First-principle modeling and simulation of cement rotary kiln

Cement rotary kiln is the core equipment of clinker firing system. The system model is very important for understanding the process of cement calcination and optimizing the operating conditions. In this paper, a detailed first-principle model is proposed, which can describe the change of temperature field and material density field in kiln. By studying the production process of cement rotary kiln, a dynamic model is established for each section according to the first principle mechanism. The unknown key parameters can be inferred from the known parameters in the model. The model is simulated and analyzed dynamically according to the relevant data collected in the actual cement production process. The simulation results of the model match with the actual conditions.