The properties and sedimentation characteristics of extremely sliming coal slime water
LIN Zhe
YANG Chao
SHEN Zheng-yi
QI Xin
Abstract：The properties of coal slime water from one coal preparation plant were analyzed through X-ray diffraction and screening experiment, and the characteristics of natural sedimentation and flocculation were also tested to investi-gate the relation between slime water properties,flocculation and sedimentation characteristic. The results show that a large number of clay minerals which can break down into fine particles when encountering water are in the sample, and they make slurry water into complex polydisperse suspension system which named extremely sliming coal slime water. Affected by clay minerals ,the sediment velocity and the density of compacted layer reduce as the concentration of coal slurry increase. The surface property of floeculation is selective to suspend particles, so that the modified polyacrylam-ide has no effective to clay minerals but it congregate the coal particles and precipitate them to a compact thickness, and both of clay minerals and coal can be flocculated by PAM -ASG903 to a compacted thickness with lower density at the same time.
Keywords：extremely sliming coal slime watersedimentation characteristicsflocculation
Publication Date：2010-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 312-315 )