Viscosity Model for Blast Furnace Slags Including Minor Elements
Viscosity is one of the most important metallurgical properties of ironmaking slags.In the present study,the viscosities of SiO2-CaO-Al2O3-MgO based slags containing minor elements,including Na2O,K2O,FeO,CaF2,B2O3,CaS,TiO2 and MnO have been systematically studied.The viscosities of synthetic slags with the additions of minor elements have been measured using the rotational rheometer at high temperature.After viscosity measurement,the sample was quenched,mounted,polished and analysed by electron probe micro-analysis.It was found that all of minor element additives will decrease the slag viscosity.The ability to reduce the viscosity can be ranked as CaF2> B2O3 > CaS > Na2O >K2O > TiO2 > MnO > FeO.Based on the present measurements and available viscosity data from literatures,a viscosity model was proposed to describe the viscosity of SiO2-CaO-Al2O3-MgO based slags containing minor elements.The model predictions were found to have an outstanding agreement with the experimental data at blast furnace(BF)slag composition range.The present work will improve the understanding of the behaviours of BF slags with inclusion of minor elements.The viscosity model developed will be used for industrial process optimization.
blast furnace ironmaking slag minor element viscosity
Chen Han Mao Chen Weidong Zhang Zhixing Zhao Tim Evans Baojun Zhao
The University of Queensland,Brisbane,Australia Shougang Research Institute of Technology,Beijing,China Rio Tinto Iron Ore,Australia
国内会议
上海
英文
1-6
2015-10-21（万方平台首次上网日期，不代表论文的发表时间）