高铬型钒钛磁铁矿配量增加对氧化球团质量的影响

采取“细磨处理高铬型钒钛磁铁矿”和“以粒度较细的廉价欧控矿代替现场生产用矿”两种优化措施，考察了高铬型钒钛磁铁矿配量增加对氧化球团质量的影响，探索了高铬型钒钛矿在球团原料中配量增加的可行性.结果表明:“细磨处理高铬型钒钛磁铁矿”和“以粒度较细的廉价欧控矿代替现场生产用矿”，当高铬型钒钛矿配量40%时，抗压强度分别为2475N·个-1和2005N·个-1，膨胀率为192%和16%，皆满足高炉生产要求，可实现该矿在原料中配量增加，能达到高铬型钒钛矿预期90万t/年的处理目标.

Effect of the Increasing Percent of High Chromium Vanadium-Titanium Magnetite on Quality of Oxidized Pellets

The two optimization measures including “fine grinding high chromium vanadium titanium magnetite” and “replacement of the practical production iron ore with cheap finer Oukong powder(imported)” were adopted. Effects of the percentage of the addition of the high chromium vanadium titanium magnetite powder on the quality of oxidized pellets were investigated and the feasibility of adding high chromium vanadium titanium magnetite powder was explored. Through both optimization methods， when the ratio of high chromium vanadium titanium magnetite was 40%， the compressive strength was 2475N per one and 2005N per one，respectively， while the reduction expansion ratio was 192% and 16% correspondently. These parameters all met the requirements of the practical blast furnace production. So the increasing percent of high chromium vanadium titanium magnetite in raw material was achieved and the target of 900000 tons per year of the iron and steel company was reached.