Disc stack centrifuges, also known as Disc Separators, utilize powerful centrifugal forces to separate solids from one or two liquid phases in a continuous process. The high forces cause the denser solids to move towards the rotating bowl wall while the less dense liquids form inner layers. This interface point can be adjusted to optimize the separation process with optimal efficiency.

The inclusion of special plates known as the “disc stack” significantly increases the surface settling area, resulting in a much faster separation process. The unique configuration, shape, and design of these plates allow a disc stack centrifuge to effectively separate a variety of solids from either one or two liquids. Depending on the centrifuge model and the amount of solids present, the concentrated solids phase can be continuously, intermittently, or manually extracted.

The clarified liquid phase overflows near the axis of rotation, in the top outlet area of the bowl. From there, the liquids are directed into individual chambers where they are separated. These separated liquid phases are then ejected from the bowl either by the force of gravity or by using a specialized pumping device known as a paring disc. To ensure safety and avoid cross-contamination, the chambers can be sealed off from each other.