journal6 ›› 2015, Vol. 36 ›› Issue (6): 59-62.DOI: 10.3969/j.cnki.jdxb.2015.06.014

• Biological and chemical • Previous Articles     Next Articles

Leaching Vanadium and Silicon from Stone Coal by Alkaline Process

 ZENG  Ying-Yuan, HUA  Jun, YAN  Wen-Bin, GAO  Feng, CAI  Jun   

  1. (1.College of Chemistry and Chemical Engineering,Jishou University,Jishou 416000,Hunan China;2.Collaborative Innovation Center of Manganese-Zinc-Vanadium Industrial Technology(the 2011 Plan of Hunan Province),Jishou 416000,Hunan China)
  • Online:2015-11-25 Published:2015-12-23

Abstract: In order to make full use of valuable element silicon in stone coal,alkali leaching vanadium process was used in extracting vanadium and silicon from stone coal. Through pre-roasting,the stone coal structure can be destroyed and the leaching rate of vanadium and silicon can be improved.When the roast temperature was 850 ℃,the roast time was 2 h,the leaching temperature was 95 ℃,the leaching time was 4 h,the solid ̄liquid ratio was 1∶1.4,and the ratio of alkali and ore was 1.2∶1,the leaching rates of vanadium and silicon were 86.6% and 61.4% respectively.

Key words: alkaline process, pre-roasting, stone coal, vanadium, silicon

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