Non-Perforated Basket Centrifuge

Principles of Non-Perforated Basket Centrifuge

• The non-perforated basket centrifuge also operates on the principle of centrifugal force but uses a solid-walled basket.

• Separation occurs due to the difference in density between the solid and liquid phases, with solids accumulating on the inner wall of the basket and the liquid being removed separately.

Construction

Non-Perforated Basket Centrifuge

1. Basket: Solid-walled cylindrical basket without perforations.

2. Drive System: Motor and spindle to rotate the basket at high speeds.

3. Housing: Outer casing to contain the separated liquid and solids.

4. Feed System: Mechanism to introduce the slurry into the basket.

5. Discharge System: Mechanism to remove the separated solids and liquids.

6. Control Panel: For controlling 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 causes the denser solid particles to move outward and accumulate on the inner surface of the basket.

3. Separation: The liquid remains closer to the center and is removed through a discharge port or siphon.

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 and drained off through an outlet.

Uses

• Chemical and pharmaceutical industries for solid-liquid separation.

• Oil refining for separating impurities from crude oil.

• Dairy industry for cream separation.

• Industrial processes requiring clarification of liquids.

Merits

• Suitable for handling highly viscous and dense slurries.

• Less risk of clogging compared to perforated basket centrifuges.

• Can handle continuous operations with proper discharge systems.

• Simplified maintenance due to fewer perforations.

Demerits

• Lower efficiency for separating fine particles compared to perforated basket centrifuges.

• Manual removal of the solid cake can be labor-intensive.

• Higher energy consumption due to the solid-walled basket.

• Limited capacity for handling very fine suspensions.