Freeze Granulation: A novel technique for low-loss Mn-Zn ferrites

Vasiliki Tsakaloudi, George Kogias, Vassilios Zaspalis Laboratory of Inorganic Materials, Chemical Process Engineering Research Institute,Centre for Research and Technology-Hellas, 57001 Thermi-Thessaloniki, Greece Freeze Granulation – A novel technique for low-loss Mn-Zn ferrites In the present study the freeze granulation technique is applied in the manufacturing process of Mn-Zn power ferrites. The powders are prepared by… Continue reading Freeze Granulation: A novel technique for low-loss Mn-Zn ferrites

Spray-freezing and freeze drying

Spray-freezing and freeze drying – Freeze Granulation PowderPro AB develop, manufacture, market and sell equipment and know-how for Freeze Granulation, spray freezing and subsequent freeze drying (lyophilization or cryodesiccation). Freeze Granulation was developed in late 1980s at Swedish Ceramic Institute in Göteborg and it is also a development of Spray Freeze Drying (SFD) and Spray Freezing into Liquid (SFL). Spray cooling or rather called spray freezing is… Continue reading Spray-freezing and freeze drying

Freeze drying

Spray Freeze Drying for Soft Granules by Freeze Granulation Freeze drying is an important processing step in Freeze Granulation where we sublimate the solvent (ice if water) from our spray frozen (spray freezed) granules, resulting in a free-flowing and dust-free granulated material suitable for pressing of components. Please contact us for more information and a test-granulation of your powder system.  

Spray-freezing and freeze drying

Spray-freezing and freeze drying – Freeze Granulation PowderPro AB develop, manufacture, market and sell equipment and know-how for Freeze Granulation, spray freezing and subsequent freeze drying (lyophilization or cryodesiccation). Freeze Granulation was developed in late 1980s at Swedish Ceramic Institute in Göteborg and it is also a development of Spray Freeze Drying (SFD) and Spray Freezing into Liquid (SFL). Spray cooling or rather called spray freezing is… Continue reading Spray-freezing and freeze drying

Freeze Granulation of ceramic powders

Freeze Granulation offers the possibility to produce very soft, spherical granules which show an excellent flowability. The granules can be compressed to compacts of high homogeneity and they are completely redispersable. Freeze Granulation is a granulation technique which combines the advantages of spray drying and freeze drying. Hard granules are prevented by this technique excluding… Continue reading Freeze Granulation of ceramic powders

Granule homogeneity

Migration and segregation of the constituents that is common in other granulating processes such as spray drying is avoided in Freeze Granulation. By instant freezing of small droplets critical ice crystal growth is avoided. The freeze drying where the liquid medium is sublimated ensures homogeneity preservation, limited oxidation and soft bonds within the granules. This provides… Continue reading Granule homogeneity

Interested in test-granulation of your material?

If you would like to test-granulate your powders or chemicals using Freeze Granulation, please contact us for details. You send your material and binders to us, we make the test-granulation using freeze granulation and then send the granulated material (granulaes) back to you for your evaluation and testing. Freeze granulation is considered to be a natural tool in most… Continue reading Interested in test-granulation of your material?