An environment-friendly leaching process of converter vanadium-bearing slag
The extraction of vanadium from converter slag (Panzhihua Steel Making Plant of China) was attempted to use an environment-friendly leaching process without roasting. The orthogonal experiment was finished and the effects of initial concentration of sulfuric acid, temperature, stirring speed, liquid to solid ratio, and leaching time were investigated by range analysis and variance analysis. The leachate and residue were characterized by ICP, XRF, and XRD. The experiment results indicate that when temperature is 140t , initial concentration of sulfuric acid is 200 g/L, liquid to solid ratio is 20: 1, leaching time is 120 min, stirring speed is 500 rpm, oxygen partial pressure is 0. 5 MPa, and particle size is - 0. 075 - + 0. 055 mm ( A3 B3 C3 D3 E3 ) , leaching rate of vanadium is 97. 74％ and that of titanium is 13. 0％ , the contents of vanadium and titanium oxide are 0. 573％ and 26. 38％ respectively in residue. Vanadium and titanium have a well separation through the environment-friendly leaching process.
environment-friendly leaching converter vanadium-bearing slag leaching rate vanadium titanium
Wangzhong Mu Tingan Zhang Zhihe Dou Guozhi Lu Yan Liu
Key Laboratory of Ecological Utilization of Multi-metal Intergrown Ores of Ministry of Education and School of Materials and Metallurgy, Northeastern University, 110819, Shenyang, China
国际会议
The 19th International Biohydrometallurgy Symposium(第19届国际生物湿法冶金大会 IBS2011)
长沙
英文
1031-1036
2011-09-18（万方平台首次上网日期，不代表论文的发表时间）