A decanter centrifuge operates on the principle of accelerated settling. Particles will settle in a viscous media according to stoke’s low, which in simple form is written as follows:
If a sphere settles in a liquid of known density and viscosity, and the settling rate is measured, then by stokes low the density of the ball or sphere can be calculated if the diameter is known. Or. The diameter can be calculated assuming the density is known.
Principles of the decanting centrifuge: