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Vanadium Extraction from Refractory Stone Coal Using Novel Composite Additive

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Abstract

Based on the novel composite additive BaCO3/CaO for the vanadium extraction from the refractory stone coal, the vanadium leaching effect has been investigated and many technical conditions have also been optimized. The results indicated that an optimum vanadium leaching efficiency of 81.07% can be obtained under the conditions that the mass ratio of BaCO3 to CaO was 1:9 with the total proportion of the raw ore was 5 wt.%, the roasting temperature was 850°C, the roasting time was 2 h, the sulfuric acid concentration was 15% (v/v), the leaching temperature was 95°C, the liquid-to-solid ratio was 4 mL/g, and the leaching time was 3 h. Meanwhile, the vanadium leaching mechanisms demonstrated that the composite additive BaCO3/CaO can destroy the lattice structure of muscovite and phlogopite with the production of BaSi4O9 and Ca2Al2SiO7 during the roasting process, which can therefore facilitate the release and extraction of vanadium.

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Acknowledgements

This work was financially supported by the National Natural Science Foundation of China (Nos. 51474162 and 51404174), and the Science and Technology Research Program of Ministry of Education of China (No. 213025A).

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Authors and Affiliations

  1. School of Resource and Environmental Engineering, Wuhan University of Science and Technology, Wuhan, 430081, China

    Z. L. Cai, Y. M. Zhang, T. Liu & J. Huang

  2. Hubei Provincial Engineering Technology Research Center of High Efficient Cleaning Utilization for Shale Vanadium, Wuhan, 430081, China

    Z. L. Cai, Y. M. Zhang, T. Liu & J. Huang

  3. Hubei Collaborative Innovation Center for High Efficient Utilization of Vanadium Resources, Wuhan, 430081, China

    Z. L. Cai, Y. M. Zhang, T. Liu & J. Huang

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  1. Z. L. Cai
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  2. Y. M. Zhang
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  3. T. Liu
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  4. J. Huang
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Correspondence to Z. L. Cai.

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Cai, Z.L., Zhang, Y.M., Liu, T. et al. Vanadium Extraction from Refractory Stone Coal Using Novel Composite Additive. JOM 67, 2629–2634 (2015). https://doi.org/10.1007/s11837-015-1611-5

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  • DOI: https://doi.org/10.1007/s11837-015-1611-5

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