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Research on Impurity Removal of Low Grade Bauxite

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Light Metals 2018 (TMS 2018)

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

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Abstract

An acid leaching method was adopted to remove the impurities of potassium and iron from the DI (diaspore-illite) type low grade bauxite acquired from Dengfeng city of Henan province, in order to provide a higher quality raw material for the refractories industry. The effects of sulfuric acid concentration, leaching temperature, reaction time and sulfuric acid to bauxite ratio on removal efficiency of impurities were investigated. The optimum experiment conditions were: sulfuric acid concentration of 7 mol/L, reaction temperature of 90 °C, reaction time of 4 h and sulfuric acid to bauxite ratio of 6 mL/g. Under these conditions, the removal efficiency of potassium and iron were 19.2 and 94.0%, respectively. The approach presented in this work is a promising process of comprehensive utilization of low grade bauxite.

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Author information

Authors and Affiliations

  1. School of Chemical Engineering and Energy, Zhengzhou University, Zhengzhou, 450046, China

    Zhuang Li, Guihong Han, Guixia Fan & Yanfang Huang

  2. Research Institute of Henan Energy and Chemical Industry Group, Zhengzhou, 450046, China

    Zhuang Li

  3. Henan Province Industrial Technology Research Institute of Resources and Materials, Zhengzhou, 450001, China

    Yijun Cao

Authors
  1. Zhuang Li
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  2. Yijun Cao
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  3. Guihong Han
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  4. Guixia Fan
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  5. Yanfang Huang
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Corresponding author

Correspondence to Yijun Cao .

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Editors and Affiliations

  1. Rio Tinto Alcan, Saint Jean, France

    Olivier Martin

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© 2018 The Minerals, Metals & Materials Society

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Li, Z., Cao, Y., Han, G., Fan, G., Huang, Y. (2018). Research on Impurity Removal of Low Grade Bauxite. In: Martin, O. (eds) Light Metals 2018. TMS 2018. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-319-72284-9_4

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