(Material Department of Zhejang University Hang Zhou,310027)
Abstract
The paricle distribution has been analysed theoretically in this paper. The classfication space is divided into“inside”and “outside”,the definition o{.the:{ine:particle:ratio, and the main factors which influence the ratio are also given. The fine particle ratio may increase more than 70% has been proved by experiment when the secondary air is led into the classifi-
er.
Keywords：secondaΓy air,fine paΓticleratio、ultra-fineclassifier
First Author:杜文博，1986年毕业于浙江大学材料系，于国家建材局
合肥水泥研究设计院工作.1991年于浙江大学攻读硕士研究生毕
业后，留校从事超细粉体分级的研制、粉粒体材料的脉冲气力输送
和非金屑矿粉的活化改性等课题的研究.现为浙江大学讲师，承担
“粉体工程”的教学工作.
DOI：0.13732/j. issn. 1008-5548.1995.05.003
CLC No:Vdl.1,Nb.3,7-1l
