贵州赫章鲕状赤铁矿选矿试验研究

采用强磁选-反浮选工艺对贵州赫章鲕状赤铁矿进行提铁降磷试验研究。在磨矿细度-0.075 mm占77.50%，磁感应强度1.55 T和棒介质的条件下进行1次强磁选粗选；强磁选粗精矿在磨矿细度-0.038 mm占84.00%，磁感应强度1.40 T和网介质的条件下进行1次精选；强磁选粗尾矿在磁感应强度1.40 T和网介质的条件下进行1次扫选，然后精选尾矿和扫选精矿合并返回磨矿闭路流程，获得铁品位52.13%，磷含量0.45%，回收率72.16%的铁精矿。采用高效调整剂和高效捕收剂将强磁选精矿进行1次反浮选，获得了铁品位56.14%，磷含量0.22%，回收率62.48%的铁精矿。强磁选-反浮选工艺为开发利用该地鲕状赤铁矿提供了可行的依据。

Test Research on Beneficiation of Hezhang Oolitic Hematite in Guizhou Province

The experiments on iron improvement and phosphorous reduction for Hezhang oolitic hematite in Guizhou,were carried out by high intensity magnetic separation-reverse flotation.With a grinding fineness of 77.50%-0.075 mm,the magnetic field strength of 1.55 T and the rods media,a rough high-intensity magnetic separation was conducted.Next,rough concentrate is treated by a cleaning separation under conditions of grinding fineness of-0.038 mm 84.00%,the magnetic field strength of 1.40 T and the net media.And rou...