(1. 东北大学 资源与土木工程学院，沈阳 110819； 2. 内蒙古科技大学 矿业与煤炭学院，包头 014010； 3. CITIC Pacific Mining Management Pty Ltd., 45 St. Georges Terrace, Perth, WA6000, Australia)
摘 要: 在相同的球磨条件下，对4种窄粒级的绿泥石进行实验室分批湿式球磨试验。结果表明：4种粒级绿泥石的磨矿动力学都遵循一阶磨矿动力学，球磨0.25~0.5 mm的绿泥石时获得最大的破碎速率函数Si=0.35 min-1，正常的破碎粒级范围应该小于0.5 mm；在较短的磨矿时间内，0.25~0.5 mm绿泥石的细粒级产出具有明显的零阶产出特征；采用G-H算法获得0.25~0.5 mm粒级绿泥石的累积破碎分布函数Bij，利用磨矿总体平衡动力学模型，对粒级为0.25~0.5 mm的绿泥石进行球磨模拟仿真计算，试验结果与模拟仿真结果高度一致。
关键字: 绿泥石；湿式球磨；总体平衡动力学模型；破碎速率；累积破碎分布函数
（1. School of Resources & Civil Engineering, Northeastern University, Shenyang 110819, China; 2. School of Coal & Mining Engineering, Inner Mongolia University of Science & Technology, Baotou 014010, China; 3. CITIC Pacific Mining Management Pty Ltd., 45 St. Georges Terrace, Perth, WA6000, Australia）
Abstract:Under an invariant mill environment, batch wet ball grinding studies were carried out by grinding four mono-sized fractions of single mineral of chlorite. The results show that all mono-sized fractions of chlorite follow the first-order breakage mechanism. The maximum breakage rate for chlorite, obtained in the feed size fraction of 0.25-0.5 mm, is 0.35 min-1. The normal breakage behavior is obtained when the feed size is less than 0.5 mm. The fine fraction output for 0.25-0.5 mm size fractions of chlorite has a clear the zero-order output characteristics at a relatively short grinding time. The cumulative breakage distribution functions for 0.25-0.5 mm size fractions of chlorite are obtained using G-H algorithm. The simulated product size distribution data obtained，using the discrete-size, continuous-time Population Balance Model (PBM), are consistent with experimental data for 0.25-0.5 mm size fractions of chlorite.
Key words: chlorite; wet ball grinding; population balance model; breakage rate; cumulative breakage distribution function
