Abstract: In order to reduce the production cost, the raw material structure was optimized on 100t converter in some plant. The influence of raw material structure change on end point control of converter was avoided through adjusting the hot metal scrap ratio, optimization of slagging and smelting process. The mass fractions of carbon and phosphorus and temperature at end point were controlled, and the oxidization of molten steel was reduced. The ferrous charge consumption in the converter was decreased by 4.87 kg/t, and the carbon-oxygen equilibrium of molten steel at end point was decreased to 0.0027 or so, and the consumption of aluminum was decreased by 1.31 kg/t.

Key words: converter, charge structure, blowing process, optimization