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Extraction of vanadium from stone coal by modified salt-roasting process

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Abstract

In order to reduce the pollution of Cl2 and HCl released during extracting vanadium from stone coal by sodium chloride roasting, a modified salt-roasting process was proposed by adding calcined lime in roasting process followed by H2SO4 leaching. The effects of parameters including roasting temperature, roasting time, addition mass ratio of NaCl, calcined lime upon leaching rate of vanadium and curing rate of chlorine were investigated, and the effects of leaching time and leaching temperature on leaching rate of vanadium were also studied. The results show that the vanadium leaching rate and the curing rate of chlorine are 67.3% and 51.5% (mass fraction), respectively, at roasting temperature of 750 °C, roasting time of 4 h, 15% sodium chloride and 8% (mass fraction) calcined lime, leaching temperature of room temperature, and leaching time of 4 h.

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Authors and Affiliations

  1. School of Metallurgical Science and Engineering, Central South University, Changsha, 410083, China

    Ming-yu Wang  (王明玉), Xue-wen Wang  (王学文), Ji-feng Shen  (沈继峰) & Ri-na Wu  (乌日娜)

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  1. Ming-yu Wang  (王明玉)
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  2. Xue-wen Wang  (王学文)
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  3. Ji-feng Shen  (沈继峰)
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  4. Ri-na Wu  (乌日娜)
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Correspondence to Ming-yu Wang  (王明玉).

Additional information

Foundation item: Project(2007GH001) supported by Development and Reform Commission of Guizhou Province, China

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Wang, My., Wang, Xw., Shen, Jf. et al. Extraction of vanadium from stone coal by modified salt-roasting process. J. Cent. South Univ. Technol. 18, 1940–1944 (2011). https://doi.org/10.1007/s11771-011-0926-9

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  • DOI: https://doi.org/10.1007/s11771-011-0926-9

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