喷吹原煤结晶水和煤粉水分析出过程  

Crystal Water in Raw Coal and Water Precipitation Process in Pulverized Coal

作　　者：陈洪飞[1] 吴铿[1] 徐万仁[2] 周翔[1] 韦少华[1] 倪碧帅[1] 

机构地区：[1]北京科技大学冶金与生态工程学院,北京100083 [2]宝钢研究院,上海201900

出　　处：《有色金属》2011年第2期189-193,共5页Nonferrous Metals

基　　金：国家高技术研究发展(863)计划资助项目(2006AA06Z121;2009AA06Z105);国家自然科学基金资助项目(50874129)

摘　　要：用差示扫描量热法对喷吹原煤进行分析并测定其中硫酸盐的硫含量,发现在400℃以下有以硫酸亚铁形式存在的结晶水。采用热重分析方法研究喷吹煤粉,给出在400℃以下不同粒度混合煤粉中水分析出规律。根据煤粉中水分主要是在20～100℃和300～400℃析出,确定煤中的结晶水是以硫酸亚铁的形式存在。The sulfur content as sulfate in the raw coal of injection is measured by means of DSC,it is found there is crystal water existing in the form of ferrous sulfate under 400℃.The pulverized coal is investigated with the method of thermo-gravimetric analysis.The laws of water precipitation of various sizes mixed coal under 400℃ are described.Based on the fact that the water in the coal precipitates between the 20℃to 100℃ and 300℃ to 400℃,the crystal water in the coal exists in the form of ferrous sulfate is confirmed.

关 键 词：冶金技术 喷吹原煤 喷吹煤粉 结晶水含量 水分析出 

分 类 号：TQ533.2[化学工程—煤化学工程] TF538.63[冶金工程—钢铁冶金]