Application of the intelligent 3-mass high-frequency fine screen in the process for recovery of coarse slime at coal preparation plant
LU Zhiming
HU Dexi
ZHANG Minggang
WANG Lei
Abstract：Recovery of coarse slime is a key process link for coal preparation plant to upgrade products and im-prove coal cleaning efficiency.In order to tackle the problems regarding run-off of water and passage of screen oversize through screenplate during coarse slime recovery process,and guarantee the separated coarse slime is up to the required indices in ash content,moisture content and recovery rate,a new process for making in-depth ash reduction,dewatering and recovery of coarse slime with the use of the intelligent 3-mass high-frequency fine screen is proposed,based on analysis of the characteristic of the said screen.Practice shows the desliming effi-ciency of the screen is as high as 85％,and its use can ensure that the screen overflow is well up to the desired indices as mentioned above;and the screen is far superior to the vibrating sieve bend and the stacked-up high-frequency vibrating fine screen in terms of dewatering desliming,of coarse slime recovery,reliability,stability,adaptability,large body size and intelligent level.Finally,it is pointed out that the future development of the coarse slime recovery process should be directed toward the goals of turning it into an intelligent,highly effi-cient and more energy-saving one.
Keywords：recovery of coarse slimeintelligent 3-mass high-frequency fine screenclean slime desliming and ash reductiondewatering of fine middling and refusesize control
Publication Date：2023-12-25
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：6( 89-94 )