温度对煤矸石中提取有效硅的影响研究  

STUDY ON MELTING AVAILABLE SILICONE FROM COAL GANGUE INFLUENCED BY TEMPERATURE

作　　者：侯晨涛[1] 王生全[1] 谢宵斐[1] 曾社教[1] 

机构地区：[1]西安科技大学地质与环境工程系,西安讲师710054

出　　处：《煤炭转化》2008年第2期65-67,73,共4页Coal Conversion

基　　金：陕西省教育厅资助项目(06JK238)

摘　　要：以陕西省韩城矿区ll#煤层夹矸型高岭岩为研究对象，于500℃～1300℃范围内的7个温度段进行了煅烧实验，考察了煅烧温度对提取有效硅的影响，并采用X射线衍射（XRD）和差热（DTA）等分析方法深入地了解了煤矸石热活化过程的变化。结果表明，煤矸石热活化的最佳温度为700 C，此时煤矸石中99％为非晶相，形成了一个较为理想的活化区域。This paper carried out a systematic pilot study on the process of the thermal activation of available silicon from coal gangue, and the influence of temperature was examined. The best calcination temperature was determined from a range of 500 C-1 300 C. Analyzing methods such as X-ray diffraction （XRD） and differential thermal analysis （DTA） were adopted to give a deep insight into the activation of silicon in coal gangue. The results show that the best activation temperature is 700 C ,at which 99 % of the coal gangue is transformed into semi-crystal meta-kaolinite.

关 键 词：煤矸石 煅烧 温度 有效硅 

分 类 号：TD849.5[矿业工程—煤矿开采]