煤中矿物质及其燃烧后的变化分析  

MINERALS IN COAL AND THEIR CHANGES DURING COMBUSTION

作　　者：刘桂建[1] 王俊新[1] 杨萍玥[2] 彭子成[1] 

机构地区：[1]中国科学技术大学地球与空间科学学院,安徽合肥230026 [2]中国科学技术大学火灾科学国家重点实验室,安徽合肥230026

出　　处：《燃料化学学报》2003年第3期215-219,共5页Journal of Fuel Chemistry and Technology

基　　金：国家自然科学重点基金(40133010);国家自然科学基金(4027303)5);安徽省科学基金(01045101);中国科技大学火灾科学国家重点实验室开放基金(HZ2001 KF02)

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。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

关 键 词：煤 燃烧 矿物质 微量元素 

分 类 号：TQ533[化学工程—煤化学工程]