风化煤反浮选可行性试验  

Feasibility of Reverse Flotation of Weathered Coal

作　　者：张继龙[1,2] 郭明明 郭丽敏 Zhang Jilong;Guo Mingming;Guo Li-min(College of Mining Technology,Taiyuan University of Technology, Taiyuan, Shanxi,China;Taiyuan New Process Technology Co. Ltd.,Taiyuan, Shanxi, China;School of Environmental Science and Engineering, Shanghai Jiaotong University, Shanghai,China)

机构地区：[1]太原理工大学矿业工程学院矿产资源综合利用研究所,山西太原030024 [2]太原纽普瑞科技有限公司,山西太原030024 [3]上海交通大学环境科学与工程学院,上海200240

出　　处：《矿产综合利用》2019年第5期61-65,60,共6页Multipurpose Utilization of Mineral Resources

摘　　要：针对风化煤中矿物质含量大的特点,本文采用等离子体灰化、XRD、SEM、TEM等手段对新疆风化煤进行了表征分析。结果表明:新疆风化煤中含有高岭石、石英及烧石膏(半水石膏)三种矿物质,他们赋存在煤表面,相互连生,形成连生体,最终导致煤的疏水性变差,可浮性变弱。酸处理后煤样、高岭石、石英和烧石膏人工配样反浮选试验结果表明,人工配样精煤灰分(17.38%)明显小于风化煤精煤灰分(21.79%)。To study the influence of minerals on the flotation in the weathered coal, a series of characterization analysis is made about Xinjiang weathered coal by using plasma ashing instrument, XRD, SEM, TEM and C80 microcalorimeter. The result shows that the weathered coal contains kaolinite, quartz and andbassanite, which adheres to coal particle surface, connects mutually and forms intergrowth. These minerals also make hydrophobicity of the weathered coal decreased and floatability weak. The results of reverse flotation tests of artificial preparation of coal sample, kaolinite, quartz and burnt gypsum after acid treatment showed that the ash content of artifi cial preparation of coal sample (17.38%) was signifi cantly lower than that of weathered coal (21.79%).

关 键 词：风化煤 矿物质 疏水性 反浮选 

分 类 号：TD952[矿业工程—选矿]