Research on Coal Quality Characteristics of Mineable Coalbeds in Hongshaquan No.1 Open Pit Coal Mine of Zhundong
By means of geological route survey,profile survey,drilling and sample analysis and testing,this paper con-ducted a systematic survey of the minable coal seams in Hongshaquan No.1 Open pit Coal Mine in the east of the Jung-gar Basin,studied and analyzed the characteristics of coal rock and coal quality and harmful elements in coal,and esti-mated the resources of each minable coal seam.The research results indicate that the main coal seams that can be mined in the Xishanyao Formation of the Hongshaquan No.l open-pit coal mine area in Zhundong are ultra-low ash,ultra-low sulfur,low phosphorus,medium high volatile matter,non sticky coal,and long flame coal;It has the characteristics of medium to high calorific value,oil content,making it a good industrial power generation and civilian coal.The overall content of harmful elements in each extractable coal seam is relatively low and has good selectivity;Coal contains 0.05～0.15％chlorine(Cl d),which belongs to low chlorine coal(L Cl);The arsenic(As)content in coal is less than 4× 10-4,which is classified as first-class arsenic containing coal(Ⅰ As).The gasification indicators of coal were analyzed based on its crushing strength,thermal stability,and slagging properties.It belongs to high-strength coal,medium to high thermal stability coal,and difficult slagging coal,indicating that coal is conducive to gasification.The average thickness of Xish-anyao Formation is 226.47 meters,with a coal content coefficient of 29.87％.The average pure coal thickness of the 11 minable coal seams is 67.65 meters.Resource estimates were made for each minable coal seam,and the estimated coal resource of Xishanyao Formation in the area is 4 798.10 million tons,laying a good foundation for exploration and devel-opment.
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