本文主要研究滑石干式磨矿时,球磨机的转速、球(介质)的充填率(1)及试料的充填率(F),对最终产品粒度的影响和所消耗能量的关系;微粉体的粒度分布和生成速度。研究结果表明:当 F=1时,粉碎效果与球的充填率无关,随磨机转速的减小而下降,但转速为临界转速的85%～95%时,为最好,粉碎能量效率也最高;当1=45%、N/Nc=85%时,产品比表面积最大;当1=30%、45%且长时间磨矿时,出现两个分布指数(n);产品粒度为+6μm 时,n 分别为1.23、1.2;-6μm 时,两者 n 均为1.8,这意味着-6μm 产物的生成速度慢,粉碎效率急剧下降,6μm 为有效临界粒度。试验结果,对提高粉碎效率具有实用价值。 This paper mainly studies the relationship between the influence of the particle size of the final product and the energy consumed when the talc dry grinding, the speed of the ball mill, the filling rate of the ball (medium) and the filling rate (F) of the sample; Particle size distribution and generation speed. The results show that when F = 1, the crushing effect has nothing to do with the filling rate of the ball, but decreases with the decrease of the rotating speed of the mill, but it is the best when the rotating speed is 85% ~ 95% of the critical speed. The crushing energy efficiency The highest specific surface area was obtained when 1 = 45% and N / Nc = 85%, respectively. Two distribution indexes (n) appeared when 1 = 30% and 45% When n is 1.23,1.2 and -6 μm respectively, both n are 1.8, which means that the formation rate of -6 μm product is slow, the grinding efficiency drops sharply, and 6 μm is the effective critical particle size. The test results have practical value for improving the smashing efficiency.