Wu En-Hui, Lin Yin-He, Liu Jun, Wang Zhe, Liu Jin-Chuan, Yin Guo-Liang, Li Jing-Wei, Cheng Xiang-Kui, Jia Yu-Long
Panzhihua International Research Institute of Vanadium and Titanium, Panzhihua University, Panzhihua 617000, China.
School of Materials and Chemical Engineering, Yinbin University, Yibin 644007, China.
Materials (Basel). 2021 Nov 9;14(22):6736. doi: 10.3390/ma14226736.
The titanium-enriched slag was obtained via atmospheric hydrochloric acid leaching of mechanically activated vanadium titanomagnetite concentrates (VTMCs). Under the influence of mechanical activation, specific physicochemical changes were observed via X-ray diffractometry, scanning electron microscopy, and granulometric laser diffraction analysis. Experimental findings revealed that the mechanical activation of VTMCs resulted in a decrease in the median volume particle diameter (d50) and an increase in the specific surface area (SA) with an increased milling time. The results of the leaching experiment revealed that the mechanical activation treatment favors the extraction of iron (Fe) and titanium dioxide (TiO) from the VTMCs. The Fe and TiO extractions from the mechanically activated sample after 10 h compared with the unactivated sample were increased by 12.82% and 4.73%, respectively. The presence of the ilmenite phase in the titanium-enriched slag was confirmed by X-ray diffractometry and EDS patterns, and the content of the TiO in the enriched slag can get as high as 43.75%.
通过对机械活化钒钛磁铁矿精矿（VTMCs）进行常压盐酸浸出获得富钛渣。在机械活化的影响下，通过X射线衍射、扫描电子显微镜和粒度激光衍射分析观察到了特定的物理化学变化。实验结果表明，随着研磨时间的增加，VTMCs的机械活化导致中位体积粒径（d50）减小，比表面积（SA）增大。浸出实验结果表明，机械活化处理有利于从VTMCs中提取铁（Fe）和二氧化钛（TiO）。与未活化样品相比，机械活化10小时后的样品中Fe和TiO的提取率分别提高了12.82%和4.73%。通过X射线衍射和能谱图证实了富钛渣中钛铁矿相的存在，富钛渣中TiO的含量可高达43.75%。
