峨口铁矿二磁精矿制备高品质铁精矿粉试验研究

Preparation of High⁃Quality Iron Concentrate Powder by Refining Concentrate from Second⁃Stage Magnetic Separation Process of Ekou Iron Mine

针对太钢峨口铁矿资源及生产现状,开展了二段磁选精矿提铁降杂试验研究,采用磨矿-弱磁选-反浮选流程,可获得产率76.33%、TFe品位69.93%、回收率93.08%、SiO_(2)含量1.63%的高品质铁精矿。

In view of the resource characteristics and production status of Ekou Iron Mine of Taiyuan Iron&Steel(Group)Co Ltd,an experimental research was conducted to upgrade iron grade of the concentrate from the second-stage magnetic separation while reducing impurities therein.An optimized flowsheet consisting sequentially of grinding,low-intensity magnetic separation and reverse flotation was adopted in the experiment,resulting in a high-quality iron concentrate grading 69.93%TFe at a recovery of 93.08%,with a yield of 76.33%,while the SiO_(2) content was reduced to 1.63%.