ZHANG Fangshua， b ， CHEN Chuanhuia， b ，ZHANG Linjina， b ， BAI Yanga， b ， YE Xuchua， b
（a. College of Materials Science and Engineering； b. State Key Laboratory of Materials-oriented Chemical Engineering， Nanjing University of Technology， Nanjing 210009， China）
Abstract：To investigate the effect of grinding media diameter on zinc oxide particle size in stirred mill， grinding media with diameters from 0.4 to 0.6 mm and 0.8 to 1.0 mm were selected. Breakage mechanisms were analyzed using grinding kinetics model. The results show that grinding with media diameters from 0.4 to 0.6 mm for 30 min， the minimum particle size of zinc oxide can be achieved， i.e. d50 is 0.9 μm and d90 is 2.41 μm. The breakage rate of zinc oxide particles grinded with media diameters from 0.4 to 0.6 mm is obviously greater than that of 0.8 to 1.0 mm. The breakage products distribute in small diameter size range. The abrasion and fracture coexist during the grinding process. Using media diameters from 0.4 to 0.6 mm， the breakage proportion caused by abrasion is greater than using those of 0.8 to 1.0 mm.
Keywords： zinc oxide； grinding media； grinding kinetics
文章编号：1008-5548（2013）02-0065-05
DOI：10.3969/j.issn.1008-5548.2013.02.016
收稿日期：2012-09-28，修回日期：2012-11-28。
第 一作者简介：张方舒（1988—），女，硕士研究生，研究方向为材料学。E-mail ：zhangfangshu88@yahoo.cn。
通信作者：叶旭初（1957—），男，教授，博士生导师，研究方向为粉体加工、计算机模拟。 E-mail ：yexuchu@njut.edu.cn。
