Particle classification
TECHNICAL ARTICLE
Particle classification
Separate particles dispersed in a liquid into larger and smaller size groups.
Classification groups solid particles according to particle diameter. A centrifuge can therefore be used not only to separate solids from liquid, but also to adjust the particle-size distribution of a material.
Group particles by size
Adjusting the size range can help achieve the properties and quality required of a material. In practice, particles do not always split into sharply defined groups; the actual result must be evaluated.
A different objective from solid–liquid separation
Solid–liquid separation
Separate liquid and solids, for clarification or solids recovery.
Particle classification
Separate larger and smaller particles to control the particle-size range.
Adjust conditions around the target particle size
Centrifugal force and operating conditions such as feed rate are adjusted towards a target size. First define the desired size range and which group should be recovered, then check the actual material.
Example: improving an ink material
We have applied classification to improve ink-material quality by adjusting the particle-size range and making use of the resulting material properties. Please discuss the specific material, particle size and processing conditions with us.
Information for a classification study
Material
Material type and current particle-size information.
Target fraction
Target particle diameter and which group to recover.
Capacity and purpose
Required throughput and the improvement being sought.