A fruorine-free mold flux for the
continuous casting of steel and method for producing the same relates to a mold flux for the
continuous casting of new steel grade, which accord with the requirement of protecting
natural environment. The characteristic is in that the mold flux contains the fellowing compositions and performance range: 23-40% SiO2, 20-4-% CaO, 0.5-10% MgO, 0.5-10% Al2O3, 0.5-10% MnO2, 2-15% Na2O, 5-15% B2O3, and 0.5-10% C; the
melting point is 800-1200 DEG C, the
viscosity is 0.2-5 pt, and the crystallizer rate is 0.1-30%. The advantages of the invention are in that the fruorine-free mold flux can alternatively act the role of the
fluorine component, according with the
continuous casting conditions (steel grade,
casting speed, and the like). In this way, uniform fusing characteristic, fluidity and
viscosity are improved or promoted, and the mold flux is contributed to the improvement of the
operational stability and the product quality with the smooth workability in the continuous
casting process by singly or in combination use.