Effect of Feed Concentration on Separation Performance of Cyclone Separation Column

被引：2
|
作者：
Hou D.-X. [1 ]
Wei D.-Z. [1 ]
Cui B.-Y. [1 ]
Zhao Q. [1 ]
机构：
[1] School of Resources & Civil Engineering, Northeastern University, Shenyang
来源：
Dongbei Daxue Xuebao/Journal of Northeastern University | 2022年 / 43卷 / 05期
关键词：
Cyclone separation column; Feed concentration; Numerical simulation; Particle movement behavior; Separation performance;
D O I：
10.12068/j.issn.1005-3026.2022.05.016
中图分类号：
学科分类号：
摘要：
The effects of feed concentration on the separation performance and particle movement behavior of the cyclone separation column were investigated based on numerical experiments. The results show that the increase of feed concentration reduces the recovery of particles in the underflow, increases the cut size, and decreases the misplacement of fine particle in the underflow. However, an excessively high feed concentration results in coarse particles misplaced in overflow. A high feed concentration means that the particle aggregation degree in the cyclone separation column, and the amounts of particles moving with the internal swirling flow increase. The axial velocity of particles increases with the increase of feed concentration on the Z=-400 mm plane. The internal swirling flow region that the particles moving towards the spigot need to pass through increases, causing the increase of the possibility of the coarse particles being trapped by the inner swirling flow. The increase of the feed concentration reduces tangential velocity of particles on the Z=-400 mm plane, leading to the decrease of centrifugal force on particles and the increase of the possibility of particles migrating inward, further increasing the aggregation of particles in the internal swirling flow region. © 2022, Editorial Department of Journal of Northeastern University. All right reserved.
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页码：718 / 723
页数：5
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