Reconstruction practice of coarse slime system in Coal Preparation Plant of Lvshuidong Coal Mine
Due to the lack of recovery link of coarse slime,part of coarse slime of 1～0.25mm is recovered directly as medium coal,resulting in loss of coarse and fine slime products and affecting the comprehensive economic benefit of coal preparation plant.Based on the field practice and process analysis,the optimization scheme of the coarse slime recovery system,which includes the classifier cyclone+FBS fluidized bed separator+stacked high frequency fine screen+slime centrifuge,has been developed and implemented.The transformation practice shows that the system runs stably,the ash content of coarse and refined coal slime is controlled within the range of 10％～10.5％,and the output of coarse and refined coal slime is 58,800 t/a,which effectively reduces the loss of cleaned coal and plays a positive role in improving the quality and efficiency of coal preparation plant.
coal preparation plantcoarse slime sortingfluidized bed separatorstacked high frequency fine screenremove mud and reduce ashtechnological transformation
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