Intelligent control method for BOF steelmaking process

In this paper, a new intelligent control method including forecasting model, presetting model, adjusting model and judgment model for BOF steelmaking dynamic process is introduced. The control system is composed of the preset model of the dynamic requirement for oxygen blowing and coolant adding, bath[C] and temperature prediction model, and judgment Expert System for blowing-stop. In the method, Neural Network (NN) technology is used to construct these models above; Fuzzy Inference (FI) is adopted to derive the control law and Expert System (ES) is utilized to judge when BOF blowing stops. The control method of BOF steelmaking process has been successfully applied in some steelmaking plants and improves the bath Hit Ratio (HR) significantly. The industrial application results show that the method is effective.