西藏昌都早石炭世10#煤的煤质、煤岩和地球化学特征Coal Quality,Petrology and Geochemical Features of Early Carboniferous Coal No.10 in Qamdo,Tibet
徐晓琴
摘要(Abstract)：
运用光学显微镜及显微光度计、X射线荧光光谱、冷原子吸收光谱、电感耦合等离子体质谱和煤质分析等技术方法,对西藏自治区昌都市马查拉煤矿早石炭世10#煤层进行了研究。结果显示,昌都早石炭世10#煤挥发份低(V_(daf)=8.64%),碳含量高(C_(daf)=90.2%),镜质组反射率高(R_(ran)=2.17%),灰分低(A_d=4.79%),硫分低(S_(t,d)=0.74%),发热量高(Q_(gr,d)=33.26 MJ/kg),镜质组含量高(镜质组总和为69.2%),镜质组分具有强烈的各向异性,常量元素氧化物含量中SiO_2和Al_2O_3占绝对优势(90.85%),微量元素除Pb富集、Be轻微富集外都接近或低于世界煤的平均值,潜在有害元素(As、Hg、F、Be、U等)含量低,是优质贫煤或无烟煤。
关键词(KeyWords)： 早石炭世煤;煤岩学;微量元素地球化学;昌都
基金项目(Foundation):
作者(Author): 徐晓琴
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