Permanent Drums Separators are designed for the continuous extraction of ferrous materials from a product being fed uniformly on to the face of the drum. As material is fed onto the drum, ferrous materials are extracted and are firmly held to the drum face until they move away from the magnets influence and discharge, leaving any non-ferrous materials to free fall.

Permanent Drums have a 180 degree stationary magnet system within a revolving cover. The magnet system is constructed using fully stabilised strontium ferrite permanent magnets. The magnets are mounted on to heavy-duty back plates, to optimise the magnetic strength directed at the product stream. This not only enhances the Drums performance but also reduces the magnetic fields in the shaft and bearings, helping to extend their service life.

Unlike Electro-magnetic Drum Separators, the magnet systems used in Permanent Drums do not require a power source and their magnetic intensity will also last indefinitely.

High Intensity Rare Earth Drums

For applications that require a much greater level of extraction, Permanent Drum Magnets can be constructed using the highest grade of Neodymium Iron Boron magnets. High Intensity Rare Earth Drums are capable of extracting fine ferromagnetic and paramagnetic materials, which may not be extracted using a standard Permanent Drum. Rare Earth Drums are most often fitted into totally enclosed housings described in more detail below.

Totally Enclosed Permanent Drums

In applications where product needs to be kept from external contamination or where dusty product must be contained from escaping into the working environment, Permanent Drums can be supplied with totally enclosed housings.

Housings can be manufactured in robust mild steel or stainless steel. Inspection covers, aspirators and diverter plates are provided as standard.

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