Centrifugation utilizes the strong centrifugal force generated by the high-speed rotation of the centrifuge rotor to accelerate the sedimentation rate of particles in the liquid and separate substances with different sedimentation coefficients and buoyant densities in the sample. Therefore, a centrifuge is needed to generate a strong centrifugal force in order to force these particles to overcome diffusion and undergo sedimentation movement. A centrifuge has a cylinder that rotates at high speed around its own axis, known as the drum, which is usually driven by an electric motor. After the suspension (or emulsion) is added to the drum, it is rapidly driven to rotate at the same speed as the drum. Under the effect of centrifugal force, each group is separated and discharged separately. Generally, the higher the rotational speed of the drum, the better the separation effect. Centrifugation utilizes the strong centrifugal force generated by the high-speed rotation of the centrifuge rotor to accelerate the sedimentation rate of particles in the liquid and separate substances with different sedimentation coefficients and buoyant densities in the sample. Centrifuges are widely used in various industries such as chemical engineering, petroleum, food, pharmaceuticals, mineral processing, coal, water treatment and shipping.

What are the classifications of centrifuges?

Centrifuges that achieve centrifugal filtration and rely on filter screens and the effect of centrifugal force are called filtration centrifuges.

Structural features: Filter screen, drum.

The principle of the filter centrifuge: There are many small holes on the drum wall, and inside the wall, there is a filter screen (filter cloth). The suspension rotates inside the drum, and the liquid phase is thrown out of the screen by centrifugal force, while the solid particles are retained by the screen to form a filter cake, thus completing the separation of solid and liquid.

Habitual scale: Suspensions with high solid content and large solid particles (d> 10μm.