• CN:11-2187/TH
  • ISSN:0577-6686

机械工程学报 ›› 2018, Vol. 54 ›› Issue (7): 205-215.doi: 10.3901/JME.2018.07.205

• 制造工艺与装备 • 上一篇    下一篇

颤振球磨机中颗粒群粒度特性影响因素试验研究

梁曼, 孙毅, 单继宏, 金晓航   

  1. 浙江工业大学特种装备制造与先进加工技术教育部重点实验室 杭州 310014
  • 收稿日期:2017-04-11 修回日期:2017-12-03 出版日期:2018-04-05 发布日期:2018-04-05
  • 通讯作者: 孙毅(通信作者),男,1966年出生,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
  • 作者简介:梁曼,女,1991年出生,博士研究生。主要研究方向为粉磨机械与装备。E-mail:1111402120@zjut.edu.cn
  • 基金资助:
    国家自然科学基金(51675484,51275474)和浙江省自然科学基金(LZ12E05002,Y15E050064)资助项目。

Experiment on the Influence of Features of the Broken Particle Size in a Flutter Ball Mill

LIANG Man, SUN Yi, SHAN Jihong, JIN Xiaohang   

  1. Key Laboratory of Special Purpose Equipment and Advanced Processing Technology of Ministry of Education, Zhejiang University of Technology, Hangzhou 310014
  • Received:2017-04-11 Revised:2017-12-03 Online:2018-04-05 Published:2018-04-05

摘要: 颗粒粒度特性对粉体颗粒的应用范围和产品性能有很大影响,为研究颤振球磨机的运动参数(转速率、振动幅度和振动频率)和研磨介质形状对颗粒群粒度特性的影响,进行了十组不同工况的粉磨试验。通过对颗粒群粒度分布特性参数:中位粒径D50,粒度分布宽度WPSD,比表面积S和平均粒径Daps的分析以及极差法处理结果,得到颤振球磨机在转速率85%、振动幅度4 mm、频率12 Hz的工况下微细粉体的形成和积累量最大,极限粒径值最小,且球形介质在颤振球磨机中的粉磨效果明显优于短柱形介质。利用SEM图像观测粉体颗粒的团聚方式以及团聚颗粒的粒径大小,图像分析结果与粉磨试验的数据分析结果(平均粒径值)基本吻合。试验研究结果为颤振球磨机物理法制备微细粉体颗粒提供了参考依据。

关键词: SEM图像, 产品粒度特性, 颤振球磨机, 平均粒径, 振动幅度和频率, 中位粒径, 转速率

Abstract: Size distribution of powder has an important effect on the practical product performance and its applications. Ten kinds of grinding tests in the flutter ball mill under different operate conditions are conducted, to study the influence factors on the powder size distribution of the motion parameters of the flutter mill, such as vibration amplitude, frequency and rotation speed as well as the shapes of the grinding media. The characteristic parameters of the particle size distribution has been analyzed including median particle diameter D50, width of the particle size distribution WPSD, specific surface area S and average particle size Daps. Combining with the result of the range-method used in the test of homogeneity, the optimum working condition to form and accumulate fine particles for flutter ball mill has been obtained, which is 4 mm of the vibration amplitude, 12 Hz of the frequency and 85% of the rotating speed with the ball media. The SEM images of the powder particles can give out the agglomerating size of the superfine particles and their agglomerating way. The limit-size of the powder observed in the images is almost consistent with the one calculated from the experimental result. Based on the results, the optimum flutter parameters and media shape has been obtained, which can conduct the practical production of the superfine particles for the flutter ball mill.

Key words: average particle size, features of the broken particle size, flutter ball mill, median particle diameter, rotation speed, SEM image, vibration amplitude and frequency

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