18-01-2013, 03:07 PM
Types of centrifuge
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Centrifuges achieve separation by means of the accelerated gravitational force achieved by a rapid rotation.
This can either replace normal gravity in the sedimentation of suspension or provide the driving force in the filtration through a filter medium of some kind.
Principle
The separation is similar in principle to that achieved in a gravity separation process. The driving force is higher because is resulting from the rotation of the liquid: in the case of sedimentation, where the driving force is resulting from the difference in density between the solids particles and the liquid, the separation is achieved with a force from 1000 to 20000 times that of gravity.