哈拉沟选煤厂平均原煤小时量3000t/h.基本流程为13mm以上块煤经三套浅槽分选,13mm以下末煤进入到末煤系统利用重介质旋流器分选或直接上仓.考虑到块煤系统吨煤成本比末煤低8.12元/t.将块煤入洗下限由13mm调整至6mm,块煤入洗量增加302.62t/h,精煤产率85.51%,提高2.17%;精煤灰分4.61%,降低0.23%;数量效率94.62%,提高4.28%,每年可节省成本约四百万元.%The average raw coal throughput of Halagou Coal Preparation Plant is 3000t/h. The basic technology process is+13mm raw coal is separated by three sets of shallow slot, besides-13mm raw coal is separated by heavy medium cyclone or carried directly into the product storehouse. The cost of lump coal system is 8.12 yuan/ton less than the slack coal. After the feeding limit adjusted from +13mm to +6mm, lump feeding increases 302.62t/h. The clean coal yield is 85.51%, increases 2.17 percentage points. The clean coal ash of theory is 4.61%, decreases 0.23 percentage points. The quantity efficiency is 94.62%, increases 4.28 percentage points, which can save more than 4 million Yuan per year.
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