基于检测球的球磨机磨矿介质运动试验分析  

Experimental Analysis of Grinding Medium Movement in Ball Mill Based on Detecting Ball

作　　者：尹自信 李同清 YIN Zixin;LI Tongqing(School of Mechanical and Electronic Engineering,Suzhou University,Suzhou 234000,Anhui,China;School of Mecha nical Engineering,Jiangsu Ocean University,Lianyungang 222005,Jiangsu,China)

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

出　　处：《有色金属（选矿部分）》2022年第1期124-129,共6页Nonferrous Metals（Mineral Processing Section）

基　　金：宿州学院博士科研启动基金(2020BS004)。

摘　　要：针对球磨机磨矿介质运动信息很难测量的问题,以Φ520mm×260mm试验球磨机为研究对象,基于设计的检测球装置分析了不同转速率工况下磨矿介质运动参数的变化规律,并提出了一种试验验证离散元仿真的方法。研究结果表明,检测球加速度主要介于0-3.3g,球磨机的转速率越大,加速度的波动范围越大,磨矿介质的冲击碰撞越明显;检测球角速度主要介于0-31rad/s,球磨机的转速率越大,角速度的波动范围越大,磨矿介质的研磨作用越明显;检测球试验与离散元仿真的单位质量转动动能累积分布基本一致,说明检测球试验验证离散元仿真是有效的。Aiming at the problem that it is difficult to measure the movement information of grinding media in ball mill, the Φ520 mm×260 mm test ball mill was taken as the research object, and the variation law of grinding media movement parameters under different rotation rates was analyzed based on the designed detection ball device, and a method for experimental verification of discrete element simulation was proposed.The results showed that the acceleration of the test ball was mainly between 0-3.3 g, the higher the rotation rate of the ball mill was, the larger the fluctuation range of the acceleration was, and the more obvious the impact and collision of the grinding medium was.The angular velocity of that detect ball was mainly between 0 and 31 rad/s, the larger the rotation rate of the ball mill was, the larger the fluctuation range of the angular velocity was, and the more obvious the grinding effect of the grinding medium was.The cumulative distribution of the kinetic energy per unit mass of the DEM simulation was consistent with that of the ball-in-test test, which indicated that the DEM simulation was effective.

关 键 词：球磨机 检测球 转速率 磨矿介质 

分 类 号：TD921.4[矿业工程—选矿]