Effect of B2O3 Substituted for CaF2 as Fluxing Agent on Melting Temperature of Converter Slag

Ting Wang Zhang; Hong Ming Wang; Gui Rong Li; Xun Yin Zhang

doi:10.4028/www.scientific.net/AMR.538-541.2203

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 538-541Effect of B2O3 Substituted for CaF2 as Fluxing...

Effect of B₂O₃ Substituted for CaF₂ as Fluxing Agent on Melting Temperature of Converter Slag

Abstract:

B2O3 is used as fluxing agent of converter slag to substitute for CaF2 so as to reduce fluorine pollution and decrease the melting temperature. Hemisphere method is used to measure the melting temperature of samples. Effect of ω(CaO)/ω(SiO2), content of Fe2O3 and content of B2O3(CaF2) on the melting temperature of CaO-SiO2-F2O3-B2O3(CaF2) system have been studied. Results indicate that the melting temperature of samples are decreased when B2O3 substitute for CaF2 equally with equal ω(CaO)/ω(SiO2) and content of Fe2O3 [ω(CaO)/ω(SiO2)=1.5~5.0, Fe2O3=0~30%], the melting temperature of samples are decreased remarkably with the increase of content of B2O3 [ω(CaO)/ω(SiO2)= 2.5].