摘要
以铜川自燃煤矸石为研究对象,通过分拣、粉碎、过筛,利用X-射线荧光光谱仪、热分析仪、X射线衍射进行晶相检测并用JADE软件、电子探针及能谱仪等深度评价了铜川自燃煤矸石的组成、结构、性质。结果表明:铜川煤矸石经自燃后主要物相为α-石英、κ-Al2O3以及无定形SiO2和Al2O3,同时还夹杂着方解石和白云石;铜川煤矸石的自燃温度在600～680℃;铜川自燃煤矸石在自燃过程中结构破坏程度越大,形成的无定形体越多,结晶度越低,元素含量分布越分散,活性越高。
Based on the spontaneous combustion coal gangue,those properties were studied including chemical composition,structure,phases and character by X-ray fluorescence spectrometer（XRF）,thermogravimetry（TG） and differential scanning calorimetry（DSC）,X-ray diffraction（XRD） analyzing by JADE,electron probe microanalysis（EPMA） and energy dispersive spectrometer（EDS） after selecting,crushing,milling and sieving.The results indicate that the phase of coal gangue from Tongchuan after spontaneous combusting are α-quartz,κ-Al2O3,amorphous SiO2,and amorphous Al2O3,mixing some calcite and dolomite;The temperature of spontaneous combustion is in the range of 600-700 ℃.In the process of spontaneous combustion,the amorphous body is formed more,the crystallization rate is lower,the composition of elements is more dispersive,with the structure of spontaneous combustion coal gangue is destroyed worse,the activation properties are higher.
出处
《煤炭学报》
EI
CAS
CSCD
北大核心
2013年第A01期136-141,共6页
Journal of China Coal Society
基金
陕西省"13115"科技创新重大科技专项资助项目(2010ZDKG-58)
中央高校基本科研业务费专项资金资助项目(CHD2010JC076)
长安大学基础研究支持计划专项基金资助项目
关键词
自燃煤矸石
晶相
结构
分析
铜川
spontaneous combustion coal gangue
phase
structure
analysis
Tongchuan
