Effects of MgO content and CaO/Al₂O₃ ratio on surface tension of calcium aluminate refining slag

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• 作者：Ji-fang Xu 许继芳 ; Jie-yu Zhang 张捷宇 ; Dong Chen 陈栋…
• 关键词：Key wordssurface tension ; slag ; MgO content ; mass ratio of CaO to Al2O3
• 刊名：Journal of Central South University
• 出版年：2016
• 出版时间：December 2016
• 年：2016
• 卷：23
• 期：12
• 页码：3079-3084
• 全文大小：
• 刊物类别：Engineering
• 刊物主题：Engineering, general; Metallic Materials;
• 出版者：Central South University
• ISSN：2227-5223
• 卷排序：23

文摘

Surface tension of calcium aluminate refining slag was measured by the Slide method at 1823 K. Based on different levels of the MgO content and the mass ratio of CaO to Al₂O₃, the effects of MgO content and the mass ratio of CaO to Al₂O₃ on surface tension were investigated. The results indicate that surface tension decreased with increasing MgO content (from 0 to 4.86%), followed by an increase with further increasing MgO content up to 11.33%. The trend that surface tension changed with the mass ratio of CaO to Al₂O₃ was the same as the trend that surface tension changed with the MgO content. The surface tension was varied from 0.617 N/m to 0.710 N/m, for the mass ratio of CaO to Al₂O₃ varying between 0.60 and 1.28. An attempt was made to estimate surface tension of CaO−Al₂O₃−MgO slag and its sub-system, and the application showed that the model worked well.