GE Zhenzhoua ， HE Yaquna, b ， XIE Weininga ， WANG Shuaib
（a. School of Chemical Engineering and Technology； b. Advanced Analysis & Computation Center， China University of Mining & Technology， Xuzhou 221116，China）
Abstract：A Hardgrove machine with a power recorder device was used to simulate effects of fines on grinding behavior of coarse particles in E-type VSP by mixing different percentage of pure pyrites in coarse coals. Through the grading analysis of broken product and the numerical calculation by Matlab of grinding energy，the differences in productivity and energy and other features with different fines content was revealed. The experimental results indicate that the first-order grinding kinetic is circumscribed. The appropriate content of fines can enhance the grindability of coarse particles，but excess fines obstrucs that and increase energy consumption. The classic energy-particle size reduction model can be used to describe the characteristics of energy with different percentage of fines in Hardgrove machine.
Keywords: fine powder; E-type vertical spindle pulverizer; grinding kinetic; grinding energy; energy model
文章编号：1008-5548（2016）04-0083-05
DOI：10.13732/j.issn.1008-5548.2016.04.019
收稿日期：2015-12-05， 修回日期：2016-04-06，在线出版时间：2016-08-02。
基金项目：国家自然科学基金项目，编号 ：51274196，51404267；中国矿业大学大学生创新创业基金资助项目，编号：201521。
第一作者简介：戈振州（1992—），男，硕士研究生，研究方向为磨矿过程与模拟。E-mail：gzz@cumt.edu.cn。
通信作者简介：何亚群（1963—），男，博士，教授，博士生导师，研究方向为洁净能源技术、二次资源综合利用技术及矿物加工过程计算机模拟优化。 E-mail: yqhe@cumt.edu.cn。
