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

Particle size reduction with cryogenic grinding/milling with liquid nitrogen

Size reduction technical articles

The case for nitrogen inerting of flammable and combustible liquids
Protection against gas, oxygen and ignition coming together unexpectedly, explosively.
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Nitrogen inerting to prevent combustible dust explosions
Using inert gas systems for combustible dust handling can prevent an explosion before it starts by removing the oxidant required for an explosion.
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Should you use Nitrogen for your size reduction operation?
Find out why liquid nitrogen has been used for over 50 years for cooling size reduction processes to grind more effectively and efficiently.
Download PDF (239 KB)

The case for nitrogen inerting of flammable and combustible liquids
Protection against gas, oxygen and ignition coming together unexpectedly, explosively.
Download PDF (156 KB)

Prevent combustible dust explosions with N2 inerting
Inerting for combustible dust and the economics of explosion prevention.
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Practical low-temperature size reduction
Cryogenic grinding uses liquid nitrogen and offers numerous features attractive to processors trying to grind challenging materials.
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Cryogenic grinding: a multitasking marvel
From spices to thermosplastics, cryogenic size reduction can provide benefits to a variety of industries.
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A cool approach to size reduction
Cryogenic grinding solutions can be used to produce fine particles in multiple applications.
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Use nitrogen safely
Understanding the potential hazards and taking the proper precautions will allow you to reap such benefits as improved product quality and enhanced process safety.
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Size reduction literature

PolarFit Cryogenic Grinding Solutions for Efficient Size Reduction
Our PolarFit size reduction systems use the cooling power of liquid nitrogen to remove heat produced in the grinding process, allowing you to achieve higher yield of particles in your target range, more uniform particle size distribution, higher production rates, Improved product quality and improved process safety due to the nitrogen inertness.
Download PDF (3.4 MB)

PolarFit Cooling Conveyor
Choosing the right cooling conveyor for the job is critical to your cryogenics operation. The correct size and type of conveyor translates into a more efficient process. And a more efficient process saves you money. We can help make your choice easier—Air Products offers a selection of cooling conveyors backed by our experience to maximize the performance of your cryogenic grinding system.
Download PDF (273 KB)

PolarFit Ultra-Fine-Grinding Mill 
Our mill can help you meet product specifications previously considered impossible. Although every material is different, in some cases our mill can produce particles as small as 10 microns! 
Download PDF (328 KB)

Videos – Cryogenic grinding or milling with liquid nitrogen

An overview of cryogenic grinding solutions
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The PolarFit Ultra-Fine-Grinding Mill
An overview of our mill.
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Interview with Alan Barton, CEO, Lehigh Technologies
Lehigh Technologies uses cryogenic grinding to produce micron-scale powders. Alan Barton, CEO, talks about the benefits of our PolarFit ultra-fine-grinding mill.
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Cryogenic grinding/milling system configurations

Cryogenic grinding/milling system configurations

Learn about our PolarFit systems.

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.

Ask the Expert … Have a question?

Send your question to our cryogenic specialists.


Air Products Slovakia, s.r.o.
0800 100 700


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