Effect of Soda Ash on Properties of Mold Flux and Mineralogical Structures of Flux Film

作     者：Xiu-li HAN Yi-fei ZHANG Lei LIU Li-na LIU Han ZHANG 

作者机构：College of Mining EngineeringNorth China University of Science and Technology 

出 版 物：《Journal of Iron and Steel Research International》 (国际钢铁研究杂志)

年 卷 期：2016年第23卷第3期

页      面：197-202页

核心收录：

学科分类：080602[工学-钢铁冶金] 08[工学] 0806[工学-冶金工程] 

基　　金：Item Sponsored by National Natural Science Foundation of China(51174073) National Natural Science Foundation-National Iron and Steel Joint Research of China(U1360106) 

主　　题：soda ash mold flux flux film crystallization property mineralogical structure 

摘      要：During continuous casting,properties of mold flux and mineralogical structures of flux film play important roles in controlling steel *** effect of soda ash on the physical properties and crystallization characteristics of mold flux was investigated using process mineralogy,including polarizing microscopy,X-ray diffraction,and electron microprobe,*** flux was mainly prepared using cement clinker and industrial mineral materials under laboratory conditions,and the mineralogical structures of the flux film were systematically identified and quantitatively *** results showed that,by increasing the soda ash content from 10mass% to 18mass%,the crystallization temperature,critical cooling rate and crystallization ratio of the flux film decreased,but the crystallization ratio still reached 75% after adding soda ash,and the mineral compositions and microstructures of the flux film changed *** the soda ash content exceeded 14mass%,the critical cooling rate and the crystallization ratio decreased slightly,whereas the mineral content of the flux film changed evidently,with a large amount of cuspidine precipitation and a significant decrease in the wollastonite content until it reached zero,which resulted in deterioration of the lubrication of the flux film.