How does a centrifuge separate mixtures

A centrifuge is a device that uses centrifugal force to achieve liquid-liquid separation or liquid-solid separation according to different principles of sedimentation coefficient, mass, density of substances in the mixture. Among centrifuge system, there are different separating methods. Different centrifuge systems have different separating methods, which both have their characteristics. Now let’s see what the different separating methods are:

1.Decanter centrifuge separating method is to separate substances with sedimentation coefficient and buoyant density through being accelerated by strong centrifugal force that is produced by high-speed motor.

2.Filter centrifuge separating method is to pull out the liquid-phase substances by strong centrifugal power that is produced by high-speed rotary drum. When the liquid-phase substances are pulled out, the solid-phase substances will stay in the rotary drum.

3.Isotope separating method is the purpose of concentrating a particular isotope by removing other types of isotopes of a chemical element.

4.Isopycnic separating method is to separate substances with different density. During the centrifugal process, the particles move to a zone of the same density as itself. The density is chosen such that the range of gradients includes the density of all particles to be separated. The sample can be above the density gradient liquid particles or evenly distributed in the density gradient. After centrifugation, the sample particles reach their equilibrium point.

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