Comparison of Effects of B₂O₃ and CaF₂ on Metallurgical Properties of High Basicity CaO-Based Flux

Abstract:

B₂O₃ is employed as fluxing agent of high basicity CaO-based flux to substitute for CaF₂. The effects of B₂O₃ and CaF₂ on the metallurgy properties of CaO-based flux were investigated. The results indicate that the fluxing action of B₂O₃ is better than that of CaF₂. For the high basicity CaO-based flux, when CaF₂ is substituted with B₂O₃, the melting temperature can be decreased remarkably. Especially, when the mass ratios of CaO/SiO₂ are in range of 5.25~8.0, the flux melting temperature is lower than 1300 °C. The inflection point temperature of flux viscosity-temperature curve is lowered remarkably when B2O3 is employed to substitute for CaF₂. Meanwhile, the desulfurization capacity of flux can be improved markedly when CaF₂ is substituted with equal mass of B₂O₃.

• Periodical: Advanced Materials Research (Volumes 311-313)
• Pages: 966-969
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.311-313.966
• Online since: August 2011
• Authors: Hong Ming Wang, Li Li Yang, Hua Zhu, Yong Qi Yan
• Keywords: Boron Oxide, Calcium Fluoride, CaO-Based Refining Flux, Metallurgical Properties

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