基于PFC3D的新型球磨机数值模拟研究
投稿时间:2014-12-31  修订日期:2015-02-14  点此下载全文
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作者单位E-mail
李笑同 延边大学工学院 578650574@qq.com 
朴香兰 延边大学工学院 piaoxl@ybu.edu.cn 
中文摘要:为探索能够提高球磨机生产效率和延长球磨机研磨寿命的途径,利用PFC3D程序,建立了传统球磨机与变结构球磨机的离散元模型,针对不同转速、不同衬板高度,对磨介运动进行了仿真与分析,确定了辅助结构–旋转档板的位置。通过模拟实验发现,研磨腔内磨球的下落速度由原来的2m/s,增长到了5m/s左右。有效地提高了磨介的冲击力,避免了传统球磨机需要通过改变研磨介质磨粒的质量和滚筒的直径等参数来提高研磨效率的局限性。
中文关键词:球磨机  PFC3D模拟  磨料介质  冲击力
 
Study on the movement of grinding medium in ball millbased on PFC3D
Abstract:In order to explore the ways to improve the fatigue life and the production efficiency of the ball mill, the paper established the discrete element model of the traditional ball mill and also the ball mill with variable structures. And this paper carried out an analysis and simulation of the motion of grinding medium with different rotational speeds and scale board heights to determine the position of the rotational board. Through the simulation experiments we found that the falling speed of the grinding ball in grinding chamber rose from 2 m/s to 5 m/s. This behavior could not only increase the impact force of grinding medium effectively but also avoid the limitation of improving the grinding efficiency of the traditional ball mill by changing the parameters of the quality of grinding grain and the diameter of the cylinder, etc.
keywords:ball mill  simulation of PFC3D  grinding medium  impact force
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