与传统浮选柱相比,东北工学院研制的静态混合磁力旋流(SMMC)型浮选柱,柱体高度较低,充气器结构简单、柱外安装、维修方便、充气量较大,气泡尺寸较小,改善了细粒回收,气浆柱外混合,提高了浮选效率。一台两米高的浮选柱对东鞍山难选矿石反浮选,获得产率40.8%、品位7.79%的废弃尾矿,粗精矿品位52.67%、回收率达90.7%。 Compared with the traditional flotation column, the static mixed magnetic swirling (SMMC) flotation column developed by Northeast Institute of Technology has lower column height, simple aerator structure, convenient installation and maintenance outside the column, larger air volume, Smaller size, improved recovery of fine particles, mixed with gas outside the column, improve the flotation efficiency. A two-meter-high flotation column was used to reverse flotation of Dong’anshan Refractory Ore. The waste tailings with yield of 40.8% and grade of 7.79% were obtained. The crude concentrate grade was 52.67% and the recovery rate was 90.7%.