Fine Grinding Considerations

Fine grinding materials–down to the micron, sub-micron, or even into the nano level–is more complex than just reducing particle size.

First, knowing and understanding the existing properties of the material to be processed is vital in order to select the right equipment. For example, hardness is one important characteristic to consider, since the type of grinding media and the amount of fine grinding relate directly to the hardness of the material to be ground.

Other important properties include: 

  • Temperature Sensitivity
  • Chemical Reactivity
  • Abrasiveness
  • Toxicity
  • Flammability
  • Viscosity
  • Consistency of Starting Size
  • Product Purity

If dry processing: 

  • Bulk Density
  • Moisture Content
  • Flowability

Second, knowing what are the critical chemical and physical requirements for the end material that one is trying to achieve is essential in selecting the correct level of grinding. A sharp particle size distribution may be important, but in many other situations, other requirements are more important, such as: 

  • Surface Area
  • Aspect Ratio
  • Compactability
  • Particle Shape
  • Dispersion Stability
  • Opacity
  • Flowability
  • Tap Density
  • Levels of Contamination

Our expertise lies in matching the right grinding equipment and process to the material our clients need to process. 

Contact Union Process for help with your next fine grinding project:

Call us at 330.929.3333, contact us or find a rep in your area.