A decanter centrifuge is a device that creates a centrifugal force, and imparts that centrifugal force to its components by rotation.
The centrifugal force created by the centrifugal is dependent on the diameter and RPM of the bowl. To calculate the g force, use the flowing formula:
“g” force for centrifuge
G’s = RPM2(0.0000142)(Diameter of bowl, inches)
Example: 24” bowl, 1530 rpm
G’s = (1530)2(0.0000142)(24)
The performance of a centrifuge for a given mud is dependent on the following factors:
1. The g’s exerted on the fluid
2. The retention time in the centrifuge (the longer the mud is in the centrifuge the smaller the particle that can be separated)
3. Conveyor differential (the faster the differential, the wetter the solids and the more solids are discharged)
All of the above are factors which are considered in different designs. Some designs perform better for different applications. Designs often vary in bowl diameter, length, RPM operating range, gear ratio, pool depth. Etc.
The items which can typically be manipulated in a centrifuge operation are the feed rate and dilution (if any), the gear ratio (by changing gear box), the pool depth (by changing the weir settings), and the rpm (by changing the sheaves), which changes the g force.

To calculate the RPM of a centrifuge, use the following method:
RPM of a centrifuge
RPM=(size of motor’s sleave/size of rotating assembly)x rpm of motor

GN centrifuge has the small capacity and big capacity for your choice in different applications. More solids control equipment at GN solids control