【摘要】 以淮北煤田6煤层煤为样品,采用中子活化法、化学方法、X射线衍射及扫描电镜等方法对煤及其灰样品中的矿物质、微量元素进行了分析,在此基础上,研究了样品中主要矿物的种类及其形成时的影响因素,分析了它们在燃烧前后的主要变化。通过分析可知,样品中主要含有高岭石、石英、方解石和黄铁矿以及多种微量元素;在燃烧过程中,微量元素的含量以及矿物的种类发生了变化,并形成高温稳定的矿物种类。更多还原

【Abstract】 Minerals are important composition in coal and coalashes In this study, the coal samples were collected from seam 6 in Huaibei coal field The minerals and trace elements in the coal and the coalash were investigated by INNA, chemical method, Xray diffraction and scanning electron microscopy On the basis of the methods, the main species and forming factor of minerals in coal and coal ashes are analyzed According to the result, the coal ashes are the residues derived from the inorganic and organic matter during coal combustion and the ash is an important and routinely determined characteristics of quality of coal Coal ashes are mainly consisted of kaolinite, quartz, calcite, pyrite and many trace elements in the studied samples The concentrations of trace elements and the species of the minerals were changed and the new steady species of minerals were formed during coal combustion更多还原