基于离散元方法的立式螺旋搅拌磨机工作性能

Working performance of vertical screw stirring mill based on discrete element method

对影响立式螺旋搅拌磨机工作性能的主要结构及特征参数进行分析研究,提出了关键工作参数选择方法。基于离散元方法,首先建立了立式螺旋搅拌磨机的仿真模型,分析了主轴转速、搅拌器导程和研磨介质尺寸分布对磨矿性能的影响;然后,提出综合磨矿性能指标,对各参数进行正交试验,得到磨矿效果的量化值;最后,得到在特定权重系数下的最优工作参数组合,为磨机的优化设计提供了参考方法。

The main structure and characteristic parameters affecting the working performance of vertical screw stirring mill were analyzed and studied,and the selection method of key working parameters was proposed.Based on the discrete element method,the simulation model of vertical screw stirring mill was established,and the effects of spindle speed,agitator lead and grinding medium size distribution on grinding performance were analyzed.The comprehensive grinding performance index was put forward,orthogonal tests were carried out for each parameter,and the quantitative value of grinding effect was obtained,and then the optimal working parameter combination under specific weight coefficient was obtained,which provided a reference method for the optimal design of the mill.