, Volume 71, Issue 12, pp 4600–4607 | Cite as

Process and Kinetic Assessment of Vanadium Extraction from Vanadium Slag Using Calcification Roasting and Sodium Carbonate Leaching

  • Guozhi Lu
  • Tingan ZhangEmail author
  • Guoquan Zhang
  • Weiguang Zhang
  • Ying Zhang
  • Zhihe Dou
  • Long Wang
  • Yanxiu Wang
  • Gang Xie
Rare Metal Recovery from Secondary Resources


The leaching process of vanadium from the calcification-roasted vanadium slag by sodium carbonate was researched. The effect of the main parameters on the sodium carbonate leaching process was investigated, and a kinetics analysis for the process using a new shrinking core model is presented. The results indicate that the leaching rate of vanadium significantly depends on the leaching temperature. Under the conditions of 6% CaO additive content in the roasted samples, 10:1 ml g−1 liquid–solid ratio, 80 g L−1 Na2CO3, and 30 min at 90°C, the leaching rate of vanadium is 86.64%. The clean and efficient utilization of vanadium slag can be achieved by the calcification roasting and sodium carbonate leaching process. Scanning electron microscopy/energy dispersive x-ray spectroscopy analysis shows that the vanadium slag can be effectively leached by sodium carbonate with few impurities drawn into the solution. The leaching kinetics of this process shows that the interfacial transfer and diffusion across the product layer affect the leaching at the same time. Moreover, the calculated activation energy of the leaching process is 40.93 kJ/mol, and the reaction order of the sodium carbonate concentration is 0.49.



This research was financial supported by the National Natural Science Foundation of China (Nos. 51874078, U1710257, 51874094), State Key Laboratory of Pressure Hydrometallurgical Technology of Associated Nonferrous Metal Resources (YY2016006), Fundamental Research Funds for the Central Universities of China (Nos. N182505038, N140203005, N140204015), Shenyang Science and Technology Project (17-500-8-01, Z18-5-022), Science and Technology Leading Talents Training Plan (2017HA012).

Supplementary material

11837_2019_3672_MOESM1_ESM.pdf (389 kb)
Supplementary material 1 (PDF 388 kb)


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Copyright information

© The Minerals, Metals & Materials Society 2019

Authors and Affiliations

  • Guozhi Lu
    • 1
  • Tingan Zhang
    • 1
    Email author
  • Guoquan Zhang
    • 1
  • Weiguang Zhang
    • 1
  • Ying Zhang
    • 1
  • Zhihe Dou
    • 1
  • Long Wang
    • 1
  • Yanxiu Wang
    • 1
  • Gang Xie
    • 2
  1. 1.Key Laboratory of Ecological Utilization of Multi-metal Intergrown Ores of Ministry of Education, School of Materials and MetallurgyNortheastern UniversityShenyangChina
  2. 2.State Key Laboratory of Pressure Hydrometallurgical Technology of Associated Nonferrous Metal ResourcesKunming Metallurgical Research InstituteKunmingChina

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