本文讨论了分级设备及循环负荷对磨矿回路产能的影响,特别对循环负荷在磨矿作业中的重要性进行了探讨,明确提出了磨矿回路应被视为一个有机操作单元。根据我国一水硬铝石难磨的特点研究了适宜于一水硬铝石特点的拜尔法原矿浆制备磨矿回路,明确提出格子磨加旋流器一段闭路磨矿流程是目前拜尔法原矿浆制备工艺的最佳选择,该磨矿回路已在山西铝厂工业应用且取得了良好的技术经济效益。 This paper discusses the impact of grading equipment and cyclic loading on the capacity of a grinding circuit. In particular, the importance of cyclic loading in a grinding operation is discussed. It is clearly proposed that the grinding circuit should be considered as an organic operating unit. According to the characteristics of a diaspore refractory in our country, the grinding process of Bayer process ore slurry which is suitable for diaspore was studied. It is clear that the first closed grinding process of the lattice grinding and cyclone is the current Bayer process The best choice of ore slurry preparation process, the grinding circuit has been applied in Shanxi Aluminum Plant and achieved good technical and economic benefits.