| This paper focuses on the TRMK56.3 cement vertical roller mill and systematically analyzes the issues encountered during the initial operation stage, including unstable material bed, frequent vibration trips, and failure to meet production and quality targets. Based on an in-depth study of material bed formation and the matching relationship between airflow and temperature, a series of targeted structural and process optimizations were implemented. These measures include modification of the dam ring, optimization of the nozzle ring guide vanes, adjustment of the water spraying system, improvement of the central feeding pipe, and optimization of the dust collection system. In addition, controlling feed particle size and optimizing air system parameters contributed to stabilizing the material bed and improving grinding efficiency. After the modifications, the system achieved stable operation, with production capacity increased from the designed 230 t/h to approximately 300 t/h, along with significant improvements in specific surface area and fineness, while maintaining reasonable power consumption. The study demonstrates that material bed stability and airflow matching are critical to efficient VRM operation and provides valuable reference for similar cement grinding systems. |