Goudsmit Unveils 10,000-Gauss Rotary Magnet Separator

Separator was specially developed for poorly flowing powders.

2 Min Read
Goudsmit rotary magnet separator
Goudsmit 10,000-gauss rotary magnet separatorImage courtesy of Goudsmit Magnetics

The recently developed 10,000-gauss rotating cleanflow magnet from Goudsmit Magnetics filters magnetic and paramagnetic particles out of poorly flowing, greasy powders in the food, pharma, and chemical industries. 

The magnet rotor is composed of seven strong magnet bars, equipped with Neodymium-iron-boron magnets, each with a diameter of 32 mm. This is 40% thicker than regular magnetic bars and used by the magnet manufacturer in the static version of the cleanflow.

The magnetic separator was developed in response to many customer requests. It is suitable for free-fall lines and captures both iron and AISI 304 and AISI 316 particles as small as 30 µm from cocoa or milk powder, for example.  An additional advantage is the higher capacity powder that the new cleanflow magnet type can process compared to the 8- or 12-rod magnet separator. The magnetic extractor is designed to be interchangeable one-to-one with existing rotary cleanflow systems.

Watch a video to see how it works


The powerful magnetic bars in the cleanflow separator filter metal particles and paramagnetic particles from fatty powders and granular products. The separator is available in three sizes, with the largest model suitable for product flows of up to 45 cu m/hr. The magnetic flux density of 10,000 gauss was measured on the contact surface of the bars. The maximum working and product temperature is 140°C; the minimum and maximum ambient temperature is -20°C to 40°C. 

The disadvantage of greasy (milk) powder is that this product does not flow well; the reason why the magnetic bars rotate in the product flow. This counteracts bridge formation and material accumulation and ensures optimal magnetic contact to capture metal contamination. The result is a high degree of separation and a clean product.


During the manual cleaning cycle, the operator removes the rotor from the housing and pulls the magnetic bars out of the extractor, after which the metal particles are loosened and can be disposed of. The company has also developed a special cleaner system, which allows easy and hygienic cleaning of the extractor.

Goudsmit Magnetics, The Netherlands, +31 (0)40-2213283 www.goudsmitmagnets.com


About the Author(s)

Powder Bulk Solids Staff

Established in 1983, Powder & Bulk Solids (PBS) serves industries that process, handle, and package dry particulate matter, including the food, chemical, and pharmaceutical markets.

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