行星磨中研磨体级配对水泥熟料破碎效率的影响  

Effect of Grinding Media Proportion on Breakage Efficiency of Clinker in a Planetary Mill

作　　者：张柏林[1] 钱海燕[1] 敖林[1] 

机构地区：[1]南京工业大学材料科学与工程学院,南京210009

出　　处：《硅酸盐通报》2011年第4期930-933,共4页Bulletin of the Chinese Ceramic Society

基　　金：国家重点基础研究发展规划资助项目(2009CB623103)

摘　　要：本文对卧式行星磨中研磨体级配对水泥熟料的破碎速率和初始破碎分布函数进行研究,实验所用研磨体级配为φ20∶φ16∶φ12=2∶5∶3、φ20∶φ16∶φ12=1∶6∶3、φ16∶φ12∶φ10=5∶3∶2、φ16∶φ12∶φ10=5∶4∶1、φ16∶φ10=5∶5和φ16∶φ10=3∶7,物料为2.36～3.35 mm粒级的水泥熟料。研究表明:不同级配的研磨体对水泥熟料的粉磨遵循一级粉磨动力学方程。总体而言,破碎速率Si随研磨体中大尺寸钢球所占比例的增大而提高;初步研究认为研磨体的级配对初始破碎分布参数有一定的影响,同一粒级水泥熟料的γ值波动较小,φ值和β值在研磨体级配为φ16∶φ10=3∶7时达到最大值。Abstract： The objective of this study is to investigate the effect of ball proportion on the grinding kinetics of cement clinker in a horizontal planetary mill. The grinding media proportions used for the tests were φ20：φ16：φ12=2：5：3、φ20：φ16：φ12=1：6：3、φ16：φ12：φ10=5：3：2、φ16：φ12：φ10=5：4：1、φ16：φ10=5：5 and φ16：4,10=3：7 and feed size was 2.36-3.35 mm monosize fractions. The specificrates of breakage and primary breakage distribution function were compared for different proportion ball. Result shows that cement clinker obeys first-order breakage kinetics of different proportion grinding media. In general, the specific rates of breakage Si increases as the large-size ball in grinding media. The grinding media proportion has some effect on the primary breakage distribution parameters. The γ- values of the same size fraction cement clinker have small fluctuation, the φ-values and β-values reach maximum values while the grinding media proportion is φ16：φ10 =3： 7.

关 键 词：粉磨动力学 研磨体级配 破碎速率 初始破碎分布函数 

分 类 号：TU528[建筑科学—建筑技术科学]