Skip to main content
SpringerLink
Log in

Comparison of the mechanisms of microwave roasting and conventional roasting and of their effects on vanadium extraction from stone coal

  • Published:
International Journal of Minerals, Metallurgy, and Materials Aims and scope Submit manuscript

Abstract

Experiments comparing microwave blank roasting and conventional blank roasting for typical vanadium-bearing stone coal from Hubei Province in central China, in which vanadium is present in muscovite, were conducted to investigate the effects of roasting temperature, roasting time, H2SO4 concentration, and leaching time on vanadium extraction. The results show that the vanadium leaching efficiency is 84% when the sample is roasted at 800°C for 30 min by microwave irradiation and the H2SO4 concentration, liquid/solid ratio, leaching temperature, and leaching time are set as 20vol%, 1.5:1 mL·g−1, 95°C, and 8 h, respectively. However, the vanadium leaching efficiency achieved for the sample subjected to conventional roasting at 900°C for 60 min is just 71% under the same leaching conditions. Scanning electron microscopy (SEM) analysis shows that the microwave roasted samples contain more cracks and that the particles are more porous compared to the conventionally roasted samples. According to the results of X-ray diffraction (XRD) and Fourier-transform infrared (FTIR) analyses, neither of these roasting methods could completely destroy the mica lattice structure under the experimental conditions; however, both methods deformed the muscovite structure and facilitated the leaching process. Comparing with conventional roasting, microwave roasting causes a greater deformation of the mineral structure at a lower temperature for a shorter roasting time.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  1. Y.M. Zhang, S.X. Bao, T. Liu, T.J. Chen, and J. Huang, The technology of extracting vanadium from stone coal in China: history, current status and future prospects, Hydrometallurgy, 109(2011), No. 1–2, p. 116.

    Article  Google Scholar 

  2. M.Y. Wang and X.W. Wang, Research status and prospect of vanadium leaching processes from stone coal, Chin. J. Rare Met., 34(2010), No. 1, p. 90.

    Google Scholar 

  3. X.B. Zhu, Y.M. Zhang, and T. Liu, Experiment and mechanism of vanadium extraction from stone coal by roasting with activators, Chin. J. Rare Met., 37(2013), No. 2, p. 283.

    Google Scholar 

  4. H.L. Wu, C. Wei, G. Fan, M.Y. Li, Z.G. Deng, and H.W. Ge, Occurrence of vanadium in high carbon stone-coal and priority of preparation process, J. Kunming Univ. Sci. Technol. Sci. Technol., 33(2008), No. 6, p. 17.

    Google Scholar 

  5. R.Y. Xiong and X.L. Zhang, The process of extracting vanadium pentoxide from bone coal and the pollution treatment measures, Environ. Prot. Technol., 16(2010), No. 3, p. 26.

    Google Scholar 

  6. W.C. Dai and S.Y. Sun, Study on the new clean technology of vanadium extraction from stone coal, Nonferrous Met., (2010), No. 1, p. 23.

    Google Scholar 

  7. Y.Z. Yuan, Y.M. Zhang, T.J. Chen, T. Liu, F. Wang, and J. Liu, Vanadium extraction from stone coal by microwave roasting with size grading, Chin. J. Rare Met., 38(2014), No. 3, p. 534.

    Google Scholar 

  8. T.J. Chen, G.Z. Qiu, and D.Q. Zhu, Oxidation mechanism of vanadium extraction in stone coal roasting with cyclic oxidation, Met. Mine, (2008), No. 6, p. 62.

    Google Scholar 

  9. T.J. Chen, G.Z. Qiu, and D.Q. Zhu, Valence variation and oxidation kinetics of vanadium during vanadium bearing stone coal roasting, Min. Metall. Eng., 28(2008), No. 3, p. 64.

    Google Scholar 

  10. J. Zhao, Y.M. Zhang, J. Huang, T. Liu, F. Wang, Y. Wang, and J. Liu, Process of blank roasting-sulphuric acid leaching of vanadium with leaching agent from stone coal, Chin. J. Rare Met., 37(2013), No. 3, p. 446.

    Google Scholar 

  11. M. Lu., Y. Zhang, T. Liu, and D. Yang, Sintering action of NaCl calcination during extracting vanadium from stone coal, Chin. J. Rare Met., 33(2009), No. 6, p. 894.

    Google Scholar 

  12. W.Q. Cai, H.Q. Li, and Y. Zhang, The application of microwave technology in the metallurgical process, Chin. J. Process Eng., 5(2005), No. 2, p. 228.

    Google Scholar 

  13. D.A. Jones, T.P. Lelyveld, S.D. Mavrofidis, S.W. Kingman, and N.J. Miles, Microwave heating applications in environmental engineering: a review, Resour. Conserv. Recycl., 34(2002), No. 2, p. 75.

    Article  Google Scholar 

  14. G.Q. Ouyang, X.Y. Zhang, X.D. Tian, Y. Li, and S. Xie, Effect of microwave roasting on vanadium extraction from stone coal, Chin. J. Nonferrous Met., 18(2008), No. 4, p. 750.

    Google Scholar 

  15. X.Y. Zhang, W.Q. Qin, X.D. Tian, Y.B. Chen, Y. Gu and X.G. Xi, Microwave roasting-acidic leaching technique for extraction of vanadium from stone coal, Chin. J. Nonferrous Met., 21(2011), No. 4, p. 908.

    Google Scholar 

  16. China Metallurgical Information and Standardization Institute. GB/T 8704.5—2007 Ferrovanadium — Determination of Vanadium Content — the Ammonium Ferrous Sulfate Titrimetric Method and the Potentiometric Titrimetric Method, 2007.

  17. F. Wang, Y.M. Zhang, J. Huang, T. Liu, X. Yang, Y. Wang, and J. Zhao, Mechanisms of aid-leaching reagent calcium fluoride in the extracting vanadium processes from stone coal, Rare Met., 32(2013), No. 1, p. 57.

    Article  Google Scholar 

  18. F. Wang, Y.M. Zhang, J. Huang, T. Liu, J. Zhao, and G.B. Zhang, Acid-leaching of vanadium from stone coal with calcium fluoride addition, Chin. J. Rare Met., 37(2013), No. 4, p. 628.

    Google Scholar 

  19. J. Madejová, J. Bujdák, M. Janek, and P. Komadel, Comparative FT-IR study of structural modifications during acid treatment of dioctahedral smectites and hectorite, Spectrochim. Acta Part A, 54(1998), No. 10, p. 1397.

    Article  Google Scholar 

  20. L. Wen, Mineral Infrared Spectroscopy, Chongqing University Press, Chongqing, 1988, p. 95.

    Google Scholar 

Download references

Author information

Authors and Affiliations

  1. College of Resources and Environmental Engineering, Wuhan University of Science and Technology, Wuhan, 430081, China

    Yi-zhong Yuan, Yi-min Zhang, Tao Liu & Tie-jun Chen

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

    Yi-zhong Yuan, Yi-min Zhang, Tao Liu & Tie-jun Chen

Authors
  1. Yi-zhong Yuan
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. Yi-min Zhang
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. Tao Liu
    View author publications

    You can also search for this author in PubMed Google Scholar

  4. Tie-jun Chen
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to Yi-min Zhang.

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Yuan, Yz., Zhang, Ym., Liu, T. et al. Comparison of the mechanisms of microwave roasting and conventional roasting and of their effects on vanadium extraction from stone coal. Int J Miner Metall Mater 22, 476–482 (2015). https://doi.org/10.1007/s12613-015-1096-9

Download citation

  • Received:

  • Revised:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s12613-015-1096-9

Keywords

Search

Navigation