1 Institute of Artificial Intelligence, University of Science and Technology Beijing, Beijing 100083, China 2 School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China 3 College of Artificial Intelligence, North China University of Science and Technology, Tangshan 063210, Hebei, China
Abstract：The measurement method and quantitative indexes of iron ore consolidation characteristic temperature (CCT) during roasting, including consolidation starting temperature, highest consolidation rate temperature, and consolidation termination temperature, were improved based on previous research. The mineral properties of V–Ti magnetite (Panzhihua) were analyzed, and the CCT of V–Ti magnetite was calculated. To investigate the effect of mineral types on CCT, a series of trials were carried out by using various ores, including high-grade magnetite ore, high silicon iron ore, and V–Ti magnetite ore. The greatest shrinkage of V–Ti magnetite was 6.7%, the consolidation starting temperature was 991 °C, and the termination temperature was 1384 °C. The results of X-ray diffraction analysis indicated that the V–Ti magnetite ore was composed of titanomagnetite, peridotite, and other minerals, which is more complicated than conventional magnetite. As a result, the temperature at the maximum rate of consolidation and the temperature at the termination of consolidation are the greatest. FeTiO3 and MgFe2O4 in V–Ti magnetite may inhibit the creation of sinter necks between hematite particles. Liquid phase occurs inside the pellet when the temperature surpasses 1250 °C, which may accelerate particle growth and the formation of a sintering neck within the pellets.
Yao-zu Wang,Jian-liang Zhang,Zhi-hui Chen, et al. A quantitative investigation on consolidation of titanium-containing pellets during roasting process[J]. Journal of Iron and Steel Research International, 2023, 30(1): 40-50.
2023, Vol. 30 
