哈拉沟选煤厂重介浅槽分选机入料下限调整的应用研究
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摘要
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 3000 t/h. The basic technology process is+13 mm raw coal is separated by three sets of shallow slot,besides-13 mm 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 +13 mm to + 6 mm, lump feeding increases 302. 62 t/h. The clean coal yield is85. 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.
The average raw coal throughput of Halagou Coal Preparation Plant is 3000 t/h. The basic technology process is+13 mm raw coal is separated by three sets of shallow slot,besides-13 mm 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 +13 mm to + 6 mm, lump feeding increases 302. 62 t/h. The clean coal yield is85. 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.
引文
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[4]匡亚莉.选煤工艺设计与管理[M].徐州:中国矿业大学出版社,2009.
[5]GB/T 15715—2014,煤用重选设备工艺性能评定方法[S].
[6]黄亚飞.降低浅槽重介分选机入料粒度下限的探讨[J].选煤技术,2017(2):56-58.
[7]李晓军.济三选煤厂浅槽选矸作业入料粒度下限的探讨[J].煤炭加工与综合利用,2014 7(3):40-43.
[8]张毅勤.炼焦煤选煤厂机械选矸作业入料粒度下限的探讨[J].选煤技术,2014 4(25):65-67.
[2]张超,蒋玲,赵志根.大直径两产品重介旋流器在朔里选煤厂的应用[J].矿山机械,2007(1):34-39.
[3]侯晓博,徐初阳,郜超.重介质浅槽分选机在动力煤选煤厂的应用[J].洁净煤技术,2010(5):59-63.
[4]匡亚莉.选煤工艺设计与管理[M].徐州:中国矿业大学出版社,2009.
[5]GB/T 15715—2014,煤用重选设备工艺性能评定方法[S].
[6]黄亚飞.降低浅槽重介分选机入料粒度下限的探讨[J].选煤技术,2017(2):56-58.
[7]李晓军.济三选煤厂浅槽选矸作业入料粒度下限的探讨[J].煤炭加工与综合利用,2014 7(3):40-43.
[8]张毅勤.炼焦煤选煤厂机械选矸作业入料粒度下限的探讨[J].选煤技术,2014 4(25):65-67.