目前，直吹式制粉系统已经成为大型燃煤锅炉制粉系统的主要形式之一。探讨某电厂2×1 000 MW超超临界机组的锅炉配套制粉系统的性能，对磨煤机动态分离器转速特性、磨辊加载压力调整试验和磨煤机出力特性进行了数据分析；同时，对影响磨煤机出力和单耗的因素如磨煤机出口温度﹑通风量﹑磨碗差压等也进行研究，得出该磨煤机的经济运行参数，可以在保证合适的煤粉细度和均匀指数的情况下，提高制粉系统出力，降低制粉系统单耗，从而提高机组运行的经济性。

The direct firing pulverizing system is dominant in the coal pulverizing system of large-scale coal boiler. The performance of pulverizing system is discussed matching with 2×1 000 MW ultra-supercritical boilers of a power plant. The speed characteristics of the dynamic separator, the adjustment test for grinding roll loading pressure and mill capacity characteristics are analyzed. Furthermore, the effects of mill outlet temperature, ventilation rates and grinding bowl differential pressure on mill capacity are investigated. As a result, the economic operation parameters for the coal pulverizer are obtained, that could enhance the output, reduce the single consumption and improve the running economy of the units under proper coal fineness and uniform index.