Calculation on the Desulfurization Thermodynamic of CaO-Al₂O₃-SiO₂-TiO₂ Slag System

Abstract:

The desulfurization ability of CaO-Al₂O₃-SiO₂-TiO₂ slag at 1873 K was studied through theoretical calculation by using thermodynamic software FactSage. The effect of binary basicity is significant, compared with the mass percentage factors of Al₂O₃ and TiO₂. Under the optimal experimental conditions, with the binary basicity is 7, the mass percentage of Al₂O₃ is 30 % and TiO₂ is 3 %, the corresponding highest sulfur distribution coefficient for the slag are 58.14. While the content of TiO₂ in the CaO-Al₂O₃-SiO₂-TiO₂ slag is in a range lower than 3-4 %, the desulfurization ability of the CaO-Al₂O₃-SiO₂-TiO₂ slag is equal to that of the CaO-Al₂O₃-SiO₂ slag. The slag system with TiO₂ can meet the desulfurization requirements of steelmaking, which is a good way for resource utilization of solid waster containing titanium.

• Periodical: Applied Mechanics and Materials (Volume 563)
• Pages: 57-61
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.563.57
• Online since: May 2014
• Authors: Kai Dong*, Long Wu, Wen Juan Liu
• Keywords: Desulfurization, FactSage, Refining Slag, Thermodynamic

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