关键词: 60t AOD, 精炼渣系, 全氧含量, 生产实践

Abstract: With the thermal compensation technology including using CO secondary burning, 3.5% ~5.0% Si high carbon ferrochromium and alloys baking, the reduced product SiO, decreases by 800 kg to increase the deoxidation ability of silicon； with controlling AOD slag basicity 2.3~2.4 and carried out secondary reduction in AOD refining, and adding 5 kg/t active lime in LF refining process, the efficiency of deoxidation and desulphurization increases by more than 30% ； and with ( CaO)/( SiO₂)= 2.2 of CaO-SiO₂-MgO slag series controlling adding amount of fluorite amounting to 13%~17% of the total lime to get better slag viscosity and be available to slagging and absorbing inclusions, the total oxygen content in Φ5.5 mm wire rod decreases to 30 x 10^-6 ~ 40 x 10^-6 from 60 x 10^-6~ 90 x 10^-6 before optimization and the S content decreases to 0.003% ~0.007% from original 0.005% ~ 0.010% .