文献类型：期刊文献

中文题名：镁基助熔剂对刘桥二矿混煤灰熔融特性的影响

英文题名：EFFECT OF MAGNESIUM-BASED FLUX ON THE MELTING CHARACTERISTICS OF COAL ASH FROM COAL BLENDS USING THE LIUQIAO No.2 COAL MINE

作者：李继炳#博士生、教授级高级工程师[1,2];沈本贤[1];赵基钢[1];王基铭[1,3]

机构：[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]中国石油化工集团公司,北京100029

年份：2009

卷号：32

期号：2

起止页码：37

中文期刊名：煤炭转化

外文期刊名：Coal Conversion

收录：CSTPCD;;北大核心:【北大核心2008】；CSCD:【CSCD2011_2012】；

语种：中文

中文关键词：煤;灰熔融特性;镁基助熔剂

外文关键词：coal,melting characteristic,magnesium based flux

摘要：研究了镁基助熔剂对皖北刘桥二矿混煤(AQ007)灰熔融特性的影响,并在添加镁基助熔剂前后分别对AQ007煤灰在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AQ007煤灰熔点高的主要原因是1 000℃以上形成的莫来石引起的;加入镁基助熔剂可以降低AQ007煤灰的熔融温度;在高温下镁基助熔剂与煤灰中其他铝硅酸盐矿物发生反应,生成钙镁橄榄石、镁铝石、镁橄榄石和堇青石等低温共熔化合物,从而使煤灰熔点明显下降.
The effect of calcium-based flux on the melting characteristics of coal ash from coal blends using the Liuqiao No. 2 Coal Mine in Wanbei （AQ007） was investigated. The change of the compositions of mineral under various temperatures before and after adding magnesium- based flux into AQ007 was employed by XRD and FT-IR. Results shows that mullite formed under over 1 000 ℃ has an effect on increasing the melting point of coal-ash, and this is the major reason which leads to high melting point of AQ007 coal-ash. The coal ash fusion point will be decreased by adding magnesium-based flux. The low temperature eutectic mixtures such as monticellite, ringwoodite and pyrope are easily formed between magnesium and compounds under high temperature, which will remarkably decrease coal ash fusion point.