分析了国内某大型铁矿半自磨机筒体衬板的磨损规律,以及衬板金属的利用率。基于等寿命法优化衬板结构,并利用专业衬板模拟软件和离散元分析软件(EDEM)模拟了钢球和物料的运动规律。经现场使用证明,优化后的衬板寿命得以延长,金属利用率得到提高。 The abrasion regularity of cylinder liner of a large-scale iron ore semi-autogenous mill in China and the utilization rate of liner metal were analyzed. The lining structure was optimized based on the isostatic method, and the law of movement of the steel ball and the material was simulated by using the professional lining simulation software and the discrete element analysis software (EDEM). The field use proved that the optimized liner life can be extended, metal utilization rate is improved.