The shale shaker is the only solids control device that makes a separation based on the physical size of the particle. The separation size is dictated by the opening sizes in the shaker screens.Per different drilling mud situation, shale shaker usually use shaker screen vary from API20 to API 325.
Hydrocyclones and centrifuges separate solids based on differences between their relative mass and the fluid. Different speed used per different applicaiton. 
An acceleration of one “G” is the standard acceleration due to gravity
(386 in./sec2).
Most shakers operate at accelerations within the range of 2.5-7.0 G’s, depending upon the vibration pattern. Field experience has shown this range offers the best compromise between throughput capacity and screen life.
Some shakers have adjustable counterweights to vary acceleration.
Although flow capacity and cuttings dryness improves with increased
acceleration, screen life is negatively affected. By reducing the “G”s
when extra flow capacity is available, screen life may be improved.
Waste management vertical cutting dryer is one of the most equipment used for treat oil based mud / cutting.
It is high tech. equipment, there are not many company can make it. GN Solids Control Co., Ltd is among the fewer who can make cutting dryer for oil based mud.
And GN is the only one in China with API certification, and make both solids control and waste management equipment, like cutting dryer, big bowl centrifuge, high G shaker, double deck shaker…
Different with others, GN cutting dryer matched with a flash system to wash the dischage port.
Speed of cutting waste screw conveyor should be average. Too fast, it will waste material or make waste treatment equipment like high G shaker, centrifuge,cutting dryer overload. If speed too slow, upstream equipment cannot get enough feeding.
GN cutting waste scew conveyor with average speed 50 or 60 rpm. GN can also make customised speed per user special requirements.
And length of screw conveyor transfer can vary from 12ft to 48ft max. GN have standard 12ft length for each section. Users easy to change length per different jotsit situation.
Drilling fluids mud agitator usually use small power motor less than 22kw (30hp). In this case, magnetic agitator usually used to control the mud agitator in drilling field. It is a kind of control panel.
Explosion proof mud agitator magnetic start mainly used for oil & gas drilling.
Un-Explosion proof mud agitator magnetic starter mainly used for water well drilling , HDD or other no dig drilling. But mostly, GN engineer will recommend user all choose EX control panel for all drilling site application.
As the cost will not be much different, but lifetime 3 times different.