以前对筛分过程的研究是测定、分析、研究筛上量或通过筛网重量时间的变化。如按此法,筛上量分为筛分速度大的初期和筛分速度小的后期二部分。为研究筛分过程机理以筛分后期为对象进行基础试验,筛上装有许多筛上 Previous studies of the screening process have been to measure, analyze, study changes in the amount of sieve or time passed through the screen. According to this method, the screen size is divided into early screening speed and early screening of small two parts. In order to study the mechanism of screening process, the basic test was carried out for the later stage of screening. There were many sieves