Structure, viscosity, and crystallization of glass melt from molten blast furnace slag

被引：14
|
作者：
Zhang, Wentao [1 ]
He, Feng [1 ,2 ]
Xiao, Yongli [3 ]
Xie, Mengqin [3 ]
Li, Fengxiang [1 ]
Xie, Junlin [1 ,2 ]
Yang, Hu [2 ]
Li, Zuhao [1 ]
机构：
[1] Wuhan Univ Technol, State Key Lab Silicate Mat Architectures, Wuhan, Peoples R China
[2] Wuhan Univ Technol, Sch Mat Sci & Engn, Wuhan, Peoples R China
[3] Baoshan Iron & Steel Co Ltd, Shanghai, Peoples R China
来源：
INTERNATIONAL JOURNAL OF APPLIED GLASS SCIENCE | 2020年 / 11卷 / 04期
关键词：
CaO; (SiO2 + Al2O3); cooling; molten blast furnace slag; thermal properties; viscosity; SILICATE GLASSES; HEAT-TREATMENT; CERAMICS; KINETICS; TEMPERATURE; MECHANISM; BASICITY; CAO/SIO2; ORDER; RATIO;
D O I：
10.1111/ijag.15054
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Molten blast furnace slag (BF slag) was modified using liquid-liquid mixing method for glass ceramics preparation, and the structure and viscosity of glass melt after modification were investigated. The BF slag proportion increased from 52.72 wt. % to 67.05 wt. %, and CaO/(SiO2 + Al2O3) also varied from 0.33 to 0.47. The structure of BF slag melt after modification was investigated using Si-29 and Al-27 MAS NMR spectra. With increasing CaO/(SiO2 + Al2O3), the amount of Q(1) remarkably increased while that of Q(2) decreased significantly. Specifically, when CaO/(SiO2 + Al2O3) was more than 0.38, Q(3) disappeared in glass melt. The viscosity of glass melt with CaO/(SiO2 + Al2O3) of 0.47 exhibited a steep change at 1169 degrees C, which was mainly caused by the sufficient crystallization of gehlenite confirmed by DTA cooling analysis, XRD, and FE-SEM-EDS analysis.
引用
收藏
页码：676 / 684
页数：9
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