The Effect of Titanium Carbonitride on the Viscosity of High-Titanium-Type Blast Furnace Slag

被引:18
作者
Xie, Hongen [1 ,2 ]
Yu, Wenzhou [1 ,3 ]
You, Zhixiong [1 ,3 ]
Lv, Xuewei [1 ,3 ]
Bai, Chenguang [3 ]
机构
[1] Chongqing Univ, Coll Mat Sci & Engn, Chongqing 400045, Peoples R China
[2] Pangang Grp Res Inst Co Ltd, State Key Lab Vanadium & Titanium Resources Compr, Panzhihua 617000, Peoples R China
[3] Chongqing Univ, Chongqing Key Lab Vanadium Titanium Met & Adv Mat, Chongqing 400044, Peoples R China
基金
中国国家自然科学基金;
关键词
blast furnace slag; TiO2; titanium carbonitride; viscosity; TIO2; BEHAVIOR;
D O I
10.3390/met9040395
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
In this paper, the effect of titanium carbonitride (Ti(C,N)) on the viscosity of high-titanium-type blast furnace slags was investigated. The different Ti(C,N) contents were achieved by adjusting the reduction degree of TiO2 to reflect the real characteristics of the high-titanium slag. The results show that the viscosity of the slag increased with the increasing Ti(C,N) content and decreased with the rising temperature. A deviation between the measured and the fitted viscosity appeared as the content of the Ti(C,N) was beyond 4 wt%. Furthermore, the apparent viscous flow activation energy of the slag ranged from 106.13 kJ/mol to 235.46 kJ/mol by varying the Ti(C,N) contents from 0 wt% to 4.97 wt%, which was evidently different from the results of previous studies. The optical microscope and energy dispersive X-ray spectroscopy (EDS) analysis show that numerous bubble cavities were embedded in the slags and the Ti(C,N) particles agglomerated in the solidified samples. This phenomenon further indicates that the high-titanium slag is a polyphase dispersion system, which consists of liquid slag, solid Ti(C,N) particles and bubbles.
引用
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页数:10
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