Thermodynamic Model of Calculation of Sulfur Distribution Ratio between B₂O₃-Containing Slag and Molten Steel

Abstract:

A thermodynamic model of calculation of sulfur distribution ratio between B₂O₃-containing slag and molten steel has been developed on the basis of the ion and molecule coexistence theory. Based on the model, the effects of B₂O₃ content and slag basicity on the sulfur distribution ratio in 1873K were investigated respectively. The results indicate that the sulfur distribution ratio decreased with increasing the content of B₂O₃, and when the content of B₂O₃ exceeds 6%, the sulfur distribution ratio was lower than 2.0. Therefore, in order to ensure the desulphurization ability of slag, the content of B₂O₃ should be controlled at about 6%. Moreover the sulfur distribution ratio can be increased by increasing the slag basicity.

• Periodical: Applied Mechanics and Materials (Volumes 633-634)
• Pages: 188-191
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.633-634.188
• Online since: September 2014
• Authors: Xiang Zhu, Yang Li, Xiao Jian Fan, Hong Ming Wang*, Gui Rong Li
• Keywords: B₂O₃-containing Slag, Coexistence Theory, Sulfur Distribution Ratio, Thermodynamic Model

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