The liquid phase clarity after clarification of the horizontal spiral settling centrifuge (hereinafter referred to as decanter) is determined by the following two factors:
- The effective centrifuge acting on the liquid phase of the drum settling zone.
- The average residence time of liquid phase in the drum settling zone.
Similarly, the moisture content of the solid phase after dehydration of the centrifuge is determined by two factors: the effective centrifugal force acting on the solid phase in the dehydration zone of the drum. The average residence time of solid phase in the dehydration zone of drum. By adjusting the running state of the centrifuge, the above factors can be controlled in a certain range in order to obtain a better separation effect.
Generally, the drum speed range is roughly set for the separated material, and then the differential speed and overflow plate are adjusted according to the separation of the centrifuge to obtain a better separation effect.
The adjustment of differential speed and overflow plate generally has several rules with the liquid phase clarification and the solid phase moisture content: relatively small differential speed will reduce the solid phase moisture content, but the liquid phase clarification will be reduced. The higher the differential speed will increase the clarity of liquid phase, but the moisture content of solid phase will increase. The smaller inner diameter of the overflow plate will improve the clarity of the liquid phase, but the moisture content of the solid phase will increase. The larger inner diameter of the overflow plate will reduce the moisture content of the solid phase, but the clarification of the liquid phase will be reduced.
