Advantages of electromagnet MB E

Automatic cleaning without the interruption of the material flow

Main shell from 8 mm thick wear resistant manganese steel

Bolted 8 mm thick wear covers for easy replacement

Main supply: 415 V (suitable also for 400 and 380 V supply modes)

Switching off power to deactivate the magnetic field (allowing for easy maintenance)

Adjustable position of the magnet core

Electromagnetic drum MB E

Electromagnetic drum is a device for automatic and permanent removal of magnetic iron metals from inert materials. In case of highly abrasive materials or if there are present sharp objects in the material, the magnetic drum can be a suitable substitution for e. g. an overband magnet. The electro drums have no dead spots and their magnetic attractive force is stronger than a permanent design. That is why the electromagnetic drums are preferable for the separation of larger sized and heavier ferrous metals and are used above all for cleaning shredded scrap and cars, incineration bottom ash, foundry residues etc. Besides, when there is a high material layer, high magnetic forces are needed to extract the ferrous metal from the non-metallic material - and the electro drums are able to cope with this task. And for applications where the magnetic drum requires switching off, the only option is the electro magnet, where the magnetic field is easily switched on and off.

Benefits for the use of separator

Final material without iron contamination
Protection of production equipment
Smooth production operation
Automatic cleaning without interruption of the material flow
Elimination of operator errors

Detailed description

Separator design

The electro drum magnet has stationary electromagnetic coils positioned inside a non-magnetic, commonly manganese steel shell, fitted with welded stainless-steel wiper bars. The shell rotates around the stationary electromagnetic coil at a speed determined by the volume of processed material.

Transformer rectifier

Transformer rectifier provides power to the magnet at the correct Amps, depending on magnet design, ambient temperature and input voltage.

Transformer rectifier design

Fully welded steel enclosure to IP 65
Oil level gauge fitted to front of tank
Transformer: double wound transformer to BS EN 60076
Rectifier according to BS 4417 ABCD
Protection: diode protection with fast acting semi-conductor fuses

Application modes

Material can be fed onto the drum at one of three different points depending on process configuration:

The material is fed onto the top of the electro drum. Magnetic material is attracted and held to the drum shell before being discharged beneath the drum. This kind of feeding is ideal for the application of MB E RADIAL.
The material is fed onto to the centre of the electro drum. Attracted magnetic material is discharged opposite to the in feed. MB E AXIAL as well as MB E RADIAL can be applied.
The material is fed beneath the electro drum. Magnetic material is captured and held to the drum shell and then carried up and discharged over the top of the drum. This kind of feeding is ideal for the application of MB E AXIAL.

In all three configurations, non-magnetic materials will free-fall forward following their normal trajectory.

Model family

MB E AXIAL

Several magnetic poles aligned parallely to the axis
Continuous high field strength at the separation zone
Even cover wear
High-intensity primary coil for the concentration of the maximum flux at the point of extraction
Lower intensity secondary coil for the transport of the ferrous material to the point of discharge
Ducted coils extend the coil life
Heavy duty design
Platewheel is bolted to a robust drive ring
Extensive optional equipment (spillage rings, base frame, geared motor, chain drive, split platewheel)

DETAIL

MB E AXIAL is set with several magnetic poles aligned parallely to the axis of the drum. The first pole is extremely strong and attracts the incoming material, the other poles are used to retain the ferrous particles on the drum surface before the ferrous metals is discharged. MB E AXIAL drums are designed to allow extracted magnetic materials to flip (because of different polarity) over the face of the drum to release any non-metallic materials that may be caught between the ferrous material and the magnet. This kind of electromagnetic drum is used in applications such as municipal refuse and automobile fragmentiser plants (in order to achieve the best possible ferrous purity). Non-magnetic materials are unaffected and flow under a normal trajectory.

MB E RADIAL

Several poles are arranged radially over the width of the drum
Electromagnetic coils concentrate maximum flux at the point of extraction
Extension pole arranges for the discharge
High processing capacity
Platewheel is bolted to a robust drive ring
Extensive optional equipment (spillage rings, base frame, geared motor, chain drive, split platewheel)

DETAIL

MB E RADIAL is set with radial pole (all coils have the same polarity and are placed next to each other, giving a continuous radial polarity over the entire width of the drum). The strong magnetic field attracts the magnetically susceptible materials to the rotating shell surface of the drum. The revolving shell transports the magnetic particles by means of an extension pole out of the magnetic field where they are discharged into a collection area or onto a receiving conveyor. Non-magnetic materials are unaffected and flow under a normal trajectory.

Which industrial branches can the electro magnetic drum be use of in?

Electromagnetic drums offered by SOLLAU are made in co-operation with a renowned European producer in order to be used in difficult and arduous environments including automobile and vehicle fragmentation plants, household waste incineration plants, household refuse recycling operations, steelworks recovering steel from slag etc.