The hydraulic classification
Hydraulic classification consists of separating solid particles suspended in a liquid (pulp) into two distinct particle size fractions – fine (or overflow) and coarse (or underflow). The principle of separation is based on the effective size of the particles by difference in sedimentation velocity in a liquid. This type of classification is made for particle sizes of between 15 and 800 µm.
There are two types of hydraulic classification equipment: gravitational or simple sedimentation classifiers (settlers, spiral classifiers, etc.) and centrifuge classifiers such as hydrocyclones and centrifuges.
CTP has hydraulic separation equipment operating at laboratory scale and pilot scale:
Equipment | Theoretical cut | Capacity (m³/h) |
Hydrocyclone separation banks | 2-25 µm | 0.6-5 |
Hydrocyclone separation skid | 15 µm | 5-15 |
Screw classifiers | 63 µm | 0.6-10 |
