At the Powtech trade fair in Nuremberg, Germany – Hall 4A, Stand 529 – Messer is exhibiting cryogenic grinding, composite separation and the production of powder for 3D printing.

Whether it’s used to economically recycle separately sorted composite materials, preserve the flavor of ground spices, or produce specific grain sizes in powders for 3D printing – cryogenic grinding offers many advantages. This is what Messer, the world’s largest privately held specialist for industrial gases, will present at Powtech in Nuremberg, Germany, on September 26–28, 2023. At Stand 4A-529 in Hall 4A, guests will be able to discover the use of liquid nitrogen and carbon dioxide for cold grinding as well as cryogenic equipment for product and mill cooling.

“Cold grinding with cryogenic liquid nitrogen or carbon dioxide makes it possible to achieve particularly fine grain sizes and a high throughput of ground material,” emphasizes Oliver Dietrich, a cold grinding expert at Messer. The topic is especially interesting for Additive Manufacturing: Cold grinding special thermoplastics for 3D printing produces powders with a specific particle size distribution, which are needed in processes such as selective laser sintering (SLS), for example.

Cold grinding is also an attractive option when manufacturing vegan foods: for cold-pressed oils, oil seeds or nuts are processed in presses. The press cake that remains behind in the press contains high-quality vegan proteins. Cold grinding can be used to extract them as fine flour for further processing. Oliver Dietrich: “The extremely low temperatures of the grinding process retain the product properties and preserve the nutritional quality.”

All of this can be experienced live at Messer’s technical center in Krefeld, Germany, where interested companies can test the possibilities and benefits of cryogenic grinding as it applies to their own production. Along with the production of grinding samples, manufacturing costs can be estimated under various production conditions and compared with other grinding processes.