If tramp metal is an occasional problem, then a stationary magnet is the right choice. Just suspend it over the conveyor or over the head pulley. When the magnet surface starts to fill up, swing the magnet away from the conveyor and cut the power (electromagnet) or use the convenient wiper arm (permanent magnet) to release the attracted metal.
If users need to separate large quantities of ferrous metal, self-cleaning magnets will do the job. Available in both electro and permanent magnet styles, these separators come equipped with a tough, vulcanized rubber belt with 1-in. cleats to continuously remove metal from the product stream (3-in. cleats are available for material recycling facilities). The magnet may be suspended either crossbelt (perpendicular to the product flow) or inline (parallel above the product flow).
For demanding applications such as concrete recycling or construction and demolition waste processing, the manufacturer has designed a severe-duty self-cleaning magnet. With a stainless steel cleated belt and heavy-duty drive package, this magnet is built to withstand tough conditions.
Dings Magnetic Group, 4740 W. Electric Ave., Milwaukee, WI 53219. Tel: 414-672-7830; Fax: 414-672-5354.