Goudsmit develops 10,000 gauss rotary magnet separator
Image: Goudsmit Magnetics
The recently developed 10,000 gauss rotating cleanflow magnet from Waalre-based 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 7 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 also used by the magnet manufacturer -the only one in the market 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. See how it works: https://youtu.be/xs8Lzdp8BAQ
Capacities
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 3 sizes of which the
largest model is suitable for product flows of up to 45m3/hour. 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: -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.
Cleaning
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.
