Effect of TiO(2) on the Sintering Behavior of Low-Grade Vanadiferous Titanomagnetite Ore

Low-grade vanadiferous titanomagnetite ore (LVTM) is as an important mineral resource for sintering ore manufacturing. Furthermore, TiO(2) has a significant effect on the sintering process of iron ore fines. The effects of TiO(2) 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(2) 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(2) = 1.75%. In addition, with increasing TiO(2) content, an increase in the magnetite and perovskite phase, and a decrease in calcium ferrite and hematite were found with an increase in TiO(2) content. Thus, the lower the TiO(2) content, the better the quality of the sinter.