The Melting Temperature of CaO-(2CaO•SiO₂)-B₂O₃-SiO₂-(Al₂O₃) Slag System

Abstract:

The melting temperatures of CaO-(2CaO•SiO2)-B2O3-SiO2-(Al2O3) slag system were investigated. The results indicate that B2O3 has significant fluxing effect on this slag system. When the content of B2O3 is about 10% in these slag system, the mass ratios of w(CaO)/w(SiO2) and (CaO)/w(Al2O3) can be controlled in the scope of 1.5-8.0, the melting temperature of slag is still lower than 1340°C, which is suitable for steelmaking and secondary refining process. As a conclusion, when 10% B2O3 is employed as fluxing agent, a kind of CaO-based slag system with ultra-high basicity, ultra-low alumina content as well as low melting temperature can be obtained.

• Periodical: Applied Mechanics and Materials (Volumes 217-219)
• Pages: 35-38
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.217-219.35
• Online since: November 2012
• Authors: Hong Ming Wang, Pei Si Li, Gui Rong Li, Mian Zhang, Zhao Zhao, Yu Tao Zhao
• Keywords: Boron Containing Slag, Fluorine-Free Slag System, Melting Temperature

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