Study on Fusibility and Flow Behavior of High-Calcium Coal Ash

JOURNAL OF CHEMICAL ENGINEERING OF JAPAN

Qinghua Guo¹  Fuchen Wang¹  Guangsuo Yu¹  Jie Xu¹  Feng Zhao¹  Xia Liu¹ 

[1] Key Laboratory of Coal Gasification and Energy Chemical Engineering of Ministry of Education, Shanghai Engineering Research Center of Coal Gasification, East China University of Science and Technology

关键词: High-Calcium Coal Ash;    Fusibility;    Viscosity;    SiO2;    FactSage;   

DOI  :  10.1252/jcej.13we352

来源: Maruzen Company Ltd

【 摘 要 】

References(23)Cited-By(2)The primary aim of this study is to understand the effect of SiO2 on the fusibility and flow behavior of high-calcium coal ash and to investigate the mineral materials transformation at high temperatures. The changes of ash fusion temperature and viscosity at different coal–SiO2 blended ratio were researched. The results show that the ash fusion temperature of Shanxin blending coal reaches the minimum when SiO2/Al2O3 (S/A) weight ratio is 7.36 and acid to basic ratio (A/B) is 1.23. The mineral matters variation of Shanxin coal ash was compared with that of S/A=7.36 Shanxin blending coal ash by scanning electron microscopy (SEM) and X-ray diffraction (XRD). The results indicate that the fluidity of slag has been improved by the Si content in minerals. FactSage was used to predict the optimum value of flux and to demonstrate the mineral matters variation and these results agree well with the experimental values.

【 授权许可】

Unknown