新店东勘查区号煤层煤质特征分析与评价 .

新店东勘查区内主要含煤地层为龙潭组,9号煤层位于龙潭组中部,结构简单,含夹矸0~3层,一般0~1层,岩性为炭质泥岩或泥岩。9号煤层局部厚度变化较大,总体属较稳定煤层。分析了9号煤层的物理性质与煤岩特性,区内煤颜色为黑色,煤层以粉粒状为主,少量块状、碎块状;结构主要为条带,金属光泽为主,断口主要为参差状;宏观煤岩类型主要以亮煤为主,可采煤层微观煤岩类型均为微镜惰煤。9号煤层的工业分析和元素分析表明:原煤属中灰、特低挥发分、中高固定碳、中高硫、低磷、低氟、特低氯煤;其稀散元素达不到最低工业品位,无开采价值。通过分析原煤工艺性质,说明9号煤为无烟煤三号,属高发热量、中等结渣、易磨煤,其可选性为中等可选~极难选煤。依据区内煤层煤质特征,各煤层用途广泛,可作为民用燃料、发电、建材用煤、锅炉用煤等。 Longtan formation is the main coal seam in North East exploration area,No. 9 coal seam locate in the middle of Longtan formation,its structure is simple,and contains about zero to three dirt bands,zero to one dirt band is in the majority. The lithology is carbon mudstone or mudstone. In general,the coal seam is stable,with obvious varied thickness in some areas. Analyse the physical characteristics and coal lithotypes. The granular powder is the main component,followed by bulk. The coal seam has metallic luster,the strip is the main structure. The macrolithotype of coal is clarain,the microlithotype of coal is vitrinertite. The proximate analysis and elemental analysis of No. 9 coal seam show that,the raw coal is low-ash,ultralow volatile and chlorine,medium to high fixed carbon,medium to high sulfur,low phosphorus and fluorine. The tare dispersion elements cant reach the lowest industrial grade,so the coal seam is unprofitable. The characteristics of raw coal show that,the No. 9 coal seam is No. 3 anthracite,high calorific value,medium slag bonding,extremely grinding. The washability is medium to ultradifficult. Based on the properties of each coal seam,it can be used in the field of power generation,building,heat supplement