球磨过程中介质群运动区域划分方法研究

doi:10.3901/JME.2020.23.212

机械工程学报 ›› 2020, Vol. 56 ›› Issue (23): 212-225.doi: 10.3901/JME.2020.23.212

扫码分享

球磨过程中介质群运动区域划分方法研究

梁曼^1,2, 孙卫红¹, 孙毅², 项京成²

1. 中国计量大学机电工程学院杭州 310018;
2. 浙江工业大学先进加工技术教育部重点实验室杭州 310014

收稿日期:2019-12-19 修回日期:2020-05-25 出版日期:2020-12-05 发布日期:2021-01-11
作者简介:梁曼,女,1991年出生,博士,讲师。主要研究方向为机械集成系统设计、制造,生丝摩擦、检测技术。E-mail:18a0104152@cjlu.edu.cn;孙毅(通信作者),男,1966年出生,博士,教授,博士研究生导师。主要研究方向为制造业信息化和机电装备设计。E-mail:sunyi@zjut.edu.cn
基金资助:
国家自然科学基金资助项目（51675484和51275474）。

Study on the Method of Dividing Media Motion Region in Ball Milling

LIANG Man^1,2, SUN Weihong¹, SUN Yi², XIANG Jingcheng²

1. College of Mechanical and Electrical Engineering, China Jiliang University, Hangzhou 310018;
2. Key Laboratory of Advanced Processing Technology of Ministry of Education, Zhejiang University of Technology, Hangzhou 310014

Received:2019-12-19 Revised:2020-05-25 Online:2020-12-05 Published:2021-01-11

摘要/Abstract

摘要： 球磨过程中介质群运动状态变化对物料的破碎效率影响极大，通过对介质群运动状态进行区域划分，探究不同球磨工况下的介质群运动区域特征更能有效揭示介质群对物料的破碎方式和有效破碎区域。针对理论划分介质群运动区域过于理想、单一，试验追踪法成本过高的问题，提出了一种介质群运动区域划分的新方法-EDEM网格划分法。首先把筒体的横截面划分为若干个微元，利用数理统计的方法得到介质群位置概率分布函数，获取介质群运动速度区域分布图和碰撞特性区域分布图。然后给出了回转运动、螺旋运动及复合颤振运动三种工况下介质群运动区域的划分实例，并与试验追踪法对比，验证了EDEM网格划分法的准确性和有效性。最后通过粉磨试验中进料的破碎速率和微细颗粒产率探讨了介质群运动区域特性对颗粒的破碎方式和有效破碎区域的影响效果。本研究为优化球磨过程的影响因素和操作参数提供了一种快捷、有效的方法。

关键词: 介质群运动状态, EDEM网格划分法, 速度/碰撞特性区域, 破碎率, 微细颗粒产率

Abstract: The motion morphology of grinding media has an important effect on particles breakage efficiency in ball milling. In order to reveal the broken way and effective broken region when the motion morphology changes in different milling conditions, research on the regional division of the motion morphology of grinding media has been conducted. The theoretical dividing method is too ideal and less application, while the experimental tracking method costs too much time and money. Therefore, a new method of dividing the media motion morphology regions using EDEM grid partition has been proposed. The location function for each grid which is divided from the cross-section of the mill is obtained by the numerical statistics, combined with the regional distributions of media velocity vectors and collision characteristics, the regional distribution examples in three different milling condition, including rotational motion, spiral motion and coupled flutter motion have been provided. The comparison result with the experimental tracking method has verified the validity and availability of the EDEM grid partition method. In the end, the grinding test has been conducted, and the particles' broken way and effective broken region imposed by the media motion morphology has been discussed according to the particles broken effect and broken rate. This conclusion provides a fast and effective method to study and optimize the region changes in different influence factors.

Key words: grinding media motion morphology, EDEM grid partition method, particles' velocity and collision region, crashed rate, productivity of fine particles

中图分类号:

TD453

梁曼, 孙卫红, 孙毅, 项京成. 球磨过程中介质群运动区域划分方法研究[J]. 机械工程学报, 2020, 56(23): 212-225.

LIANG Man, SUN Weihong, SUN Yi, XIANG Jingcheng. Study on the Method of Dividing Media Motion Region in Ball Milling[J]. Journal of Mechanical Engineering, 2020, 56(23): 212-225.

参考文献

[1] 盖国胜,陶珍东.粉体工程[M].北京:清华大学出版社,2009. GAI Guosheng,TAO Zhendong. Powder technology[M]. Beijing:Tsinghua University Press,2009.
[2] 罗春梅,肖庆飞,段希祥,等.球磨机功能转变与节能途径分析[J].矿山机械,2011,39(1):81-84. LUO Chunmei,XIAO Qingfei,DUAN Xixiang,et al. Analysis of function transformation and energy saving ways of ball mill[J]. Mining& Processing Equipment,2011,39(1):81-84.
[3] 夏恩品,董为民.影响球磨机介质运动规律主要因素的试验研究[J].矿山机械,2009,37(19):60-63. XIA Enpin,DONG Weimin. Experimental research of the main factors in influencing the medium movements in the ball mill[J]. Mining& Processing Equipment,2009,37(19):60-63.
[4] TORAMAN O Y,KATIRCIOGLU D. A study on the effect of process parameters in stirred ball mill[J]. Advanced Powder Technology,2011,22(1):26-30.
[5] 卢建坤.基于离散单元法的大型球磨机介质运动分析及参数优化[D].洛阳:河南科技大学,2013. LU Jiankun. Kinematical analysis& parameters optimization of large tumbling ball mill'media based on the discrete element method[D]. Luoyang:Henan University of Science and Technology,2013.
[6] 李永堂,付建华,雷步芳,等.多元低合金耐磨钢破碎机衬板制造工艺研究[J].机械工程学报,2013,49(12):72-77. LI Yongtang,FU Jianhua,LEI Bufang,et al. Research on manufacturing process for complex low-alloyed wear-resisting crusher liner[J]. Journal of Mechanical Engineering,2013,49(12):72-77.
[7] OWEN P,CLEARY P W. The relationship between charge shape characteristics and fill level and lifter height for a SAG mill[J]. Minerals Engineering,2015,83(11):19-32.
[8] GUPTA V K,SHARMA S. Analysis of ball mill grinding operation using mill power specific kinetic parameters[J]. Advanced Powder Technology,2014,25(2):625-634.
[9] SABAH E,ÖZDEMIR O,KOLTKA S. Effect of ball mill grinding parameters of hydrated lime fine grinding on consumed energy[J]. Advanced Powder Technology,2013,24(3):647-652.
[10] KIANGI K K,MOYS M H. Particle filling and size effects on the ball load behavior and power in a dry pilot mill:Experimental study[J]. Powder Technology,2008,197(1):79-87.
[11] 刘军德.基于MEMS的球磨机介质运动测量技术研究[D].杭州:浙江工业大学,2012. LIU Junde. The research of ball mill medium motion measurement based on MEMS[D]. Hangzhou:Zhejiang University of Technology,2012.
[12] LI N,SUN Y,et al. A finite element analysis on effects of alternating load on cylinder of a vibrating ball milling[J]. Procedia Engineering,2011,16(1):95-100.
[13] POWELL M S,WEERASEKARA N S,COLE S,et al. DEM modelling of liner evolution and its influence on grinding rate in ball mills[J]. Minerals Engineering,2011,24(3-4):341-351.
[14] 梁曼,孙毅,纪朋朋,等.正多边形角螺旋衬板对球磨机粉磨效率影响的数值分析[J]. 机械工程学报,2015,51(17):203-212. LIANG Man,SUN Yi,JI Pengpeng,et al. Numerical analysis on regular polygon angle-spiral liners design in a ball mill[J]. Journal of Mechanical Engineering,2015,51(17):203-212.
[15] 樊狄锋,孙毅,毛亚郎,等.球磨机混合运动状态下介质运动形态的分析研究[J].矿山机械,2010,38(5):81-83. FAN Difeng,SUN Yi,MAO Yalang,et al. Analysis of medium motions under the hybrid motion state in the ball mill[J]. Mining& Processing Equipment,2010,38(5):81-83.
[16] POWELl M S,MCBRIDE A T. A three-dimensional analysis of media motion and grinding regions in mills[J]. Minerals Engineering,2004,17(11-12):1099-1109.
[17] MCBRIDE A,GOVENDER I,POWELL M S,et al. Contributions to the experimental validation of the discrete element method applied to tumbling mills[J]. Engineering Computer International Journal of Computer-Aided Engineering,2004,21(2):119-136.
[18] GOVENDER I,POWELL M S,NURICK G N,et al. 3D particle tracking in a mill:A rigorous technology for verifying DEM predictions[J]. Mineral Engineering,2001,10(14):1329-1340.
[19] FRANKE J,CLEARY P W,SINNOTT M D. How to account for operating condition variability when predicting liner operating life with DEM-A case study[J]. Minerals Engineering,2015,73(3):53-68.
[20] CLEARY P W,OWEN P. Effect of liner design on performance of a HICOM^® mill over the predicted liner life cycle[J]. Minerals Engineering,2015,134(11):11-22.
[21] LU G,THIRD J R,MÜLLER C R. Discrete element models for non-spherical particle systems:From theoretical developments to applications[J]. Chemical Engineering Sciences,2015,127(12):425-465.
[22] PAUL W,CLEARY P W,ROB D. Understanding fine ore breakage in a laboratory scale ball mill using DEM[J]. Minerals Engineering,2011,24(3-4):352-366.
[23] ZHONG W Q,YU A B,LIU X J,et al. DEM/CFD-DEM modeling of non-spherical particulate systems:Theoretical developments and applications[J]. Powder Technology,2016,302(11):108-152.
[24] 唐果宁,彭猛.离散磨介群动力学特性数值分析[J].振动与冲击,2009,28(8):184-187. TANG Guoning,PENG Meng. Numerical analysis of dynamic characteristics of discrete grinding media[J]. Journal of Vibration and Shock,2009,28(8):184-187.
[25] 唐果宁,彭猛.振动磨机离散磨介群动力学模型研究[J].中国机械工程,2008,19(11):1347-1350. TANG Guoning,PENG Meng. Research on dynamics model of disperse mill medium group for vibration mill[J]. China Mechanical Engineering,2008,19(11):1347-1350.
[26] SUN Y,HUANG X H,JIN X H. Numerical analysis of the ball mill coupled with the vertical vibration frontiers of energy,materials and information engineering[C]//Switzerland:Advanced Materials Research,2014,1044-1045:638-642.
[27] SUN Y,LIANG M,JIN X H,et al. Experimental and modeling study of the regular polygon angle-spiral liner in ball mills[J]. Chinese Journal of Mechanical Engineering,2017,30(2):363-372.
[28] 梁曼.球磨过程介质群运动区域特性对物料破碎效率的影响机理研究[D].杭州:浙江工业大学,2017. LIANG Man. Influence mechanism of region-character of media motion on grinding efficiency of particles in ball milling[D]. Hangzhou:Zhejiang University of Technology,2017.
[29] 应男.颤振球磨机的介质碰撞能量与粉碎性能的研究[D].杭州:浙江工业大学,2012. YING Nan. Research on charge collision energy and grinding performance of flutter ball mill[D]. Hangzhou:Zhejiang University of Technology,2012.
[30] 梁曼,孙毅,单继宏,等.颤振球磨机中颗粒群粒度特性影响因素试验研究[J].机械工程学报,2018,54(7):205-215. LIANG Man,SUN Yi,SHAN Jihong,et al. Experiment on the influence of features of the broken particle size in a flutter ball mill[J]. Chinese Journal of Mechanical Engineering,2018,54(7):205-215.
[31] 毛亚郎,孙毅,计时鸣,等.落球冲击破碎下的非限制料层夹持形态[J].中国机械工程,2016,27(2):168-172. MAO Yalang,SUN Yi,JI Shiming,et al. Nipped configuration of unconfined particle beds under falling ball impact test[J]. Chinese Journal of Mechanical Engineering,2016,27(2):168-172.
[32] DENIZ V. A study on the specific rate of breakage of cement materials in a laboratory ball mill[J]. Cement and Concrete Research,2003,33:439-445.

球磨过程中介质群运动区域划分方法研究

Study on the Method of Dividing Media Motion Region in Ball Milling

PDF

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 2

编辑推荐

Metrics

本文评价

[1]	梁曼, 孙毅, 单继宏, 金晓航. 颤振球磨机中颗粒群粒度特性影响因素试验研究[J]. 机械工程学报, 2018, 54(7): 205-215.
[2]	梁曼, 孙毅, 纪朋朋, 单继宏, 金晓航. 正多边形角螺旋衬板对球磨机粉磨效率影响的数值分析[J]. 机械工程学报, 2015, 51(17): 203-212.