鲁西南张湾井田3煤层煤质特征及成煤环境分析  

Coal quality characteristics and its coal-forming environment of No.3 coal seams in Zhangwan Minefield,Southwest Shandong Province

作　　者：罗文强 马祥县 唐璐璐 罗一凡 仵康林 张尚坤 杨斌 梁吉坡 LUO Wenqiang;MA Xiangxian;TANG Lulu;LUO Yifan;WU Kanglin;ZHANG Shangkun;YANG Bin;LIANG Jipo(Key Laboratory of Gold Mineralization Processes and Resources Utilization,Ministry of Land and Resources,Shandong Institute of Geological Sciences,Jinan 250013,China;Key Laboratory of Metallogenic Process and Resource Utilization of Metallic Minerals of Shandong Province,Shandong Instituteof Geological Sciences,Jinan 250013,China;College of Energy and Mining Engineering,Shandong University of Science and Technology,Qingdao 266590,China)

机构地区：[1]山东省地质科学研究院国土资源部金矿成矿过程与资源利用重点实验室,山东济南250013 [2]山东省金属矿产成矿地质过程与资源利用重点实验室,山东济南250013 [3]山东科技大学能源与矿业工程学院,山东青岛266590

出　　处：《煤炭科学技术》2022年第9期147-157,共11页Coal Science and Technology

基　　金：山东省2017重点研发计划资助项目(鲁科字[2017]88号)(2017CXGC1602)。

摘　　要：为了解张湾井田3煤层的基本特征和探讨其成煤环境,运用光学显微镜及显微光度计和煤质分析等技术方法,对采自张湾井田3煤层的114件煤样开展了煤的煤岩学分析、工业分析和元素分析。煤的煤岩组分结果表明,煤岩类型主要为半亮型煤,煤层以有机组分为主(总含量大于85.40%),且均以镜质组为主,次为惰质组,另有少量半镜质组和壳质组;无机组分为黏土类矿物,次为氧化物、少量硫化物和碳酸盐类矿物。煤的最大反射率在0.77%~1.21%。工业分析结果表明:张湾井田3_(上)煤层具有特低全水分(SLM)(0.45%~4.91%)、低灰分(LA)(5.35%~16.52%)、中等-中高挥发分(MV-MHV)(27.62%~36.96%)、低-中等固定碳(LFC-MFC)(44.96%~63.31%)、低硫(LS)(0.19%~0.92%)、低磷-中磷(P-2-P-3)(0.006%~0.076%)、中强-特强黏结(ZQNM-TQNM)(48~100)和高发热量(HQ)(22.25~32.49 MJ/kg)特征;3_(下)煤层具有特低全水分(SLM)(0.55%~2.32%)、低灰分(LA)(5.21%~12.76%)、中等-中高挥发分(MV—MHV)(27.45%~36.95%)、低-中等固定碳(LFC-MFC)(52.74%~63.68%)、低硫(LS)(0.25%~0.84%)、特低磷-低磷(P-1-P-2)(0.004%~0.024%)、强-特强黏结(QNM-TQNM)(76~98)和高发热量(HQ)(25.21~32.05 MJ/kg)特征。张湾井田3煤层煤类主要以1/3焦煤和焦煤为主,另有少量肥煤;煤的工业利用方向为炼焦用煤和动力用煤。张湾3煤层的镜惰比(V/I)值介于1.6~2.7,说明其成煤环境为以潮湿覆水环境起到主导作用;3_(上)煤层的灰成分指数0.12~0.54,3_(下)煤层的灰成分指数0.09~0.41,表明3煤层属受海水影响的沼泽环境;3煤层硫分均小于1%,表明其成煤环境为海水影响较弱的三角洲成煤环境,3煤层有机硫占全硫比为40.22%~66.20%,表明3煤层应为形成于陆相山前平原的低硫煤;3煤层所有样品V/(V+Ni)值处在0.215~1.0,V/Cr值为1.06~3.2,Ni/Co值0.57~2.77,均显示还原性较强的沉积环境。张湾井田3煤层沉积环境为淡水还原环境,间或受到海水的影响,为三角洲To understand the basic characteristics of coals from the No.3 coal seams in the Zhangwan minefield and discuss its coal-form⁃ing environment,coal petrology analysis,industrial analysis and element analysis were carried out on 114 coal samples by means of optical microscopy,microscopic photometer and coal quality analysis.The results of coal petrographic composition show that the coal rock type is mainly semi-bright briquette,and the coal seams are dominated by organic components(total content is more than 85.40%).The vitrinite is the main component,followed by inertinite,and a small amount of semi-vitrinite and crust.The inorganic components are clay miner⁃als,followed by oxides,a small amount of sulfides and carbonate minerals.The maximum reflectivity of coal ranges from 0.77%to 1.21%.Industrial analysis results show that the upper coal seam of the No.3 coal seams in the Zhangwan minefield has extra-low total moisture contents(SLM)(0.45%-4.91%),low ash contents(LA)(5.35%-16.52%),medium to medium-high volatile contents(MV-MHV)(27.62%-36.96%),low to medium fixed carbon contents(LFC-MFC)(44.96%-63.31%),low sulfur contents(LS)(0.19%-0.92%),low to medium phosphorus contents(P-2 to P-3)(0.0066%-0.0076%),moderate to strong bonding(ZQNM-TQNM)(48-100)and characteristics of high calorific value(HQ)(22.25-32.49 MJ/kg).The lower coal seam of the No.3 coal seam in the Zhangwan minefield has extremely low total moisture contents(SLM)(0.55%-2.32%),low ash contents(LA)(5.21%-12.76%),medium-medium-high volatile contents(MV-MHV)(27.45%-36.95%),medium-medium fixed carbon contents(LFC-MFC)(52.74%-63.68%),low sulfur contents(LS)(0.25%-0.84%),extra-low to low phosphorus(P-1 to P-2)(0.004%-0.024%),strong to super-strong bonding(QNM-TQNM)(76-98)and high calorific value(HQ)(25.21-32.05 MJ/kg)Characteristics.Coal of the No.3 coal seams in the Zhangwan minefield mainly consist of 1/3 coking coal and coking coal,and a small amount of fat coal.The in⁃dustrial utilization direction of coal are coking coal and power coal.The mirror ine

关 键 词：张湾井田 焦煤 煤岩学 煤化学 成煤环境 

分 类 号：TQ533[化学工程—煤化学工程]