内蒙古某难处理铁矿石选矿试验

Experiment on Beneficiation of a Refractory Iron Ore in Inner Mongolia

为确定内蒙古某微细粒、低品位、难选铁矿石的选矿工艺流程,在对矿石性质分析的基础上进行了选矿试验。结果表明,采用磨矿—1粗1精弱磁选—弱磁选尾矿再磨后1粗1精高梯度强磁选流程处理该矿石,可获得铁品位为65.30%、回收率为48.57%的弱磁选精矿,以及铁品位为60.25%、回收率为32.37%的高梯度强磁选精矿,综合精矿铁品位为63.18%、回收率为80.94%。

In order to determine the process flow of fine particle, low grade and refractory iron ore in Inner Mongolia, ex- periments were carried out based on the analysis of ore properties. The results showed that low intensity magnetic concentrate with iron grade of 65.30% and recovery of 48.57% and high gradient high intensity magnetic concentrate with iron grade of 60.25% and recovery of 32.37% were obtained by the process of grinding-one roughing and one cleaning low intensity mag- netic separation-low intensity magnetic separation tailing regrinding and one roughing and one cleaning high gradient high in- tensity magnetic separation. Total iron concentrate contains iron grade of 63.18% with Fe recovery of 80.94%.