Vorrichtung und Verfahren zur Teilchentrennung

摘要

An apparatus and method are disclosed for filtering or separating particles. A fluid chamber (222) includes a wall extending between an inlet (228) and outlet (232) to form a fluid chamber interior. The interior converges from a position of maximum cross-sectional area (233) toward the inlet. A groove (290) or a step (294) are formed on an inner surface of the fluid chamber wall to improve particle separation within the fluid chamber. The fluid chamber rotates with a centrifuge rotor. A substance is supplied to the inlet of the chamber. A saturated fluidized bed of first particles forms within the fluid chamber and obstructs flow of second particles through the chamber. Additive substances alter sedimentation velocity of the first particles to modify the filtration characteristics of the saturated fluidized bed.