The Mathematical Model for Indirect Measurement of Carbon Concentration in the Steelmaking Process and its Utilization in Process Control

The contribution deals with the proposal, realization, and verification of the mathematical model for indirect measurement of carbon concentration in the steelmaking process. The carbon concentration in melt is very important data about the steelmaking process, but it is not measured directly and continuously. The carbon concentration is measured only at the end of the process. Therefore, from the point of view of process monitoring and control, the mathematical model for indirect carbon measurement is necessary. The mathematical model is based on the carbon’s material balance, which is given by the carbon in the pig iron and scrap at the input and the carbon in the waste gas in the form of CO and CO2 at the output. The mathematical model was verified on real data, and the results of the analysis of real data and data from the model are given.