Suspended Magnets

A suspended or overband electromagnet or permanent magnet is placed above a conveyor belt, where it attracts ferrous components like iron or cobalt. Ferromagnetic components consist of:

Co, Fe, Fe2O3 , FeOFe2O3, NiOFe2O3, CuOFe2O3, MgOFe2O3, MnBi, Ni, MnSb, MnOFe2O3, Y3Fe5O12, CrO2, MnAs, Gd, Dy, EuO

 

A small graphic can explain the purpose of the suspended magnet in such a way, that even a child could comprehend:

The electricity symbol means that this one is powered by it. You have permanent and electro magnets.

You'll get these magnets in different forms, all depending on your budget and your throughput. Let's start with the economy class under the suspended magnets, namely the permanent magnet.

Suspended permanent separator

This kind comes in many sizes and even has the possibility to clean itself. A self cleaning mechanism makes use of conveyor belts on the permanent magnet itself, through which it moves the components towards a reject belt. There are 2 big differences between the self-cleaning mechanisms. It can be sorted in-line and cross belt. In-line means that the particles are separated within the same line, e.g. the clean material drops right of the belt, whereas the ferrous particles are taken a bit further along the line where it is dropped. Here a graphic to help you understand the idea behind it:

Above you see a plate magnet with a conveyor belt, over which the ferrous material is transported and propelled in a separate container. This is an in-line self-cleaning mechanism.

Cross-band means that the conveyor band of the magnet is directed to a different angle. The ferrous components will be rejected and taken to a reject belt, that goes from the main line to a different location.

 

The big advantage over electro magnets is that it does not require power to operate, which makes it the economy class under the magnets (lower operating costs and a smaller investment). 

As the name of the suspended permanent magnet indicates, it permanently attracts ferrous objects as opposed to the electro magnet, which uses electricity to enhance the magnet strength.

Suspended electromagnetic separator

The suspended electromagnetic separator is more expensive because it uses more electricity and has a higher price tag. However, it's also a lot more powerful, which assures a higher throughput and therefore a bigger turnover. It has the same optional features as on the permament suspended magnet, like a self-cleaning mechanism (in-line and cross-band) with a reject belt, explosion-proof motors, speed switches, armored belts, various casings, turn buckles, adjustable sizes, dust covers and fine-tuned for your plant line.

Applications of the suspended magnetic separating machine

Mining, packaging industry, quarrying, glass, waste management, incineration, recycling, mineral processing, steel processing and timber.