Perforated Basket Centrifuge

Principles of Perforated Basket Centrifuge

• The perforated basket centrifuge operates on the principle of centrifugal force, which separates solids from liquids in a slurry by spinning the mixture at high speeds.
• The centrifugal force drives the liquid through the perforations in the basket, leaving the solid particles behind.

Construction of Perforated Basket Centrifuge

1. Basket: Cylindrical basket with perforated walls.
2. Drive System: Motor and spindle that rotate the basket at high speeds.
3. Housing: Outer casing that contains the basket and collects the separated liquid.
4. Feed System: Mechanism to introduce the slurry into the basket.
5. Discharge System: Mechanism to remove the separated solids from the basket.
6. Control Panel: For controlling the operational parameters like speed and timing.

Working

1. Loading: The slurry is fed into the rotating basket.
2. Centrifugation: As the basket spins, the centrifugal force drives the liquid through the perforations in the basket wall.
3. Filtration: The solid particles are retained on the inner surface of the basket, forming a cake.
4. Discharge: After the separation is complete, the machine is stopped, and the solid cake is discharged manually or through an automated system.
5. Collection: The separated liquid is collected in the housing and drained off through an outlet.

Uses

• Chemical and pharmaceutical industries for solid-liquid separation.
• Food and beverage industry for clarification and purification processes.
• Wastewater treatment for sludge dewatering.
• Mining and mineral processing for ore and mineral separation.

Merits

• Effective for separating fine particles.
• High filtration efficiency.
• Relatively simple and robust construction.
• Can handle large volumes of slurry.

Demerits

• Requires manual intervention for cake removal.
• Limited to batch processing.
• Potential for clogging of perforations.
• Higher maintenance due to moving parts.

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