从煤的变质程度看夹矸转化

通过研究无烟煤层中泥岩夹矸的岩石矿物学特征,探讨了其主要成分高岭石发生转化的主要方向及影响因素。通过样品的显微镜下鉴定、差热分析、X射线粉晶衍射分析、红外吸收光谱分析等一系列测试结果的分析研究,发现无烟煤层泥岩夹矸中高岭石因受不同因素的影响而发生不同的转化,即:高岭石向伊利石转化,伊利石-蒙脱石(I/M)混层矿物及蒙脱石出现。其主要原因是区域变质作用及周围介质影响所致。

Discussion on Parting Transform From Rank of Coal Metamorphism

Through research on lithologic mineral feature of mudstone parting in anthracite,probe into the transform direction of kaolinite as main component of coal and influence factors.This research has used a series of testing means,such as observation in field,collection of specimens,appraisal under microscope,differential thermal analysis,X-diffraction analysis,infra -red absorption spectroscopy analysis and so forth,and found that kaolinite in mudstone parting of anthracite transformed to different directions by influences of different factors,and mainly transformed to illite,and discovered aggregate of illite -montmorillonite(I /M)and montmorillonite in it.The paper hold that heighten of coal metamorphism and transformation of parting mineral may be mainly caused by regional metamorphism and influence of medium condition all around.