螺旋溜槽重选工艺在安徽周油坊铁矿厂的应用

Application of the spiral chute gravity-separation process at Zhouyoufang iron ore Dressing Plant in Anhui Province

为了更好地回收矿石中的铁资源,安徽周油坊铁矿厂引入螺旋溜槽重选设备,对弱磁-重选-强磁-反浮选、重选-弱磁-强磁-反浮选、弱磁-强磁-重选-反浮选三种重选流程进行实践和优化,并分别对螺旋溜槽应用效果进行了全面的考察和对比,最终确定采用弱磁-强磁-重选-反浮选流程,使精矿产率超过15%,精矿品位达65%,有效地回收了矿石中铁资源,实现了"能收早收"的选矿原则,同时也大大节约了生产成本。

The iron ore produced by zhouyoufang Mine Anhui Province is dominately of magnetite and specularite with uneven embedded size. For better recovery of middlings, the spiral chute gravity separation process is introduced. Based on the result of comparison of the following 3 separation processes:low-intensity magnetic-gravity-high-intensity magnetic-reverse flotation process;gravity-low-intensity magnetic-high-intensity magnetic-gravity-reverse flotation process, as well as a comprehensive evaluation and comparison of the performance of the spiral chute separator, the low-intensity magnetic-high-intensity magnetic-gravity-reverse flotation process is finally selected. Application of this process has led to an increase of yield of concentrate of over 15% with its grade raised up to around 65%, effective recovery of middlings resource and drastic reduction of production costs, making it possible for the plant to operate by following the principle of reclaiming all mineral resources at an earliest time possible.