Cyclone overflow particle size setting control

Both the rod mill and the gravel mill discharge into the pump pool, and the sand pump enters the hydrocyclone to classify. The control loop consists of three stages of controllers. The POM-200 particle size analyzer is used to detect the slurry size Z _{8 of the} product. The electromagnetic flow meter is used to detect the water supply volume F _{4 of the} sand pump pool. The gamma ray concentration meter is used to detect the slurry concentration at the outlet of the sand pump. D ₆ . The size of the overflow slurry of the cyclone is closely related to the concentration of the slurry entering the cyclone. Under other conditions, changing the amount of water added to the slurry sand pump pool can change the concentration of the slurry.

The detected value of the particle size analyzer is compared with the manual set value, and the deviation is calculated by the particle size controller (8) as the concentration given value of the next-level controller 6; compared with the measured value D6 of the concentration meter, the deviation value is controlled by the concentration After the operation of the device 6, the output value is used as the feed water setting value of the next-stage control ring; it is compared with the actual sand pump pool water supply amount F4, and the deviation is calculated by the feed water constant value controller 4 to adjust the sand pump pool water supply valve. The opening degree, thereby changing the ore concentration of the cyclone, ensures that the overflow product particle size is stable within a given range. The control principle is shown in Figure (III).

Figure Rod Mill - Cyclone Control System Block Diagram