Abstract
Aim to the separation problem of high concentration V–Fe in stronger acidic leaching solution of vanadium slag, a novel chelating extraction system is proposed to separate V and Fe . Influence factors including initial pH value, the extractant concentration, the phase ratio, temperature and time are investigated. The experiment results show that single extraction rate of V and Fe reach 85.57 and 0.39% respectively, when pH value is −0.4, organic phase composition is 30% Mextral 973H + 70% sulfonated kerosene oil, O:A = 1:1, stirring time is 10 min, extraction temperature is 30 °C. The industrial experiment results of three levels countercurrent extraction show that the total extraction rate of vanadium and iron can reach 97.44 and 0.23%, separation factor is 6410. The effective separation of V and Fe in high acid and high iron solution can be accomplished.
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Acknowledgements
This work was financially supported by the National Natural Science Foundation of China (Nos. 51504059) and the Fundamental Research Funds for the Central Universities (N162504016).
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Zhang, W., Zhang, Ta., Lyu, G., Tian, Y., Long, B., Cao, X. (2018). Extraction Separation of V and Fe in High Acid and High Iron Solution. In: Kim, H., et al. Rare Metal Technology 2018. TMS 2018. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-319-72350-1_27
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DOI: https://doi.org/10.1007/978-3-319-72350-1_27
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