Deciding Factor of Decanter Centrifuge Performance

The particles that cannot be settled under the existing settings of the decanter centrifuge will discharge out the overflow with the liquid phase (effluent).

The performance of a decanter 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.

http://www.decantingcentrifuge.com/products/drilling-waste-management/hi-g-dryer-shaker.html

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

In addition, shale shaker for solids control are devices that remove drill cuttings from the drilling fluid while circulating and drilling. There are many different designs and research into the best design is constantly ongoing since solids control is vital in keeping down costs associated with the drilling fluid. The basic design consists of large, flat sheets of wire mesh shaker screen or sieves of various mesh sizes that shakes or vibrates the drill cuttings, commonly drilling shale shaker, across and off of the screens as the drilling fluid flows through them and back into the drilling fluids processing system, often called a mud system....