Abstract
The feasibility of simultaneous vanadium extraction and phosphorus removal from vanadium-containing hot metal was demonstrated with laboratory experimental investigation. The effect of CaO addition on the distribution behavior of vanadium, phosphorus between basic vanadium slag and semi-steel as well as the influence of basicity on the leaching behavior of vanadium, phosphorus was particularly studied. Results show that vanadium oxidation ratio slightly decreases with the increase of basicity, but phosphorus oxidation ratio rapidly increases with the increase of basicity. The leaching of roasted vanadium slag with various CaO contents indicated that the optimal slag basicity for extracting vanadium was 1.5. The maximum leaching efficiency of vanadium could reach 84.02% and the sequence of vanadium leaching efficiency by using different leaching reagents was: 160 g/L Na2CO3 > 100 g/L NaHCO3 > 400 g/L (NH4)2CO3 > 5% H2SO4.
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Acknowledgements
This work was financially supported by the National Basic Research and Development Program of China (No. 2013CB632604), Scientific and Technological Research Program of Chongqing Municipal Education Commission (Grant No. KJ1601403, KJ1601412), and Scientific Research Program of Chongqing University of Education (Grant No. KY201551C).
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Zhang, T., Wang, Z., Li, DW., Jiang, D. (2017). Effect of CaO Addition on the Behavior of Vanadium and Phosphorus During Oxidation and Leaching Process. In: Hwang, JY., et al. 8th International Symposium on High-Temperature Metallurgical Processing. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-319-51340-9_52
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DOI: https://doi.org/10.1007/978-3-319-51340-9_52
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