Abstract
The widely applied methods to extract vanadium are sodium roasting and calcified roasting. However, these roasting methods have difficulties in recycling of wastewater and efficient utilization of leaching residue, which contains high concentration of sodium or calcium sulfate, due to the variety of roasting additives radically. Therefore, a novelty extraction medium by roasting with MgO and leaching with sulfuric acid was introduced in this study. The oxidation and roasting mechanism were systematically studied, providing a theoretical basis for industrial extraction of vanadium. The result shows that under the optimum conditions, the roasting temperature of 900 °C, the Mg/V molar ratio of 0.6, and the roasting time of 1.5 h, the leaching efficiency of vanadium is above 90%. In the processes, vanadium spinel is converted into Mg2V2O7 and Mn2V2O7.
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References
Yao Z et al (2005) Review of vanadium processing in China. Eng Sci 3:58–62
Bradbury D et al (2002) The production of vanadium pentoxide. In: Vanadium—geology, processing and applications, the 41st annual conference of metallurgists of CIM, pp 115–130
Bale C et al (2002) Chartrand FactSage thermochemical software and databases. Calphad 26(2):189–228
Tavakoli M et al (2014) The kinetics of oxidative leaching of vanadium trioxide. Hydrometallurgy 147:83–89
Chen D et al (2013) A novel process for recovery of iron, titanium, and vanadium from titanomagnetite concentrates: NaOH molten salt roasting and water leaching processes. J Hazard Mater 244:588–595
Liu H et al (2013) Kinetics analysis of decomposition of vanadium slag by KOH sub-molten salt method. Trans Nonferrous Metals Soc, China 23(5):1489–1500
Wang Z-H et al (2014) Research and prospect on extraction of vanadium from vanadium slag by liquid oxidation technologies. Trans Nonferrous Metals Soc China 24(5):1273–1288
Wang Z et al (2015) Electrochemical decomposition of vanadium slag in concentrated NaOH solution. Hydrometallurgy 151:51–55
Li X-S et al (2012) Extraction of vanadium from high calcium vanadium slag using direct roasting and soda leaching. Int J Miner Metall Mater 19(7):595–601
He D et al (2017) An environmentally-friendly technology of vanadium extraction from stone coal. Miner Eng 20(12):1184–1186
Tavakoli M et al (2014) Separation of vanadium from iron by solvent extraction using acidic and neutral organophosporus extractants. Hydrometallurgy 141:17–23
Zhang Y et al (2011) The technology of extracting vanadium from stone coal in China: history, current status and future prospects. Hydrometallurgy 109(1):116–124
Li HY et al (2012) Vanadium extraction from high calcium-content vanadium slag by calcification roasting. In: TMS 2012 annual meeting, T.T. Chen honorary symposium on hydrometallurgy, electrometallurgy and materials characterization, pp 621–627
Zhang JH et al (2017) Oxidation kinetics of vanadium slag roasting in the presence of calcium oxide. Min Proc Ext Met Rev 38:265–273
Xiang JY et al (2018) Extraction of vanadium from converter slag by two-step sulfuric acid leaching process. J Clean Prod 170:1089–1101
Acknowledgements
This work was financially supported by National Natural Science Foundation of China [grant numbers 51474041, 51674051], Chongqing Science and Technology Bureau [grant number cstc2018jscx-mszdX0066], and Ministry of Education of China [grant numbers cqu2017hbrc1B08, 2019CDXYCL0031].
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Wang, C., Yuan, Y., Xie, B., Li, HY. (2020). Mechanism of Extraction of Vanadium from Vanadium Slag with MgO. In: Azimi, G., Forsberg, K., Ouchi, T., Kim, H., Alam, S., Baba, A. (eds) Rare Metal Technology 2020. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-030-36758-9_30
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DOI: https://doi.org/10.1007/978-3-030-36758-9_30
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