我国磁铁矿选厂,采用的分级设备,多数选厂使用水力旋流器,少数选厂采用螺旋分级机。一般的再磨分级流程如图1所示。生产实践表明,水力旋流器比螺旋分级机的效率高,因而被广泛应用。但在高品位铁精矿的分级时,水力旋流器已不适应,它将被细筛取而代之。 China’s magnetite dressing plant, the use of grading equipment, hydrocyclone used most of the selected plant, a small number of selected plants spiral grading machine. General regrinding grading process shown in Figure 1. Production practice shows that hydrocyclones than the spiral classifier high efficiency, which is widely used. However, hydroclones are unsuitable when classifying high-grade iron concentrates and will be replaced by fine screens.