Mineral phase reconstruction behavior of direct reduction and smelting titanium slag at high temperature and slow cooling

作     者：Yi-Jie Wang Shu-Ming Wen Qi-Cheng Feng Zhi-Wen Ye Min Wang 

作者机构：State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization Kunming University of Science and Technology Faculty of Land Resource Engineering Kunming University of Science and Technology Advanced Analysis and Measurement Center Yunnan University 

出 版 物：《Rare Metals》 (稀有金属（英文版）)

年 卷 期：2015年第34卷第6期

页      面：440-444页

核心收录：

学科分类：083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 080603[工学-有色金属冶金] 0806[工学-冶金工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0702[理学-物理学] 

基　　金：financially supported by the Major Program of the National Natural Science Foundation of China(No.51090385) 

主　　题：Direct reduction Smelting titanium slag Anosovite Slow cooling Crystal 

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 ***-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.