硅酸盐通报2018，Vol.37Issue(3)：990-995,6.
硅铝比对钙镁耦合作用降低煤灰熔融性的影响研究
Influence of Si/Al Ratio on Coupling Intensity of Calcium and Magnesium in Reducing Coal Ash-Fusibility
摘要
Abstract
Factitious ash of different Si/Al ratio were prepared by using chemical reagents, and law of their flow temperature were studied with the change of compound proportion of CaO and MgO.Mineral transformation process was analyzed, and mechanism of coupling interaction of calcium and magnesium were explored by using XRD and SEM-EDX.The results show that with increasing of Si/Al ratio, the strength of coupling intensity of calcium and magnesium on reducing coal ash-fusibility increased at first and then decreased.It reaches maximum when Si/Al ratio is 1.5.Interacting between anorthite and forsterite at low temperature is main reason why coupling intensity of calcium and magnesium can reduce coal ash-fusibility.When Si/Al ratio is 1.0 or 4.0,with the proportion of MgO increasing in compound flux,the ash fusion temperatures come down because of the establishment of anorthite's reaction system and diopside's reaction system at low temperature.It does not show coupling effect of calcium and magnesium.With the increase of Si/Al ratio, schistose ash slag transformed macroaggregate or flocculatidn in ash slag of same Si/Al ratio.SEM-EDX analysis results are consistent with XRD analysis results.关键词
硅铝比/钙镁耦合/模拟灰/XRD/SEM-EDXKey words
Si/Al ratio/coupling intensity of calcium and magnesium/factitious ash/XRD/SEM-EDX分类
化学化工引用本文复制引用
李寒旭,段锦,陶然,纪明俊,华桂义..硅铝比对钙镁耦合作用降低煤灰熔融性的影响研究[J].硅酸盐通报,2018,37(3):990-995,6.基金项目
国家自然科学基金(21376006) （21376006）
安徽省科技重大专项(15czz02045) （15czz02045）
