摘要
应用离散元仿真和实际研磨试验的方式,研究了全方位行星球磨机介质和物料的碰撞特性,验证了在离散元碰撞模型中同时引入球磨介质和被研磨物料的可行性。结果表明,随着行星盘的翻转,磨罐内研磨介质及物料的分布状态随行星盘的翻转发生周期性变化;球磨介质对于物料颗粒的研磨破碎作用大于冲击破碎作用;无量纲化处理后新增比表面积和总碰撞能损失的相关系数为0.99841,离散元仿真和实际研磨试验结果反映出的研磨效果随转速变化的趋势相近。
The collision characteristics of medium and material in omni-directional planetary mill were studied by means of DEM simulation and actual grinding test,and the feasibility of including not only grinding medium but also particles(ore/powder)in the simulation is verified.The results showed that the distribution of grinding medium and particles in the grinding tank changed periodically with the turn of planetary disk.The grinding crushing effect of grinding medium is greater than that of impact crushing.The correlation coefficient between the new specific surface area and the total impact energy loss was 0.99841 after dimensionless treatment.The trend of grinding effect with the change of rotation speed reflected by the results of discrete element simulation and actual grinding test was similar.
作者
刘红梅
艾闻博
余浩
张健
陈宇峰
LIU Hongmei;AI Wenbo;YU Hao;ZHANG Jian;CHEN Yufeng(School of Mechanical Engineering,Nantong University,Nantong 226019,Jiangsu,China;School of Transportation and Civil Engineering,Nantong University,Nantong 226019,Jiangsu,China)
出处
《有色金属（选矿部分）》
CAS
北大核心
2022年第4期125-129,140,共6页
Nonferrous Metals（Mineral Processing Section）
基金
江苏省经济和信息化委员会科研项目(201703、201702)
南通大学博士启动项目(2018-33)。
关键词
全方位行星球磨机
离散元法
碰撞
比表面积
omnidirectional planetary ball mill
discrete element method
collision
specific surface area
