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利用2DYAH1836型双层振动筛作为原煤筛分设备，生产出三种粒度的原煤产品，对其中灰分高的中块原煤进行粗选加工，有效地提高了原煤质量。
Using 2DYAH1836 dual-layer shale shaker as raw coal screening equipment to produce three kinds of raw coal products of particle size, of which the high ash content of the raw coal roughing processing, effectively improve the quality of raw coal.