Abstract：This paper introduces the multifunctional application of flue analyse dynamic control steelmaking technique at 120 t converter in Masteel: in view of different raw material condition selfstudy and selfadapt function is used to optimize oxygensupplying and slagmaking schedule and the new mode of full automatic steelmaking technology is achieved. The actual practice proved that this technique has the following remarkable effects: converter bottom blowing stirring effect can be effectively monitored and the value of end point w(［C］)×w(［O］) reach 788% in the range of 00012 to 00030, using flue analyse Co concentration change trend direct operation, splash rate is reduced to below 4%, the effect of dephosphorization and desulphurization are strengthened, molten steel end point oxygen content can be exactly forecasted, the effect of deoxidization and alloying can be increased, the cost of per ton steel is reduced by 5 yuan and the amount of gas recovery of converter is increased by 9 m3/t and CO concentration is improved by 5% to 8%.
