Colloid Mill
A colloid mill is a machine that is used to reduce the particle size of a solid in suspension in a liquid, or to reduce the droplet size in emulsions. Colloid mills work on the rotor-stator principle: a rotor turns at high speeds (2000 – 18000 RPM. The resulting high levels of hydraulic shear applied to the process liquid disrupt structures in the fluid. Colloid mills are frequently used to increase the stability of suspensions and emulsions, but can also be used to reduce the particle size of solids in suspensions. Higher shear rates lead to smaller droplets, down to approximately 1 µm which are more resistant to emulsion separation.
Advantage
- It has a wide range of use including comminution of slurry- fluid materials.
- No pressure is required for ionization.
- The machine is simply constructed.
- It can be easily adjusted.
- Colloid mill is easy to clean after use
- The machine is self-draining.
- High capacity and minimal requirements.
- Reduced wear as a result of the construction of the rotor-stator with
- toughened steel/corundum.
- Low machine noise level.
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