针对粉煤灰中沉珠粒度组成较细的特性，论述了采用水力旋流器分边沉珠的基本原理，给出了水力旋流器分边沉珠的分级粒度和处理能力计算公式。并进行了一段分选和二段分选试验研究，研究结果证明采用水力旋流器进行分级可以实现沉珠的分选或富集。 Aiming at the characteristics of the finer particle size of the beads in fly ash, the basic principle of using the hydroclone to separate the beads is discussed. The formulas for calculating the classified particle size and processing capacity of the hydroclone are given. And a section of sorting and two sections of sorting test research, the results show that the use of hydrocyclones grading can achieve separation or enrichment Shen beads.