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Microwave and Conventional Carbothermic Reduction of Chromite Ore: A Comparison

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

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

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Abstract

The reduction of chromite ore is an important step in the production of ferrochromium alloy and stainless steel. The comparison between conventional and microwave reduction of chromite ore was investigated in this study with a focus on the effect of reduction time. Compared to conventional reduction, microwave reduction of chromite ore was more efficient by breaking the stable chromium-containing spinel structure, improving reduction performance of the ore with generation of large Fe–Cr particles. By fixing reduction temperature of 1100 °C and C/O molar ratio of 1.2, the metallization degrees of chromium and iron of the briquettes constituted by chromite ore and coke after microwave reduction increased from 91.57 and 83.03% to 93.53 and 85.78%, respectively, with increasing time from 0 to 120 min, which were higher than those obtained by conventional reduction for 4 h (7.00% for chromium and 67.26% for iron).

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Acknowledgements

This work was partially supported by the National Natural Science Foundation of China under Grant 72088101.

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Authors and Affiliations

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

    Huimin Tang, Zhiwei Peng, Tianle Yin, Lei Ye, Qiang Zhong & Mingjun Rao

Authors
  1. Huimin Tang
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  2. Zhiwei Peng
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  3. Tianle Yin
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  4. Lei Ye
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  5. Qiang Zhong
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  6. Mingjun Rao
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Corresponding author

Correspondence to Zhiwei Peng .

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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© 2024 The Minerals, Metals & Materials Society

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Tang, H., Peng, Z., Yin, T., Ye, L., Zhong, Q., Rao, M. (2024). Microwave and Conventional Carbothermic Reduction of Chromite Ore: A Comparison. 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_6

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