Model for Evaluating Density of Molten Slag With Optical Basicity

• 作 者: CHOU Kuo-chih
• 机 构: School of Metallurgical and Ecological Engineering,University of Science and Technology Beijing,Depa
• 出 处: Journal of Iron and Steel Research(International)
• 发表日期: 2010年04期
• 关键词: Arrhenius molten intrinsic ionic Pauling tempera deviation difficulty elevated m

A new model is proposed to estimate the density of molten slag,in which the temperature dependence of density is described by Arrhenius Law with the activation energy expressed as the linear function of optical basicity.Successful applications to the density calculations of CaO-Al2O3-SiO2 and Al2O3-CaO-MgO-SiO2 slag systems show that this formula can give a good description of composition and temperature dependence of density for molten slags.It is also found that the ionic band percentage of M-O band in MOx oxide is the intrinsic origin of the phenomenon that the slag with a high optical basicity has a large sensitivity to temperature.

A new model is proposed to estimate the density of molten slag, in which the temperature dependence of density is described by Arrhenius Law with the activation energy expressed as the linear function of optical basicity. Successful applications to the density calculations of CaO-Al2O3-SiO2 and Al2O3-CaO-MgO-SiO2 slag systems show that this formula can give a good description of composition and temperature dependence of density for molten slags. It is also found that the ionic band percentage of MO band in MOx oxide is the intrinsic origin of the phenomenon that the slag with a high optical basicity has a large sensitivity to temperature.