钒钛磁铁矿还原磨选法含钒钛尾渣提钒研究  

Research on Leaching Vanadium from Vanadium and Titanium-bearing Tailings Produced in Reduction,Grinding and Separation of Vanadium-bearing Titaniferous Magnetite

作　　者：郭宇峰[1] 隋裕雷 姜涛[1] 吕亚男[1] 

机构地区：[1]中南大学资源加工与生物工程学院,湖南长沙410083

出　　处：《钢铁钒钛》2014年第2期9-14,共6页Iron Steel Vanadium Titanium

摘　　要：为探索钒钛磁铁矿经还原-磨选工艺得到的含钒钛尾渣适宜的提钒方法,对比研究了钠化提钒和酸浸提钒两种提钒工艺,研究发现,采用钠化法提钒,钒的浸出率仅为18%左右,采用酸浸法提钒,钒的浸出率在70%以上。钒钛磁铁矿还原磨选法含钒钛尾渣宜采用酸浸提钒的方法进行处理。对物料特性及提钒过程可能发生的物理化学变化分析表明,钒钛磁铁矿还原磨选法含钒钛尾渣钠化法提钒在焙烧过程钒易形成包裹,而酸浸法提钒在预氧化焙烧过程钒不会形成包裹体现象是其钒浸出率较高的主要原因。A comparative research on the two vanadium extraction processes of sodium roasting and acid leaching is carded out in order to find a suitable way to extract vanadium from vanadium and titanium-bearing tailings generated in reduction, grinding and separation of vanadium-bearing titaniferous magnetite. The research shows that with the application of the sodium roasting process, the leaching rate of vanadium is only about 18% while with the acid leaching process, it can be higher than 70%. It can be concluded that it is suitable to employ the acid leaching process for vanadium extraction from the vanadium and titanium-bearing tailings. Material characteristics together with physical and chemical variation in the process of vanadium extraction indicate that through the process of sodium roasting, vanadium could be wrapped with complex insoluble compounds during roasting while it won＇t happen during pre-oxidation roasting of the acid leaching process, which is the main reason for its higher vanadium leaching rate.

关 键 词：还原磨选法 含钒钛尾渣 提钒 钠化焙烧 酸浸 

分 类 号：TF841.3[冶金工程—有色金属冶金] X756[环境科学与工程—环境工程]