A Viscosity Estimation Model for Molten Slags in Al2O3-CaO-MgO-SiO2 System

作者：Shu Qifeng^*

来源：Steel Research International, 2009, 80(2): 107-113.

DOI：10.2374/SRI08SP085

• viscosity
• estimation model
• aluminosilicate melts

A model for viscosity estimation of molten slags in the Al2O3-CaO-MgO-SiO2 system is presented in this work. The model is an extension to the viscosity estimation model of molten slags in the CaO-FeO-MgO-MnO-SiO2 system developed before by the present author. The present model has explicitly taken charge compensation into consideration. It is postulated that AI exists in a structural unit MAl2O4 when MO/ Al2O3 > 1 for the Al2O3-MO-SiO2 system (MO=CaO, MgO). MAl2O4 has a similar behaviour as SiO2, i.e. it can form an Al-O-Al network and be depolymerised by network modifying oxides (CaO, MgO). The present model is applied in viscosity estimation of some slags within the Al2O3-CaO-MgO-SiO2 system. A mean deviation of less than 25% is achieved for the present model.

• 出版日期2009-2
• 单位北京科技大学