Effect of MgO on solidification and crystallization properties of ultrahigh-basicity mold flux

被引：0
|
作者：
Chen, Yang [1 ,2 ]
Li, Min [1 ,2 ]
Wang, Shisong [3 ]
Zhu, Lilong [4 ]
Zhang, Xubin [1 ,2 ]
He, Shengping [1 ,2 ]
Wang, Qiangqiang [1 ,2 ]
机构：
[1] Chongqing Univ, Coll Mat Sci & Engn, Chongqing 400044, Peoples R China
[2] Chongqing Univ, Chongqing Key Lab Vanadium Titanium Met & Adv Mat, Chongqing 400044, Peoples R China
[3] Qingdao Special Steel Co Ltd, Steelmaking Plant, Qingdao 266400, Shandong, Peoples R China
[4] Chongqing Univ Sci & Technol, Chongqing, Peoples R China
来源：
MATERIALS CHEMISTRY AND PHYSICS | 2022年 / 276卷
基金：
中国国家自然科学基金;
关键词：
MgO; Ultrahigh-basicity; Break temperature; Solidification; Crystallization properties; MAGNETIC-PROPERTIES; BEHAVIOR; NA2O;
D O I：
10.1016/j.matchemphys.2021.125403
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The effect of MgO on the solidification and crystallization properties of ultrahigh-basicity mold flux was analyzed (i.e., comprehensive basicity R = 1.75). Results showed that with the increase of MgO content (0-6 wt%), the viscosity, melting temperature and break temperature decreases firstly, and then increases. The change of slag viscosity caused by the change of composition is indistinct, but the variation trend of melting temperature and break temperature is obvious. With the increase of MgO content, the crystallization temperature of ultrahigh basicity slag decreases gradually, while the crystallization rate decreases firstly, and then increases. When the MgO content reaches 3%, the crystallization rate is the minimum. Research found that Ca4Si2F2O7 is the main precipitated phase in the slag, and as the MgO content continues to increase, the new phases of CaF2 and Ca3MgSi2O8 appear gradually.
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页数：8
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