RAW FLUX MIXTURE FOR THE CONTINUOUS CASTING OF STEEL

摘要

The present invention is directed to raw mix flux for the continuous casting of steel wherein the flux composition consists of a mixture of ceramic raw material having the following theoretical analysis based on the composition formed on melting the raw materials: K2O: 0 to 5 percent by weight Na2O: 20 to 35 percent by weight CaO: 5 to 25 percent by weight MgO: 0 to 1 percent by weight Al2O3: 3 to 10 percent by weight B2O3: 15 to 30 percent by weight SiO2: 5 to 20 percent by weight F: 10 to 25 percent by weight Fe2O3: 0 to 1 percent by weight and wherein the percentages of said ingredients total 100 percent by weight.