METHOD OF STEEL CHEMICAL HEATING Russian patent published in 2002 - IPC

FIELD: ferrous metallurgy, particularly, ladle steel treatment. SUBSTANCE: method includes introduction of aluminum into metal, blowing with oxygen through lance immersed into metal and subsequent blowing with inert gas. Consumption of aluminum for chemical heating is determined by expression G_Al=0.624[C]-2.867[Si]-0.448[Mn]+0.042T, where G_Al is consumption of aluminum for steel chemical heating, kg/t; [Si], [Mn], [C] are contents of silicon, manganese and carbon, respectively, in metal test sample prior to conduction of chemical heating, % T; is required temperature of metal heating, C; 0.624, 2.867, 0.448, 0.042 are empirical coefficients obtained by experiments. EFFECT: reduced consumption of materials required for heating, heating quality of metal due to increased efficiency of its heating. 2 ex