贵州六盘水煤矸石的矿物特性  

Mineral Characteristics of Coal Gangue from Liupanshui in Guizhou Province

作　　者：金会心[1] 吴复忠[1] 朱明燕[1] 刘倩[1] 

机构地区：[1]贵州大学材料与冶金学院,贵州贵阳550025

出　　处：《过程工程学报》2014年第1期151-156,共6页The Chinese Journal of Process Engineering

基　　金：贵州省科学技术厅国际合作项目(编号:黔科合外G字[2011]7004号)

摘　　要：对贵州六盘水地区煤矸石的矿物特性进行了研究．结果表明，以煤巷矸和岩巷矸混合矸为主的煤矸石固定碳含量和热值均较低，不适宜直接用于动力燃料发电，而富铝、高铁、高钙是其重要特征，SiO2，A120，和Fe2O3含量之和达70％-80％，所含V，Co，Ni，Cr,Ge的富集度高，均具有回收利用价值．矿物组成以石英和高岭石为主，其次为菱铁矿、黄铁矿、蒙脱石、斜长石、伊利石、白云石、方解石、锐钛矿等；粉末状煤矸石由大小不一的不规则颗粒组成，粒径多为1～3μm，部分粒径为0．2-1μm；石英、菱铁矿、黄铁矿等晶体矿物多呈致密块状，结晶完整；高岭石、蒙脱石、伊利石等多呈片状、疏松团块状，结晶较石英差；而含碳有机质多呈片状，呈无定型．The mineral characteristics of coal gangue from Liupanshui area in Guizhou Province were studied. The results showed that the mixed gangue samples of waste coal roadway gangue and rock gangue had low C content and low calorific value, which could not be used directly as power generation fuel. However, Al enrichment and high contents of Fe and Ca were one of the important characteristics of coal gangue. The chemical components in the coal gangue mainly included SiO2, A1203 and Fe203, and their total content was up to 70%-80%. Moreover, V, Co, Ni, Cr and Ge had high enrichment degree in the coal gangue, which should be recovered as important value metals. In addition, its mineral composition mainly consisted of quartz and kaolinite, and then siderite, pyrite, montmorillonite, plagioclase, illite, dolomite, calcite and anatase, etc. The coal gangue powder was made up of the particles with irregular shapes and different sizes in the main range 1-3μm, and partially 0.2-1 μm. The crystalline minerals, such as quartz, siderite and pyrite, were mostly in dense block and had perfect crystalline structure, while kaolinite, montmorillonite and plagioclase, etc., were in flake or loose block, which had lower crystalline degree than quartz, the organic matter containing C was mainly in flake and amorphous structure.

关 键 词：煤矸石 矿物特性 组成 六盘水地区 

分 类 号：TD984[矿业工程—选矿]