无机盐工业
主管:中海油天津化工研究设计院有限公司
主办:中海油天津化工研究设计院有限公司
   中海油炼油化工科学研究院(北京)有限公司
   中国化工学会无机酸碱盐专业委员会
ISSN 1006-4990 CN 12-1069/TQ
研究与开发

锆英砂球磨过程中颗粒分布的分形研究

  • 邱占疆 ,
  • 秦学政 ,
  • 秦学红 ,
  • 苑少强 ,
  • 杨跃辉
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  • 1.江苏铸友锆钛科技有限公司,江苏南通 226100;
    2.唐山学院机电工程系
邱占疆(1970— ),男,高级工程师,硕士,主要从事软件开发及粉体制备技术研究;E-mail:898116172@qq.com。

收稿日期: 2019-11-28

  网络出版日期: 2020-05-21

基金资助

唐山学院—江苏铸友锆钛科技有限公司联合实验室项目(2019-007)

Study on fractal characteristics of particle size distribution of zircon sand in ball milling

  • Zhanjiang Qiu ,
  • Xuezheng Qin ,
  • Xuehong Qin ,
  • Shaoqiang Yuan ,
  • Yuehui Yang
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  • 1.Jiangshu Zhuyou Zirconium & Titanium Limited Company of Science and Technology,Nantong 226100,China;
    2.Department of Mechanical and Electrical Engineering,Tangshan College

Received date: 2019-11-28

  Online published: 2020-05-21

摘要

测定了球磨不同时间后锆英砂的粒度分布,计算了其分形维数,并结合颗粒形貌的观察,对球磨过程中粉料的破碎行为做了研究,结果表明:当球磨时间较短时,椭球形原砂被破碎为具有尖锐边角的不规则形状,降低了进一步破碎的难度,破碎效率提高,因此分形维数不断增大;但随着颗粒的细化及其含量的增加,不但自身破碎的难度逐渐增加,而且阻碍了粗颗粒的破碎,故球磨更长时间后分形维数增大的趋势趋缓;同时,锆英砂球磨过程中不同粒度颗粒破碎的难度存在差异,导致随分形维数上升,颗粒分布的离散度快速上升,不利于双峰级配粉的制备。

本文引用格式

邱占疆 , 秦学政 , 秦学红 , 苑少强 , 杨跃辉 . 锆英砂球磨过程中颗粒分布的分形研究[J]. 无机盐工业, 2020 , 52(5) : 56 -58 . DOI: 10.11962/1006-4990.2019-0346

Abstract

The particle size distribution of zircon sand after ball milling at different time was measured and its fractal dimen-sion was calculated,and the fractal characteristics of powder during ball milling were studied by observing the particle mor-phology.The results showed that when the ball milling time was short,ellipsoid sand was broken into irregular shape with sharp edge angle,which reduced the difficulty of further breaking and improved the breaking efficiency,so the fractal dimen-sion increased continuously.However, the formation of a large number of fine particles not only increased the difficulty of further fragmentation,but also hindered the crushing of coarse particles,so the increasing of fractal dimension became slower after ball milling for a longer time.At the same time, the difficulty of fragmentation of the zircon sand with different sizes in ball milling process was different,which led to a rapid increase in the dispersion of particle size distribution with the increas-ing of fractal dimension,which was not conducive to the preparation of powder with grain size distribution.

参考文献

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