基于离散元的立式磨粉磨方式研究  

Research on Grinding Method of Vertical Roller Mill Based on Discrete Element Method

作　　者：郑刚[1,2] 刘伟 张玉宝 ZHENG Gang;LIU Wei;ZHANG Yu-bao(College of Mechanical Engineering,Inner Mongolia University of Science and Technology,Baotou 014010,China;Baotou Bailiji Technology Development Co.,Ltd.,Baotou 014030,China)

机构地区：[1]内蒙古科技大学机械工程学院,内蒙古包头014010 [2]包头市百力集科技开发有限公司,内蒙古包头014030

出　　处：《机械工程与自动化》2018年第5期26-28,共3页Mechanical Engineering & Automation

基　　金：内蒙古自治区自然科学基金资助项目(2014MS0534)

摘　　要：在离散元软件EDEM中建立磨辊碾压物料颗粒的离散元模型后进行模拟仿真,以分析柱辊、锥辊和胎辊三种粉磨方式下的粉磨效果。分析结果表明:不同粉磨方式下最大磨辊压力无显著性变化;分析物料颗粒接触数量和接触矢量得到胎辊方式下颗粒积聚程度和挤压程度优于其他两种方式,粉磨效果最佳,柱辊粉磨方式下粉磨效果较差。利用后处理输出磨辊压力与位移的数据,结合数学知识计算出柱辊、锥辊和胎辊三种粉磨方式的做功,得出胎辊粉磨方式消耗的能量最多,柱辊次之,锥辊最小,结合后处理输出不同粉磨方式下颗粒具有的总能量图验证了这一结果的正确性。整个仿真得出的结果可以为立磨粉磨方式的选择提供参考。To analyze the grinding effects of three grinding modes with column roller,cone roller and tire roller,the discrete element models of the rollers and compacted material particles were established in the discrete element software EDEM,and simulation analysis was performed.It is concluded that there is no significant change in maximum roller pressure under different grinding methods.In perspective of the contact number and the contact vector of the material particles,the tire roller mode was the best in three methods,and the grinding effect of the column roller grinding method was poor.Through post-processing,the roll pressure and displacement data were outputted.Combined with knowledge of mathematics,the work done by the three grinding methods were calculated,and the consumption energy of three milling method were calculated.The results show the tire roller grinding method consumes the most energy,followed by the column roller and the cone roller.The result of the whole simulation can provide a theoretical support and reference for the selection of vertical mill grinding method.

关 键 词：离散元 立式磨 粉磨方式 接触矢量 

分 类 号：TP391.7[自动化与计算机技术—计算机应用技术]