hrdrocyclone cut point for Particle

Nov. 5, 2012 - PRLog -- Particle separation in cyclones can vary considerably depending on such factors as feed head, mud weight, percent solids, and properties of the liquid phase of the mud. Generally speaking, increasing any of these factors will shift the cut point curve to the right, increasing the size of solids actually separated by the cyclone.

By itself, the cut point does not determine a cyclone’s overall efficiency because it ignores the liquid loss rate. The amount of fluid in the cone underflow is important; if the solids are too dry, they can cause “roping” or “dry-plugging” of the underflow.

In contrast, a cyclone operating with a spray discharge (see Figure below) gives solids a free path to

exit. A cone operating in spray discharge will remove a significantly greater amount of solids than a cone in “rope” discharge.

by the inner spiral reporting to the overflow. Solids which otherwise would be separated are forced into the overflow stream and returned to the mud system. This type of discharge can also lead to plugged cones and much higher cyclone wear.

While a spraying cyclone appears to discharge more fluid, the benefits of more efficient solids removal and less cone wear outweigh the additional fluid loss. In cases where a dry discharge is required, the underflow from hydrocyclones can be screened or centrifuged to recover the free liquid.

More info, please contact GN Solids Control Co., Ltd.

http://www.gnsolidscontrol.com/