摘要
为了解塔磨机中介质球的运动情况,运用离散元法模拟了试验磨机中介质球的运动情况,得到了介质球的典型运动轨迹、速度与动能分布,以及磨机系统的能量耗散。研究结果表明,介质球在磨机内做螺旋上升与下降运动;搅拌器末端的环形料层间研磨效果最佳;介质球的轴向运动影响能量利用率与研磨强度;该塔磨机能量利用率达到26.3%,是传统球磨机的数倍。分析结果对塔磨机的设计及运行参数优化,以及为其大型工程化应用提供了理论依据。
To know the media movement in the tower mill, discrete element method（DEM） was applied to simulate the movement of grinding balls in a pilot-scaled tower mill. Typical movement trajectory, distribution of velocity and kinetic energy of the grinding balls, as well as energy dissipation of the system were obtained.Analysis results showed： the balls rose and fell down spirally in the mill; the grinding effects among annular material layers in the end of stirrer was the best; axial movement of the balls affected energy utilization ratio and grinding intensity; the energy utilization ratio of the tower mill reached 26.3%, which was several times of that of traditional mills.
出处
《矿山机械》
2015年第7期74-78,共5页
Mining & Processing Equipment
关键词
离散元法
塔磨机
介质运动
仿真分析
discrete element method（DEM）
tower mill
media movement
simulation and analysis
