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

被引：11

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

页码：676 / 684

页数：9

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