滚筒内颗粒混合过程的实验研究

通过自行设计搭建的滚筒实验平台，以玻璃珠为颗粒材料，探究了不同尺寸颗粒的混合/分离过程，并测量不同操作参数下的滚筒功率消耗.实验结果表明:高填充比时颗粒分离现象更明显，呈现典型的小颗粒被大颗粒包围的现象.在低填充比时，对于尺寸接近的颗粒不同转速下的颗粒分离现象不明显.颗粒粒径差距越大，颗粒分离现象越明显.随着滚筒转速和填充比的逐渐增大，功率消耗逐渐增大，而相比之下功率消耗对粒径比的敏感性比较低.

Experimental Study on Particle Mixing Process in Rotating Drum

The mixing and separating process of different-sized particles in a self-designed rotating drum were explored， where the glass beads were taken as particles. The power consumption of rotating drum under different operating parameters were measured. The results show that the particle separation is more evident when the drum is operated at high fill level， where the small particles surrounded by large particles are mostly observed. When the filling rate is low， it is unobvious for the particle separation of the similar size particles at different rotating speeds. The larger difference of the particle size， the more particle separation occurs. With the increasing rotational speed and fill level， the power consumption increases， while the power consumption is relatively less sensitive to the particle size ratio.