, Duan J, Zhang T, Peng Z, Rao M, Jiang T (2019) Extraction of boron from ludwigite ore: mechanism of soda-ash roasting of lizardite and szaibelyite. Minerals 9(9):533. https://doi.org/10.3390/min9090533

    Article  CAS  Google Scholar 

  9. Zhu Z, You J, Zhang X, Li G, Wang J, Luo J, Rao M, Peng Z, Jiang T (2020) Recycling excessive alkali from reductive soda ash roasted ludwigite ore: toward a zero-waste approach. ACS Sustain Chem Eng 8(13):5317–5327. https://doi.org/10.1021/acssuschemeng.0c00582

    Article  CAS  Google Scholar 

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Acknowledgements

This work was supported by the National Key Research and Development Program of China (2020YFC1909803), the Basic Science Center Project for the National Natural Science Foundation of China (Number 72088101), and the Graduate Research and Innovative Project of Central South University (506021739).

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Authors and Affiliations

  1. School of Minerals Processing and Bioengineering, Central South University, Changsha, 410083, Hunan, China

    Jinxiang You, Mingjun Rao, Zhiwei Peng & Guanghui Li

Authors
  1. Jinxiang You
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  2. Mingjun Rao
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  3. Zhiwei Peng
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  4. Guanghui Li
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Corresponding author

Correspondence to Mingjun Rao .

Editor information

Editors and Affiliations

  1. Central South University, Changsha, China

    Zhiwei Peng

  2. Baowu Ouyeel Co. Ltd., Shanghai, China

    Mingming Zhang

  3. CanmetMATERIALS, Hamilton, ON, Canada

    Jian Li

  4. Michigan Technological University, Houghton, MI, USA

    Bowen Li

  5. Military Institute of Engineering, Rio de Janeiro, Brazil

    Sergio Neves Monteiro

  6. Chem Service Inc., West Chester, PA, USA

    Rajiv Soman

  7. Michigan Technological University, Houghton, MI, USA

    Jiann-Yang Hwang

  8. Middle East Technical University, Ankara, Türkiye

    Yunus Eren Kalay

  9. University of New South Wales, Canberra, ACT, Australia

    Juan P. Escobedo-Diaz

  10. Los Alamos National Laboratory, Los Alamos, NM, USA

    John S. Carpenter

  11. Army Research Office, Durham, NC, USA

    Andrew D. Brown

  12. Amman, Jordan

    Shadia Ikhmayies

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You, J., Rao, M., Peng, Z., Li, G. (2024). Soda-Ash Roasting Behavior of Ludwigite Ore Under Different Oxygen Concentrations. In: Peng, Z., et al. Characterization of Minerals, Metals, and Materials 2024. TMS 2024. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-031-50304-7_9

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