Static and Dynamic Control Model of BOF Steelmaking Process and Its Validation With Steel Plant Data

摘要

The Basic Oxygen Furnace is one of the most widely used routes for the production of steel. The process is autogeneous in nature, i.e. the thermal energy is produced from the reaction between oxygen and silicon, manganese, carbon etc., Carbon reaction being the biggest contributor. In our work, we had developed the static and dynamic control model (based upon waste gas analysis and post-combustion control) to predict the raw material requirement and course of various reactions, slag and metal volume and their compositions and waste generation rates and post-combustion ratio inside the converter. The post-combustion ratio in association with volumetric flow rate of waste gas and their temperatures help to predict the behavior of slag formation which is used to control the dry blow/slopping during the process. The model has been successfully validated using the data of JSW Steel Plant in India.