A drilling fluids treatment decanter centrifuge consists of a centrifuge bowl, screw, electric motors, gearbox, feed tube, solids discharge trough, fluids outlet port, bearing block, Ex control panel, cusions, telescopic skid or supporting legs. A decanter centrifuge used in drilling fluids treatment system is typically used to :
1)    separate fine solids up to 2 microns, to keep the drilling fluids balanced
2)    separate barite from used drilling fluids and reuse it
3)    dewatering the hydrocyclone underflow

As a decanter centrifuge manufacturer in China, GN solids control can produce decanter centrifuge models as below:
1.    drilling mud processing decanter centrifuge:
14 inch bowl decanter centrifuge GNLW363D for low gravity separation
18 inch bowl decanter centrifuge GNLW453D for low gravity separation
18 inch bowl decanter centrifuge GNLW452D for barite recovery
2.    diamond core drilling waste water treatment
9 inch bowl decanter centrifuge GNLW223D and GNLW224ET-VFD
3.    oil sludge separation, mud dewatering, solids liquid separation
14 inch bowl decanter centrifuge GNLW363D, GNLW364ET-VFD
18 inch bowl decanter centrifuge GNLW453D, GNLW454ET-VFD
22 inch bowl decanter centrifuge GNLW553D, GNLW554ET-VFD
30 inch bowl decanter centrifuge GNLW764A-VFD
To achieve better separation performance, hydrocyclones separation should be used before decanter centrifuge. The desander cone separation cut point is 45 microns, the desilter cone separation cut point is 15 microns, the solids content is reduced relatively then the fluids are transferred to decanter centrifuge.
For VFD decanter centrifuge, the G force can be adjusted by input different frequency ( to adjust the rotation speed) when bowl diameter is fixed. The high G force up to 3000G will reduce solids conveyance due to torque limitations. The higher of the G force, more solids will be settled in the bowl, more torque is required to move the solids out, until torque limitation is reached, the centrifuge stopped working due to torque protection.