摘要
以石嘴山煤田汝箕沟矿区侏罗纪的二煤、三煤和石炭井矿区二叠纪的四煤、五煤为研究对象,采用低温灰的化学组成分析和X射线衍射分析,对煤中矿物特征做对比研究。结果表明:汝箕沟矿区样品与石炭井矿区样品在化学成分、灰成分指数、Si和Al比值上,都具有明显差异;汝箕沟矿区样品X衍射图谱的波峰最大值远远小于石炭井矿区的样品值,两者的图谱形态也存在很大差异;汝箕沟矿区样品中以高岭石、伊利石、石英为主,其它很少,高岭石约占65%;石炭井矿区样品中以高岭石占绝对优势,约占85%,其他矿物含量较少。化学组成分析的结果和X射线衍射分析的结果具有较好的对应性。
The mineral matter characteristics were comparatively studied through analyses of chemical composition and X-ray diffraction of LTA in this paper; the samples are from Jurassic No.2 and No.3 coal seams in Rujigou mining area and Permian No.4 and No.5 coal seams in Shitanjing mining area. The analysis of chemical composition reveals that： the ash components from Rujigou are obviously different from Shitanjing in chemical constituents, ash component indices and Si/AI ratios. The analysis of X-ray diffraction shows that： the X-ray diffraction curves of LTA samples also have significant differences between Jurassic coal and Permian coal in maximum values and in curve patterns. For Jurassic coal, the mineral matters mainly include kaolinite, illite and quartz, and kaolinite proportion is about 65%. For Permian coal, the main mineral matter is kaolinite, about 85%, and the others are few. And, the results of chemical analysis and X-ray diffraction are correspondent each other.
出处
《中国煤炭地质》
2010年第2期7-9,13,共4页
Coal Geology of China
基金
国家自然科学基金项目(编号:40772095)
关键词
石嘴山
双纪煤田
矿物特征
对比研究
Shizuishan
double periodic coalfield
mineral characteristics, comparative study
