铁基助熔剂对皖北刘桥二矿煤的灰熔融特性影响研究  

Effect of ferrum-based flux on the melting characteristics of coal ash from coal blends using the Liu-qiao No.2 coal mine in Wan-bei

作　　者：李继炳[1,2] 沈本贤[1] 李寒旭[3] 赵基钢[1] 王基铭[1] 

机构地区：[1]华东理工大学化学工程联合国家重点实验室,上海200237 [2]中国石油化工股份有限公司安庆分公司,安徽安庆246001 [3]安徽理工大学化学工程学院,安徽淮南232001

出　　处：《燃料化学学报》2009年第3期262-265,共4页Journal of Fuel Chemistry and Technology

摘　　要：研究了铁基助熔剂对皖北刘桥二矿煤(AQ)灰熔融特征的影响,并对AQ煤灰在添加铁基助熔剂前后不同热处理温度下的矿物组成进行了XRD和红外光谱分析。结果表明,导致AQ煤灰熔点高的主要原因是1000℃以上形成的莫来石引起的;加入铁基助熔剂可以降低AQ煤灰的熔融温度;在高温下铁基助熔剂与煤灰中其他铝硅酸盐矿物发生反应,生成铁橄榄石和铁尖晶石等低温共熔化合物,从而使煤灰熔点明显下降。The effect of ferrum-based flux on the melting characteristics of coal ash in coal blends from the Liu-qiao No. 2 coal mine in Wan-bei （AQ） was investigated. The change of the compositions of mineral under various temperatures before and after adding ferrum-based flux into AQ was studied by XRD and FT-IR. Results show that the presence of mullite formed over 1000℃ increases the melting point of coal-ash, leading to high melting temperature of AQ coal-ash. The coal ash fusion temperature will be decreased by adding ferrum-based flux. The eutectic mixtures such as fayalite and hercynite are easily formed between ferrum compounds under high temperature, which remarkably decreases the coal ash fusion temperature.

关 键 词：煤 灰熔融特性 铁基助熔剂 

分 类 号：TQ038[化学工程]