| Abstract Scope |
With the increasing proportion of pellet ore used in blast furnaces, in addition to iron concentrate being used to prepare pellets, more and more fine ore is finely ground and used to prepare pellets. These fine ores are mostly composed of hematite and limonite, with significant differences in filtration performance. To study the filtration performance of different powder ores, experiments were conducted on nearly 10 types of ores to investigate the relationship between chemical composition, mineral composition, surface properties, grinding difficulty, and filtration performance. The experimental results showed that ores with higher content of limonite, rougher surface, and easier grinding had poorer filtration performance. By adjusting the filtration slurry concentration, filtration vacuum degree, filtration time, grinding particle size, adding filter aids, and selecting filtration equipment, the fine grinding powder has achieved lower filtration moisture. |