Research on Prediction and Optimization of Flue Pressure in Sintering Process Based on SHAP

Sinter is the core raw material for blast furnace. Flue pressure is an important state parameter which affects the quality of sinter. To predict the flue pressure and take targeted adjustment measures, this paper studied the flue pressure prediction and optimization based on the SHAP. Firstly, sintering process data was collected and processed. A flue pressure prediction model was constructed after comparing different feature selection methods and model algorithms by SHAP+ET. The prediction accuracy of model within the error range of ± 0.25 kPa was 92.63%. SHAP analysis was used to improve the interpretability of prediction model. We analyzed the influence of various sintering operation parameters on flue pressure, the relationship between numerical range of key operation parameters and flue pressure, the effect of operation parameter combinations on flue pressure and the prediction process of flue pressure prediction model on a single sample. A flue pressure optimization module was constructed and analyzed when the prediction met the judgment conditions. Operating parameter combination was pushed. During the verification process, the flue pressure was increased by 5.87%, achieving a good optimization effect.