RESEARCH ARTICLE


Effect of Additives on Melting Point and Viscosity of RH Refining Slag



Xiaoping Liang*, 1, Yang Jin2, Yu Wang1
1 College of Materials Science and Engineering, Chongqing University, Chongqing, 400044, China
1 Steelshop of Forging Factory of China National Erzhong Group Co., Deyang, 618013, China


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© 2011 Liang et al;

open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: https://creativecommons.org/licenses/by/4.0/legalcode. This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

* Address correspondence to this author at the College of Materials Science and Engineering, Chongqing University, Chongqing, 400044, China; Tel: +86-023-65102469; E-mail: xpliang@cqu.edu.cn


Abstract

To get suitable ladle slag which can avoid slag sticking onto the RH immersion tube during RH refining process of IF steel, the effect of composition on melting point and viscosity of RH refining ladle slag was studied by different additives which is based on CaO. The results of melting point and viscosity testing experiments indicates that, the melting point and viscosity of RH refining ladle slag would decrease effectively with the add of experimental additives. During RH refining process of IF steel, adjusting the basicity to 4~5, and the content of Al2O3 to 14%~15% by adding additives, it can avoid slag sticking onto the RH immersion tube efficiently, for the reason that the melting point of ladle slag is about 1280°C, and the viscosity is only 0.65 Pa·s

Keywords: RH immersion tube, slag buildup, viscosity, melting point, additives.