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Eriez' P-Rex Scrap Drum provides solution to meatball problems

10 May 2011

Eriez Magnetics Europe have addressed scrap processor and steel mill problems caused by electric motors and meatballs in shredder streams with the launch of the super strangth P-Rex Permanent Magnet Scrap Drum.

With the launch of this new Separation System Eriez can minimise meatball hassles and maximise revenue opportunities while reducing the need for hand sorting. The P-Rex is a simple mechanical Metal Separator with no electricity requirements and low maintenance.

Meatballs are electric motors or armatures consisting of a spherical steel shell with copper windings inside, which are usually removed using large Electro Magnetic Drums or by hand picking from the waste stream. When drum magnets don’t operate at peak performance, large sphere-shaped objects like meatballs can be near impossible to capture. Fragments of electric motors, alternators and other items containing copper, aluminium and steel are missed and money is lost. The new P-Rex Scrap Drum can solve this problem.

With todays electromagnetic drum magnets, a steel core is used to project the magnetic field. These cores generate a limited magnetic force at the drum edge because the electric coil that is wound around the core takes valuable space across the width of the drum, resulting in weak zones at the edges. These weak zones can amount to 20 percent or more of the surface of the drum.  Because the P-Rex is a permanent magnet, it extends to the edge of the drum. That means wider and more efficient separation. Wider separation means greater profits through greater recovery.

A further benefit of the P-Rex Drum having permanent magnets refers to temperature.  Electro Magnetic Drums consume power and heat up when in use. The higher the temperature the greater the loss of magnetic strength and in summer and hot climates this can be a problem.  P-Rex’s permanent magnets are permanent, they maintain their strength. P-Rex lasts forever, uses no electricity and is very strong with an attractive force that surpasses the largest and strongest electro drums on the market today. When comparing P-Rex Drums to Electro Drums, P-Rex outperforms them by more than 20 percent during both hot and cold conditions.

Carlton Hicks, Sales Manager – Recycling commented, “Having the P-Rex as part of the Eriez Recycling product range has increased the Metal Separation capabilities of heavy ferrous metal to levels that have never been seen before.  It enables better meatball recovery than we thought possible and will bring more profits to many scrap recycling operations.”

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