Effect of TiO<sub>2</sub> on the Sintering Behavior of Low-Grade Vanadiferous Titanomagnetite Ore

oleh: Songtao Yang, Weidong Tang, Xiangxin Xue

Format: Article
Diterbitkan: MDPI AG 2021-08-01

Deskripsi

Low-grade vanadiferous titanomagnetite ore (LVTM) is as an important mineral resource for sintering ore manufacturing. Furthermore, TiO<sub>2</sub> has a significant effect on the sintering process of iron ore fines. The effects of TiO<sub>2</sub> on the metallurgical properties, microstructure, and mineral composition of LVTM sinter were investigated by sintering pot tests, X-ray diffraction (XRD), scanning electron microscopy (SEM), and mineral phase microanalysis. The results were as follows: as the TiO<sub>2</sub> content increased from 1.75% to 4.55%, the flame front speed and productivity decreased, while the reduction degradation index (RDI) and softening properties deteriorated. In addition, the tumbler index (TI) values reached a maximum at TiO<sub>2</sub> = 1.75%. In addition, with increasing TiO<sub>2</sub> content, an increase in the magnetite and perovskite phase, and a decrease in calcium ferrite and hematite were found with an increase in TiO<sub>2</sub> content. Thus, the lower the TiO<sub>2</sub> content, the better the quality of the sinter.