色连二矿选煤厂商品煤配煤优化可行性探究

Feasibility study on optimizing coal blending in Selian No.2 Coal Mine Coal Preparation Plant

由于近期色连二矿原煤煤质较好,选煤厂在掺配生产4800kcal/kg和4200kcal/kg两种商品煤时,商品煤发热量无法精准控制,造成极大的浪费资源,影响矿井效益。为了实现矿井效益最大化,在现有工艺条件下,通过对3301带式输送机下料溜槽进行改造,6~13mm原煤直接进入702和703带式输送机,掺配比例通过液压闸板调整,以探究进一步优化色连二矿选商品煤煤配煤方案。改造后,不仅提高了4800kcal/kg商品煤产率,还能稳定4200kcal/kg商品煤发热量,全年可增收453.38万元。

As the raw coal quality of Selian No.2 Coal Mine varies shapely,the calorific capacity of the commercial coals can’t be precisely controlled when the raw coal is blended to produce the 4800 kcal/kg and 4200 kcal/kg commercial coal products,causing great waste of resources and relatively low benefit,in order to maximize the mine benefit,reforming the feeding chute of 3301 belt conveyors is reformed and the 6~13 mm raw coal can be directly transported into 702 and 703 belt conveyors and the blending proportion can be adjusted by hydraulic gate,and thus the scheme of blending commercial coals is further optimized.The yield of the 4800 kcal/kg commercial coal is increased,and the calorific value of the 4200 kcal/kg commercial coal is stabilized,which can increase 4.5338 million yuan of annual income.