A cost effective way to achieve required particle sizes and production rates.

Cryogenic grinding

Air Products’ PolarFit® cryogenic grinding solutions can help you grind more effectively and efficiently, particularly for heat sensitive or tough-to-mill materials. Whether you have an existing cryogenic or ambient milling system that you need to upgrade, or plan to install a new system, we can help.

Our systems use liquid nitrogen to cool down a feed material prior to and/or during milling to either help prevent its melting or decomposition, or achieve embrittlement. While each product is unique, the major benefits of cryogenic grinding are the same:

  • Higher yield of particles in your target range
  • More uniform particle size distribution
  • Higher production rates
  • Improved product quality
  • Improved process safety due to the nitrogen inertness

From services and liquid nitrogen supply to complete cyrogenic grinding systems, you can rely on Air Products experienced engineers to help you find the best solution for your process.



  • Cryogenic grinding consultancy
  • Liquid nitrogen supply/usage optimization
  • Cryogenic size reduction trials at Air Products’ testing facilities or at your site
  • Existing milling system technical assessment/improvements
PolarFit cryogenic size reduction systems

PolarFit cryogenic size reduction systems—from individual components to turnkey solutions:

  • Nitrogen supply with control panels
  • A range of cryogenic cooling conveyors
  • Cryogenic tunnel freezers
  • Complete cryogenic grinding/milling system tailored to your needs

Some reasons our customers say they chose Air Products:

  • Over three decades of laboratory and plant experience in cryogenic grinding
  • Not tied to one mill manufacturer, enabling us to provide a range of options
  • Flexibility in trial facilities/process
  • A wide range of efficient cooling conveyors


An overview of cryogenic grinding solutionsPolarFit™ cryogenic grinding solutions

PolarFit™ cryogenic grinding solutions (3:06)

Effective & efficient grinding
particularly for heat sensitive or
tough-to-mill materials.

Cryogenic grinding/milling system configurations

Cryogenic grinding/milling system configurations

Learn about our PolarFit systems.

Ask the Expert … Have a question?

Send your question to our cryogenic specialists.


Air Products NV
T 02 255 28 95


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