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中南大学学报(英文版)

Journal of Central South University

Vol. 23    No. 12    December 2016

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Effects of MgO content and CaO/Al2O3 ratio on surface tension of calcium aluminate refining slag
XU Ji-fang(许继芳)1, ZHANG Jie-yu(张捷宇)2, CHEN Dong(陈栋)1, SHENG Min-qi(盛敏奇)1, WENG Wen-ping(翁文凭)1

1. Shagang School of Iron and Steel, Soochow University, Suzhou 215021, China;
2. State Key Laboratory of Advanced Special Steel, Shanghai University, Shanghai 200072, China

Abstract: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.

 

Key words: surface tension; slag; MgO content; mass ratio of CaO to Al2O3

中南大学学报(自然科学版)
  ISSN 1672-7207
CN 43-1426/N
ZDXZAC
中南大学学报(英文版)
  ISSN 2095-2899
CN 43-1516/TB
JCSTFT
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