Vanadium Extraction from Yazd Saghand Ore by Roasting and Acid Leaching Process

Document Type : Research Note


Department of Chemical Engineering, Babol University of Technology, PO Box 484 Babol, I.R. IRAN


Vanadium is a metal which is used in ferrous and nonferrous alloys due to its physical properties such as tensile strength and hardness. In this study, the combined salt roasting and acid leaching processes was used for the extraction of vanadium from the Saghand iron ore. Firstly, the ore and sodium carbonate were mixed and placed in a high temperature furnace during the roasting process, and then the leaching operation was carried out by sulfuric acid. Factors affecting the processes such as temperature and time of roasting procces, acid concentration, leaching temperature, time and liquid to solid ratio were studied and their optimum values were obtained. According to the results, under roasting salt with 50 wt.%, temperature of 1000 °C, and a time of 1 h and for conditions of acid leaching with a concentration of 15%(v/v) sulfuric acid, temperature of 90 °C, the time of 4 h, and the ratio of liquid to solid of 15 mL/g, leaching efficiency of vanadium was approximately 80%.


Main Subjects

[1] Habashi F., "Handbook of Extractive Metallurgy", Volume 3, Wiley-VCH, Heidelberg, Germany, (1997).
[2] بدیعی، رسام؛ صدرنژاد، سیدخطیب الاسلام؛ استحصال وانادیم ازکاتالیستهای مصرفی و سنگ معدن حاوی وانادیم، به عنوان مواد خام وانادیم دار قابل دسترس در ایران، نشریه شیمی و مهندسی شیمی ایران، (٢)٢٤: 29 تا 38 (1384).
[3] Moskalyk R.R., Alfantazi A.M., Processing of Vanadium: A Review, Minerals Engineering, 16: 793–805 (2003).
[5] Cai J.Q., Ba L., New Technology of Extraction Vanadium from Stone Coal, Conservation and Utilization of Mineral Resources, 5: 30–33 (1993).
[7] Xiangyang Z., Changlin L., Jie L., Hongzhuan L., Shangyuan W., Leaching of Vanadium from Carbonaceous Shale, Hydrometallurgy, 99(1): 97–99 (2009).
[8] Zhu Y., Zhang G., Feng Q., Lu Y., Ou L., Huang S., Acid Leaching of Vanadium from Roasted Residue of Stone Coal, Transactions of Nonferrous Metals Society of China, 20: 107–111 (2010).
[9] Dongsheng H., Qiming F., Guofan Z., An Environmentally-Friendly Technology of Vanadium Extraction from Stone Coal, Minerals Engineering, 1184–1186 (2007).
[10] Mahdavian A., Shafyei A., Keshavarz Alamdari E., Haghshenas D.F., Recovery of Vanadium from Esfahan Steel Company Steel Slag; Optimizing of Roasting and Leaching Parameters, International Journal of Iron and Steel Society of Iran, 3(2): 17–21 (2006).
[11] Li M., Wei Ch., Fan G., Wu H., Li C., Li X., Acid Leaching of Black Shale for the Extraction of Vanadium, International Journal of Mineral Processing, 95(1–4): 62–67 (2010).
[12] طباطبایی، سیدعباس؛ قربان کریمی، غلامحسین؛ بازیابی و استحصال وانادیوم از کانسنگ آهن چغارت، کنفرانس مهندسی معدن ایران، دانشگاه تربیت مدرس، (1383).
[13] شیخ شاب بافقی، محمد؛ ابوطالبی، محمدرضا؛ امامی، امیرحسین؛ بازیابی وانادیوم از سربارۀ کنورتور فولادسازی به روش تشویه­ی نمکی، نشریهدانشکدهفنی، (6) 39: 820 تا 813 (1384).
[14] Gupta C.K., Kris hnamurthy N., “Extractive Metallurgy of Vanadium”, Elsevier Science Pablishers, Amsterdam, (1992).
[15] Aarabi-Karasgani M., Rashchi F., Mostoufi N., Vahidi E., Leaching of Vanadium from LD Converter Slag Using Sulfuric Acid, Hydrometallurgy, 102: 14–21 (2010).
[16] Tavakoli M.R., Dornian S., Dreisinger D.B., The leaching of Vanadium Pentoxide Using Sulfuric Acid and Sulfite as a Reducing Agent, Hydrometallurgy, 141: 59–66 (2014).