ENVIRONMENTALLY FRIENDLY FLUX FOR MOLTEN STEEL DESULFURIZATION

摘要

environmentally friendly flux for molten steel desulfurization includes CaO and Al2O3 so that [CaO]/[Al2O3] is within a range of 1.6 to 3.0, and includes one or more alkali metal oxides of Na2O, K2O, and Li2O, and SiO2 so that [SiO2]/[R2O] is within a range of 0.1 to 3, [R2O] is within a range of 0.5 mass% to 5 mass%, and [SiO2] is within a range of 0.05 mass% to 15 mass% in a case in which the [CaO], the [Al2O3], the [SiO2], and the [R2O] represent the mass% of CaO, the mass% of Al2O3, the mass% of SiO2, and the total amount of the mass% of Na2O, the mass% of K2O, and the mass% of Li2O respectively.