基于Archard磨损模型的二元颗粒球磨机衬板磨损分析  

Wear Analysis of the Lining Plate of Binary Particle Ball Mill Based on Archard Wear Model

作　　者：马道明 李同清 尹自信 黄宸珂 陈益楠 吴涛 MA Daoming;LI Tongqing;YIN Zixin;HUANG Chenke;CHEN Yi′nan;WU Tao(School of Mechanical Engineering,Jiangsu Ocean University,Lianyungang 222005,Jiangsu,China;School of Mechanical and Electronic Engineering,Suzhou University,Suzhou 234000,Anhui,China;Applied Technology School,Jiangsu Ocean University,Lianyungang 222005,Jiangsu,China)

机构地区：[1]江苏海洋大学机械工程学院,江苏连云港222005 [2]宿州学院机械与电子工程学院,安徽宿州234000 [3]江苏海洋大学应用技术学院,江苏连云港222005

出　　处：《有色金属（选矿部分）》2024年第10期105-114,共10页Nonferrous Metals（Mineral Processing Section）

基　　金：安徽省教育厅自然科学研究重点项目(2022AH051380)。

摘　　要：作为球磨机的主要易损部件,衬板在运行过程中会受到钢球的连续冲击和挤压摩擦导致磨损。基于Archard模型,针对球磨机内5 mm和10 m两种尺寸的介质,在无衬板、不同衬板形状、衬板高度条件下进行了等数量混合的模拟,旨在深入研究这些不同状态下颗粒的运动行为及其对衬板磨损的影响。通过这一研究,期望能够更深入地理解球磨机衬板的分层和磨损机理,进而优化衬板性能、提高磨机效率,并减少球磨机衬板的磨损。经过模拟仿真,得出以下结论:1)颗粒分层现象源于端盖效应和提升条对不同颗粒提升能力的差异。在无提升条时,小颗粒因轻而集中在筒体中心,大颗粒则因重而分布于外围。引入提升条后,小颗粒趋于在筒体两端聚集,形成新的轴向分布,而大颗粒分布相对稳定。2)矩形提升条相比梯形更易导致衬板磨损,但提升条高度增加时,筒体摩擦磨损减小。这模拟结果受限于Archard模型,因其未考虑冲击磨损的影响。As the main vulnerable component of the ball mill,the lining plate is subject to continuous impact and extrusion friction from steel balls during operation,resulting in wear.This article adopts the Archard model to conduct simulations on the mixing of equal quantities of two sizes of media,5 mm and 10 mm,inside the ball mill under the conditions of no lining plate,different lining plate shapes,and lining plate heights.The aim is to delve deeply into the motion behavior of particles under these different conditions and their impact on lining plate wear.Through this research,the author hopes to gain a deeper understanding of the stratification and wear mechanisms of the ball mill lining plate,further optimize lining plate performance,improve mill efficiency,and reduce the wear of the ball mill lining plate.After simulation and analysis,the following conclusions are drawn:1)The particle stratification phenomenon is caused by the end cover effect and the difference in lifting ability of the lifting bars for different particles.In the absence of lifting bars,small particles tend to concentrate in the center of the cylinder due to their lighter weight,while large particles distribute around the periphery due to their heavier weight.When lifting bars are introduced,small particles tend to gather at both ends of the cylinder,forming a new axial distribution,while the distribution of large particles remains relatively stable.2)Rectangular lifting bars tend to cause greater wear on the lining plate compared to trapezoidal lifting bars.However,as the height of the lifting bars increases,the frictional wear of the cylinder gradually decreases.This simulation result is limited by the Archard model,which fails to take into account the influnce of impact wear.

关 键 词：Rocky DEM 衬板磨损 球磨机 Archard磨损模型 

分 类 号：TD453[矿业工程—矿山机电]