Hydrocyclones discharge

Most hydrocyclones are of a balanced design. A properly adjusted,
balanced hydrocyclone has a spray discharge at the underflow outlet and exhibits a central air suction core. Many balanced hydrocyclones can be adjusted so that when water is fed under pressure, nothing discharges
at the apex. Conversely, when coarse solids are added to the feed slurry,
wet solids are discharged at the apex. Even with this adjustment, there
still should be a large opening in the bottom of the cyclone. This will
confirm that the cyclone is hydraulically balanced and discharges at the
bottom (apex) only when solids, which the cyclone can separate, are in
the feed slurry (drilling fluid).

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HYDROCYCLONE

Hydrocyclones are essentially simple devices that convert pressure generated by a centrifugal pump into centrifugal force, causing suspended solids in the mud to be separated from the fluid. This separation is actually accelerated settling due to the increased gravitational force caused by the centrifugal action inside the cone.

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