摘要
煤泥水处理是选煤厂生产的重要环节,不仅直接影响选煤厂洗水闭路循环的实现,也是分选生产成本最高的环节之一,通过分析大柳塔选煤厂煤质特质,结合其实际分选成本构成,对大柳塔选煤厂末煤系统进行工艺优化,并从生产效益和分选成本两方面进行对比分析。对大柳塔选煤厂末煤部分实行干法脱粉工艺,可避免粉煤进入分选系统浸水,泥化产生更多的细煤泥,使系统中总煤泥量减少,从而减少煤泥水系统的压力,降低煤泥产品脱水难度,降低工艺系统运营成本。以2018年全年平均价格作为测算基价,<6 mm干法脱粉工艺比末煤全入选工艺效益明显,经济合理,分选成本明显降低,达到了工艺优化的预期效果。
Slime water treatment is an important link in coal preparation plant production,which not only directly affects the realization of closed-circuit washing water cycle in coal preparation plant,but also is one of the most expensive links in coal washing production. By analyzing the coal quality characteristics of daliuta coal preparation plant and combining with its actual washing cost composition,this paper optimizes the process of dust coal system in daliuta coal preparation plant,and compares and analyzes production benefits and washing cost. Process optimization the dry dedusting process for the end coal of daliuta coal preparation plant can prevent the coal powder from flooding into the sorting system,and the sludge will produce more fine coal slime,thus reducing the total amount of slime in the system,thus reducing the pressure of slime water system,reducing the difficulty of dewatering slime products and reducing the operation cost of the process system. Taking the average annual price of 2018 as the base price,the dry dedusting process of < 6 mm is more efficient and economical than the fully selected process of coal,and the separation cost is significantly reduced,thus achieving the expected effect of process optimization.
作者
田毅
TIAN Yi(Operations Department,Shendong Coal Preparation Center,Yulin 719315,China)
出处
《洁净煤技术》
CAS
2019年第S01期1-4,共4页
Clean Coal Technology
关键词
煤泥水
干法脱粉
煤质特征
分选成本
工艺优化
slime water
dry desliming
coal quality characteristics
washing cost
process optimization
