Experimental study on the separation effect based on density in hydrocyclone and the classification effect based on size in water-only cyclone

被引：0
作者：
Dong, Lian-Ping [1 ]
Gao, Jian-Chuan [2 ]
Yang, Hong-Li [1 ]
Fan, Min-Qiang [1 ]
机构：
[1] College of Mining Engineering, Taiyuan University of Technology
[2] Tunlan Coal Washery, Shanxi Coal Electricity Group Co. Ltd.
来源：
Meitan Xuebao/Journal of the China Coal Society | 2014年 / 39卷 / 05期
关键词：
Classification; Cyclone; Partition curve; Separation;
D O I：
10.13225/j.cnki.jccs.2013.1827
中图分类号：
学科分类号：
摘要：
In order to study the effect of particle size and density on the classification and separation of cyclones, separation experiments of <3 mm coal slimes were carried out on a hydrocyclone with 20° cone and a water-only cyclone with 130° cone. Screen and sink-and-float analysis of each size fraction were conducted and the distribution law of particles with different size and density was obtained. The results show that classification predominates in hydrocyclone with 20° cone, while density-based separation effect does exist in each size fraction, and the density-based separation effect is especially significant for <0.125 mm fraction, which is the origin of low ash coarse coal loss into the vortex finder and fine coal slime entrainment in the underflow. Density-based separation predominates in water-only cyclone with 130° cone while significant classification does occur for particles of higher density, which is the origin of high ash contaminate in the vortex finder. This size-based classification does not occur for low density particles, but becomes apparent for higher density.
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页码：954 / 960
页数：6
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