Abstract
The extraction of vanadium from high calcium vanadium slag was attempted by direct roasting and soda leaching. The oxidation process of the vanadium slag at different temperatures was investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM), and energy dispersive spectroscopy (EDS). The effects of roasting temperature, roasting time, Na2CO3 concentration, leaching temperature, leaching time, and liquid to solid ratio on the extraction of vanadium were studied. The results showed that olivine phases and spinel phases in the vanadium slag were completely decomposed at 500 and 800°C, respectively. Vanadium-rich phases were formed at above 850°C. The leaching rate of vanadium reached above 90% under the optimum conditions: roasting temperature of 850°C, roasting time of 60 min, Na2CO3 concentration of 160 g/L, leaching temperature of 95°C, leaching time of 150 min, and liquid to solid ratio of 10:1 mL/g. The main impurities were Si and P in the leach liquor.
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References
L. Perron. The vanadium industry: a review, [in] M.F. Tanner, P.A. Riveros, J.E. Dutrizac, M. Gattrell, and L. Perron, eds., Vanadium: Geology, Processing and Applications, Proceedings of the International Symposium on Vanadium Held at the 41st Annual Conference of Metallurgists of CIM (COM), Montreal, 2002, p.17.
P.R. Taylor, S.A. Shuey, E.E. Vidal., and J.C. Gomez, Extractive metallurgy of vanadium containing titaniferous magnetite ores: a review, Miner. Metall. Process., 23(2006), No.2, p.80.
B.V.R. Raja, Vanadium market in the world, Steelworld, 13(2007), No.2, p.19.
M.Y. Wang, L.S, Xiao, Q.G. Li, X.W. Wang, and X.Y. Xiang, Leaching of vanadium from stone coal with sulfuric acid, Rare Met., 28(2009), No.1, p.1.
A. Ognyanova, A.T. Ozturk, I. De Michelis, F. Ferella, G. Taglieri, A. Akcil, and F. Vegliò, Metal extraction from spent sulfuric acid catalyst through alkaline and acidic leaching, Hydrometallurgy, 100(2009), p.20.
R.R. Moskalyk and A.M. Alfantazi, Processing of vanadium: a review, Miner. Eng., 16(2003), No.9, p.793.
D.X. Huang, Vanadium Extraction and Steelmaking, Metallurgical Industry Press, Beijing, 2000, p.17.
W.S. Ge, W. He, Y. Peng, J. Wang, H.T. Cheng, B.L. Yi, K. Chen, and J.Q. Yan, Trail on vanadium recovery process from low-vanadium bearing hot metal, [in] The 7th CSM Annual Meeting Proceeding, Beijing, 2009, p.275.
J.C. Wang, Effect of calcium on leaching of vanadium from vanadium slag, Sichuan Nonferrous Met., 2004, No.4, p.27.
B. Burwell, Extractive metallurgy of vanadium, J. Met., 13(1961), p.562.
G. Gabra and I. Malinsky, A comparative study of the extraction of vanadium from titaniferous magnetite and slag, [in] Processing Symposium, Extractive Metallurgy of Refractory Metals, 110th AIME Annual Meeting, Chicago, 1981, p.167.
H. Shlewit and M. Alibrahim, Extraction of sulfur and vanadium from petroleum coke by means of salt-roasting treatment, Fuel, 85(2006), p.878.
H.S. Chen, Extraction of vanadium pentoxide from vanadium slag by lime calcination, Iron Steel Vanadium Titanium, 13(1992), No.2, p.1.
N.P. Slotvinsky-sidak, V.I. Potapov, L.E. Kolpakov, S.D. Grekov, V.G. Dobosh, and N.V. Grinberg, A Method of Recovering Vanadium Values from a Vanadium-containing Material, US Patent, No.1394024, 1973.
Z.H. Dong, R.J. Li, D.J. Liu, and D.C. Xiao, A Method for Extracting Vanadium Pentoxide from Stone Coal or Vanadiferous Cinder With High Calcium Calcination, Chinese Patent, No.CN101323914A, 2008.
H.Z. Wang, Slag Analysis, Science Press, Beijing, 2006, p.753.
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This work was financially supported by the National High-Tech Research and Development Program of China (No. 2008AA031104), the National Basic Research and Development Program of China (No. 2007CB13503), and the National Natural Science Foundation of China (No. 51090382).
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Li, Xs., Xie, B. Extraction of vanadium from high calcium vanadium slag using direct roasting and soda leaching. Int J Miner Metall Mater 19, 595–601 (2012). https://doi.org/10.1007/s12613-012-0600-8
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DOI: https://doi.org/10.1007/s12613-012-0600-8