Mineral phase reconstruction behavior of direct reduction and smelting titanium slag at high temperature and slow cooling
来源期刊：Rare Metals2015年第6期
论文作者：Yi-Jie Wang Shu-Ming Wen Qi-Cheng Feng Zhi-Wen Ye Min Wang
文章页码：440 - 444
摘 要：Titanium slag in this study was produced by subjecting titanomagnetite concentrate to direct reductionelectric furnace smelting. Processing mineralogy and mineral phase reconstruction behavior at high temperature and slow cooling treatment were examined by chemical analysis, X-ray diffraction（XRD）, optical microscopy（OM）, scanning electron microscopy（SEM）, and energydispersive spectroscopy（EDS）. Anosovite solid solution is the main titanium product by the direct reduction and smelting process. Results of slow-cooling experiments show that crystal volume and size increase as cooling rate decreases. Anosovite and gangue mineral crystals develop fully with large crystal volume and size at a cooling rate of 2 K·min-1. Moreover, the growth of anosovite crystal was characterized by crystal nucleation and growth theory.These results provide further insights into the separation of anosovite from gangue by mineral processing.
Yi-Jie Wang1,2，Shu-Ming Wen1,2，Qi-Cheng Feng1,2，Zhi-Wen Ye1,2，Min Wang3
1. State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology2. Faculty of Land Resource Engineering, Kunming University of Science and Technology3. Advanced Analysis and Measurement Center, Yunnan University
摘 要：Titanium slag in this study was produced by subjecting titanomagnetite concentrate to direct reductionelectric furnace smelting. Processing mineralogy and mineral phase reconstruction behavior at high temperature and slow cooling treatment were examined by chemical analysis, X-ray diffraction（XRD）, optical microscopy（OM）, scanning electron microscopy（SEM）, and energydispersive spectroscopy（EDS）. Anosovite solid solution is the main titanium product by the direct reduction and smelting process. Results of slow-cooling experiments show that crystal volume and size increase as cooling rate decreases. Anosovite and gangue mineral crystals develop fully with large crystal volume and size at a cooling rate of 2 K·min-1. Moreover, the growth of anosovite crystal was characterized by crystal nucleation and growth theory.These results provide further insights into the separation of anosovite from gangue by mineral processing.
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