Decisive Factors of Decanter Centrifuge Machine

Decanter centrifuge is usually installed after the desilter in drilling mud system. The drilling mud from the desilter is pumped through the inlet to the feed chamber and slung from the feed ports into the pool. It is accelerated again with a high shearing effect due to the rotation of the bowl. The level of the pool is determined by adjustment of the weirs at the large end of the bowl (effluent discharge).

Decanter Centrifuge Machine

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

Established in 1992,KOSUN is thet professional manufacturer of drilling mud solids control system in China, KOSUN is a vital part of the world hydrocarbon exploration and production industry, as well as one of top three solids control equipment suppliers in China, which offers its products for CNPC, CNOOC ,HH, Gazprom, RG, etc.