Investigation into the possibility of using a novel ionic liquid leaching method to obtain vanadium from vanadium slag

Yıl 2023, Cilt: 6 Sayı: 1, 1 - 7, 31.03.2023

Herman Potgieter , Samaneh Teimouri

https://doi.org/10.35208/ert.1150621

Öz

An environmentally friendly, novel method for extracting vanadium from slag with two imidazolium-based ionic liquids, namely1-butyl-3-methylimidazolium trifluoromethane sulfonate [Bmim+CF3SO3-], and 1-butyl-3-methyl-imidazolium hydrogen sulfate [Bmim+HSO4-], before and after magnetic separation, was proposed in this study. The effect of the type of ionic liquid, the concentration of ionic liquid, temperature and liquid to solid ratio were examined. The optimum experimental condition after examining these influential factors was found to be: ionic liquid [Bmim+HSO4–] 50% (v/v), a leaching temperature of 100 ℃, and a liquid to solid ratio of 12 ml/g (12:1), at a leaching time of 90 min, with shaking speed of 250 rpm. The results indicated that a maximum vanadium extraction of 94.2% with 57.6% iron as an impurity could be achieved from the non-magnetic slag fraction. The kinetics of vanadium dissolution in 50% (v/v) [Bmim+HSO4–] was governed by a surface chemical reaction with an estimated Ea= 65.5 kJ/mol.

Anahtar Kelimeler

Vanadium slag, ionic liquids, vanadium extraction, iron extraction, pollution reduction

Kaynakça

• References [1]. Moskalyk, R. R. & Alfantazi, A. M., 2003. Processing of Vanadium: a review. Minerals Engineering, 16(9), pp. 793-805.
• [2]. Zhang, L. & Zheng, S., 2011. Acid leaching of calcined vanadium titanomagnetite with calcium compounds for extraction of vanadium. Chinese Journal of Process Engineering, 11(4), pp. 573-578
• [3]. Huang, D., 2000. Vanadium extraction & steelmaking. Beijing, China: Metallurgy Industry Press. [4]. Liu, B. & Meng, L., 2018. A novel method to extract vanadium from high-grade slag: Non-salt roasting and alkaline leaching. Physicochemical Problems of Mineral Processing, 54(3), pp. 657-667.
• [5]. Navarror, R., 2007. Vanadium recovery from oil fly ash by precipitation and solvent extraction processes. Waste Management, 27(3), pp. 114-119.
• [6]. Nkosi, S. & Dire, N., 2017. A comparative study of vanadium recovery from titaniferous magnietite using salt, sulphate, and soda ash roast-leach processes. In: 3rd Young Professionals Conference: Innovation Hub. Pretoria: The Southern African Institute of Mining and Metallurgy, pp. 191-200.
• [7]. Chen, D., Zhao, L. & Liu, Y., 2013. A novel process for recovery of iron, titanium and vanadium from titanomagnetite concentrate: NaOH molten salt roasting and water leaching. Journal of Hazardous Materials, Volume 244-245, pp. 588-595.
• [8]. Zhang, J., Zhang, W. & Zhang, L., 2015. Mechanism of vanadium slag roasting with calcium oxide. International Journal of Mineral Processing, Volume 138, pp. 20-29.
• [9]. Li, H., Wang, K. & Hua, W., 2016. Selective leaching of vanadium in calcification-roasted vanadium slag by ammonium carbonate. Hydrometallurgy, Volume 160, pp. 18-25.
• [10]. Li, R., Liu, T. & Zhang, Y., 2018. Efficient Extraction of Vanadium from Vanadium- Titanium Magnetite Concentrate by Potassium Salt Roasting Additives. Minerals, 8(25), pp. 1-14.
• [11]. Welton, T., 2004. Ionic liquids in catalysis. Coordination Chemistry Reviews, 248(21-24), pp. 2459-2477
• [12]. Bell, R. & Castleman, A. W., 1999. Vanadium oxide complexes in room-temperature chloroaluminate molten salts. Inorganic Chemistry, Volume 38, pp. 5709-5715.
• [13]. Treybal, R., 1955. Mass Transfer Operations. United States: McGraw-Hill.
• [14]. Faraji, Fariborz, Amirhossein Alizadeh, Fereshteh Rashchi, and Navid Mostoufi. 2020. “Kinetics of Leaching: A Review.” Reviews in Chemical Engineering 1(2020): 1–36.