Study on Extracting Vanadium by Adding Barium Sulfate Roasting-Acid Leaching from Clay Vanadium Ore
ZHU Jun1,2, KANG Min1, LI Weiliang1, WANG Bin1,2, QI Jianyun3, LI Shu1, LIU Danyang1
1 School of Metallurgical Engineering, Xi′an University of Architecture and Technology, Xi′an 710055, China 2 Shaanxi Provincial Advanced Energy Storage and Vanadium New Materials Engineering Technology Research Center, Ankang 725000, China 3 Northwest Institute of Nonferrous Geology, Xi′an 710043, China
Abstract: The roasting-acid leaching method with barium sulfate is used to extract vanadium from clay vanadium ore in a certain place, Henan Pro-vince, and the influence of roasting and leaching conditions on the leaching rate of vanadium is analyzed. The results show that the roas-ting temperature has a significant effect on the leaching rate of vanadium. The leaching effect of vanadium is better in a proper calcination tempe-rature range. Vanadium ore is roasted at 900 ℃ with 12% barium sulfate for 4 h to obtain the roasted sample. The leaching rate of vanadium is up to 79.16% under the conditions of 8% sulfuric acid concentration, 60 ℃ leaching temperature, 2 h leaching time and 2∶1 liquid-solid ratio. The results prove that it is feasible to extract vanadium by roasting with barium sulfate as additive, and the research on roasting mechanism indicates that barium sulfate can destroy the crystal structure of the clay vanadium ore, and promote vanadium oxide form vanadate soluble in dilute sulfuric acid.
朱军, 康敏, 李维亮, 王斌, 齐建云, 李姝, 刘丹阳. 粘土钒矿钡盐焙烧-酸浸提钒工艺研究[J]. 材料导报, 2020, 34(24): 24061-24067.
ZHU Jun, KANG Min, LI Weiliang, WANG Bin, QI Jianyun, LI Shu, LIU Danyang. Study on Extracting Vanadium by Adding Barium Sulfate Roasting-Acid Leaching from Clay Vanadium Ore. Materials Reports, 2020, 34(24): 24061-24067.
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2020, Vol. 34 
