CRYOGENIC GRINDING CENTER
A dedicated cryogenic processing center and cryogenic grinding center was built at the Schöneck site for the area of cryogenic grinding for many innovative products such as 3D printer powder, aerospace powder, cosmetics and organic products. This is equipped with a vacuum ring main connected to a large liquid nitrogen tank fitted with an evaporator to produce cold nitrogen gas.
Up to 10 different systems can be connected in this cryogenic processing center. The inventory of cryogenic processing plants ranges from counter-rotating pin mills, wide chamber mills, cutting mills, Fitzmill systems, hammer mills, classifying plants, screening plants, cryogenic spray solidification and cryogenic mixing plants.
With a total volume of approx. 5,000 tons per year, we already process large quantities under cryogenic conditions. In addition to the cryogenic grinding center, we have a wide variety of large-scale cryogenic plants throughout the site, on which corresponding cryogenic processing can be carried out. Here, the products are cooled down using both whirling screw coolers and nitrogen baths in order to ensure optimal preparation for further processing.
In accordance with the philosophy of A. Ebbecke Verfahrenstechnik AG, the most diverse plant makes are used in order to offer our customers the widest possible range of different makes and processes that are particularly suitable for their applications. Ask us if you need services in the field of cryogenic grinding or if you would like to use this area as an outsourcing component.
In the field of cryogenic micronization, we have Hosokawa Alpine type AFG 200 and AFG 400 opposed jet mills, impact grinding systems with stator-rotor and rotor-rotor systems made by Netzsch Condux Type CUM 300, and Pallmann and Hosokawa Alpine Type CW 250 wide-chamber mills , UPZ 315, UPZ 160, Gotic and Fitzmill mills, Jaeckering and Hosokawa Alpine classifier grinding systems and hammer mills, granulators and classifier systems from Netzsch Condux and Hosokawa Alpine, as well as the tried-and-tested Ebbecke ESM 170 type spiral jet milling technology, ESM 450 and ESM 500.
Especially the innovative products from the areas of 3D printer powder, battery chemicals, aviation, aerospace and defense require grain spectra between 20 and 250 μm or between 50 and 180 μm. The sifting can take place via air classifiers, screening systems or ultrasonic fractionation. Cryogenic fine grinding processes with counter-rotating impact mills and jet mills are essentially used to produce innovative fine powders.
In order to ensure the removal of the often disruptive fines, classification is required after the grinding process.
For this purpose, Ebbecke Verfahrenstechnik has combination systems that ensure grinding (below the upper particle size range) and sifting in the downstream area. For this purpose, fine classifiers from Hosokawa Alpine and Netzsch Condux as well as in-house developments from A. Ebbecke Verfahrenstechnik AG and screening plants from Allgaier and J. Engelsmann and others are used. deployed.
The production of fine powders often requires the use of different process steps. In addition to cryogenic and non-cryogenic mixing, cryogenic grinding and sifting, packaging in special containers, Ebbecke Verfahrenstechnik also guarantees packaging, warehousing and logistics worldwide.
Organic products in particular, but also a large number of inorganic products that are required in high fineness ranges, are prone to melting on the surface due to the large surface area and thus destroying the desired grain structures. The result is smearing of the products in the processing plant with clogging of the grinding aggregates. Mention should be made here of oily and organic products as well as modern materials of 3D printing technology such as TPU, EVA, PEEK, as well as polyamide and others.
… that we can regulate the dryness of your powders and granules?
With the different drying processes like vacuum or spray drying, we can extract moisture from surfaces, from capillaries and crystals. We can also dry food hygienically using infrared or microwave technology.
Find out more about drying at Ebbecke …