基于离散元法的球磨机介质运动仿真分析
The Simulation and Analysis on Medium Motion in Ball Mill by Discrete Element Method

作者: 李 力 , 张峻玮 :三峡大学机械与材料学院,宜昌;

关键词: 球磨机离散元法单直径运动配比运动仿真分析Ball Mill Discrete Element Method Movement of Single Diameter of Steel Balls Movement of Mixed Steel Balls Simulation Analysis

摘要:
基于离散元法,通过仿真试验来研究球磨机单直径钢球运动和钢球配比运动。仿真结果表明,上述两种运动形式下的钢球运动形态基本一致,主要由泻落运动、抛落运动和离心运动组成。在比较低的转速率下钢球一般只作泻落运动且运动缓慢难以形成比较大的冲击力;随着转速率增大,钢球会有明显的抛落运动出现,抛落点的底脚区一般就在筒体的底部附近;转速率继续增大时,抛落运动就更加明显,抛落的底脚区会向上移动并加快钢球冲击速度。

Abstract:
Based on the discrete element method, we carry out the research of the motion of single diameter of steel balls and mixed steel balls by the simulation test. Simulation results show that the motion form of steel balls in the above two kinds of movement is basically consistent, which mainly includes cascading movement, cataracting movement and eccentric exercise. Steel balls generally generate cascading movement and move slowly, and it is difficult to form a larger impact force under the low rate of speed; With the rate of speed increasing, steel balls generate obvious cataracting movement, and drop points of steel balls are generally near the bottom of the cylinder; With the rate of speed continuing to increase, cataracting movement is more obvious, and drop points of steel balls moved up and the impact velocity of steel balls is also faster.

文章引用: 李 力 , 张峻玮 (2013) 基于离散元法的球磨机介质运动仿真分析。 机械工程与技术, 2, 157-161. doi: 10.12677/MET.2013.24030

参考文献

[1] 王泳嘉, 邢纪波 (1991) 离散单元法及其在岩土中的应用. 东北工学院出版社, 沈阳.

[2] Khanal, M. and Morrison, R. (2008) Discrete element method study of abrasion. Mining Engineering, 21, 751-760.

[3] 夏恩品 (2010) 球磨机介质运动数值分析及介质直径实验研究. 硕士学位论文, 昆明理工大学, 昆明.

[4] 美国Itasea咨询公司 (2003) PFC 3D v3.0用户手册.

[5] 赵敏, 卢亚平, 潘英民 (2001) 粉碎理论与粉碎设备发展评述. 矿冶, 2, 36-41.

[6] 王卓 (2010) 球磨机磨球直径选择及数值模拟研究. 硕士学位论文, 昆明理工大学, 昆明.

[7] Kiangi, K. and Moys, H. (2008) Particle filling and size effects on the ball load behaviour and power in a dry pilot: Experimen- tal study. Powder Technology, 187, 78-87.

[8] 李文亮, 杨涛, 于向军, 等 (2007) 国外大型球磨机发展现状. 矿山机械, 1, 13-15.

[9] Khanl, M. (2001) Charge behaviour and power consumption in ball mills: Sensitivity to mill operating conditions, liner geome- try and charge composition. International Journal of Mineral Processing, 63, 79-114.

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