Principles of Elutriation Tank:
- Separates particles based on their settling velocities in a fluid.
- Finer particles are carried upward by the fluid flow, while coarser particles settle at the bottom.
Construction of Elutriation Tank:
- Tank: A vertical tank filled with fluid.
- Fluid Inlet: At the bottom to introduce fluid flow.
- Feed Inlet: For introducing the material to be separated.
- Outlets: Separate outlets for fine and coarse particles.
- Control System: To regulate fluid flow rate and separation efficiency.
Working of Elutriation Tank:
- Material is introduced into the tank where fluid flows upward.
- Finer particles with lower settling velocities are carried upward with the fluid.
- Coarser particles with higher settling velocities settle at the bottom.
- Separated particles are collected at respective outlets.
Uses:
- Classification of particles in the mineral processing, chemical, and pharmaceutical industries.
- Used in wastewater treatment for sediment removal.
Merits:
- Simple design with low operational costs.
- Effective for a wide range of particle sizes.
- Minimal energy consumption compared to other methods.
Demerits:
- Limited to particles with significantly different settling velocities.
- Not suitable for very fine particles that remain suspended.
- Requires large volumes of fluid for effective separation.
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