球磨机磨球冲击物料过程特性分析  

Characteristic analysis on process of grinding ball impacting charge in ball mill

作　　者：吴琼[1] 柏杨[1] 张加官 董海[1] 叶旭初[1] 

机构地区：[1]南京工业大学材料科学与工程学院,江苏南京210009

出　　处：《矿山机械》2014年第1期68-72,共5页Mining & Processing Equipment

基　　金：国家重点基础研究发展计划(2009CB623100)

摘　　要：运用Hertz理论、相似原理及能量守恒理论,用简单冲击粉碎试验装置对冲击物料过程进行分析。结果表明,冲击物料是弹塑性形变过程,冲击力模型的理论值更符合实际值,理论值与实际值误差为10%左右。冲击力大小受冲击势能和钢球直径的影响,冲击势能与冲击力不呈正比关系;冲击应力和粉磨效果主要受冲击势能影响;等冲击势能作用下,冲击应力相等,粉磨效果也相等。The process of grinding ball impacting the charge in a simple lab mill was analyzed by using Hertz theory, similarity principle and energy conservation theory. The analysis results showed that the impacting process was an elastic-plastic deformation process and the theoretical impact value approached to the actual one with error of 10%. The impact varied with the impacting potential energy and the diameter of the grinding ball, and the impacting potential energy was not proportional to the impact; the impact stress and the grinding effects were mainly determined by the impacting potential same impact stress and the same grinding effects. energy; equal impacting potential energy brought about the

关 键 词：球磨机 磨球 Hertz理论 冲击力 粉磨效果 

分 类 号：TD453[矿业工程—矿山机电]