Application of the IDS intelligent dry separator at Huolinhe South Opencast Mine

As lignite is not amenable to wet cleaning, the IDS separator is used by the opencast mine to treat the 300~80 mm raw coal. Practice shows the use of the separator can lead to effective removal of gangue with a removal rate as high as 95.5%, reduction of load and operating cost of subsequent crushing process, reduction of percentage of coal misplaced in refuse to 1.72% and percentage of refuse in coal to 2.77%, effective elemination of gangue in coarse coal, lessening of environmental protection pressure, improvement of economic performance, and realization of comprehensive utilization of coal resources.