Journal of Northeastern University:Natural Science ›› 2015, Vol. 36 ›› Issue (10): 1445-1448.DOI: 10.3969/j.issn.1005-3026.2015.10.017

• Materials & Metallurgy • Previous Articles     Next Articles

Separation Between Vanadium and Iron in Acid Leaching Solution of Converter Vanadium Slag Without Calcination

ZHANG Ying, ZHANG Ting-an, LYU Guo-zhi, LIU Zhuo-lin   

  1. School of Materials & Metallurgy, Northeastern University, Shenyang 110819, China.
  • Received:2014-06-17 Revised:2014-06-17 Online:2015-10-15 Published:2015-09-29
  • Contact: LYU Guo-zhi
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Abstract: In view of a new process of leaching the converter vanadium slags with titanium dioxide waste acid under the pressure without calcination proposed by our research group, V extraction from the solution which using waste acid leaching vanadium slag was studied using P204 as the extraction agent. The results showed that the reduction of ferric iron into ferrous iron by Na2SO3 as a pretreatment reducing agent prevented ferric irons co-extracted into the leaching liquid. Under the optimal technological condition: at room temperature, leaching solution original pH of 2.5, the volume ratio of the aqueous phase to oil phase of 1∶3 and the shaking time of 4min, the extraction rate of V is more than 98.61%, and the separation factor between V and Fe is up to 135.3 using the 20%P204 with 10%TBP synergistic extraction system.

Key words: vanadium slag, without calcination, vanadium extraction, separation factor;titanium dioxide waste

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