Nov 07

Decanting Centrifuge is widely used in solids control system. It can separate more fine solids and recovery barite.

A centrifuge works on the principle of accelerated settling. By imparting addition “G” forces to the content of a centrifuge, solids (in a solids laden
fluid) will settle much quicker. To understand how a decanting centrifuge works, first look at a simple sedimentation vessel. Solids in this fluid will settle to the bottom of the vessel over a period of time. One way to speed the process of settling is to reduce the height of the vessel so the solids do not have as far to drop. If a specific volume is required, the vessels dimensions can be lengthened or widened . Depending on the rheological properties of the fluid and the size and density of the solids, settling time can still prove quite slow.

A centrifuge provides a method of increasing the settling force on particles suspended in liquid. The force depends on the mass of the particle
and not the chemical composition. Particles with the same mass, whether they are a barite, low gravity solids, gold, iron or silver will settle at the same rate. Centrifuges are able to separate solids above and below the 2- to 10- micron size range. In weighted drilling fluids, centrifuges are capable of eliminating very small particles that can cause dramatic increases in both the low and high shear rate viscosities. In unweighted drilling fluid they are used as “super desilters”.

GN Solids Control manufacture over 150 units centrifuges every year.  Customers give us positive feed back on using our centrifuges. GN’s equipment and whole systems have been exported to over 60 regions and countries.  Look forward to cooperate with you.



written by GN Shale Shaker

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