A disc stack separator (or centrifuge) is a high-speed industrial device used to separate mixtures of liquids with different densities, or to remove solid particles from liquids. It uses a rapidly rotating, vertical, cone-shaped bowl containing stacked discs to create a high
Key Components & Operation
Disc Stack: A series of closely spaced, conical, thin, metal plates that increase the settling area for particles, greatly improving separation efficiency.
Separation Principle: The mixture enters the rotating bowl; dense solids move to the outer periphery, while lighter liquid phases move toward the center.
Discharge Mechanisms: Solids are removed continuously, intermittently, or manually depending on the design.
Key Features & Applications
Efficiency: High-speed centrifugal force acts like a, "settling tank wrapped around a center line," allowing for faster and more precise separation than gravity, say Alfa Laval.
Versatility: Used in dairy (milk skimming), biotechnology, pharmaceutical manufacturing, oil purification, wastewater treatment, and chemical processing.
Self-Cleaning: The geometry and surface of the discs often allow for self-cleaning, preventing particle buildup.