High-speed, precision-balanced centrifuge

The M-I SWACO CD-500 centrifuge is a high-speed, precision-balanced rotating stainless steel bowl. A single-lead spiral-screw conveyor inside the bowl rotates in the same direction as the bowl, but at a lower RPM.

Clean fluid discharge

Feed slurry enters through a hollow axle at the narrow end and is distributed to the bowl. Centrifugal force as high as 379 gn at 1,200 rpm (or 2,066 gn at 2,800 rpm) holds the slurry against the bowl wall in a "pool." Trapped silt and sand-sized particles settle and spread against the bowl wall where they are conveyed to the solids underflow discharge ports by the tungsten-carbide-tipped scroll flights on the conveyor. Silt and sand particles exit damp, but with no free liquid. The cleaned fluid is discharged through weirs that regulate the pool depth.