About IMRO
IMRO Maschinenbau develops and manufactures machines and systems as well as the latest recycling processes with a focus on separation technology. The solutions are individually tailored to the requirements of the companies and enable efficient and sustainable recycling concepts.
Industry
Machine
Liebherr product
Starting Point
Successful recovery of valuable resources
Numerous waste products, production scrap, and other material flows contain valuable non‑ferrous metals like aluminum or copper. To reclaim these, highly specialised separation equipment is used. At the heart of the process is the NF separator: it applies eddy current technology to precisely separate non‑ferrous metals from mixed material streams and make them usable again.
Challenge
High speeds, extreme forces – a demanding rotor environment
In the NF separator, a fast‑spinning magnetic rotor produces the necessary pole‑change frequency. The pole changes and the resulting eddy currents in the non‑ferrous metals generate a repelling force that propels the particles out of the material flow. At speeds of up to 3,800 rpm, massive centrifugal forces act on the magnets and the structure. Traditional stainless‑steel housings tend to deform (become oval), causing imbalance, unstable machine performance, higher wear, and the need to replace bearings early. For modern recycling systems, this is neither efficient nor cost‑effective over time.
Solution
CFRP rotor winding: stable, precise, magnetically compatible
Our specially wound CFRP wrap surrounds the magnetic rotors, keeping the magnets safely in place even at the highest speeds. Carbon‑fiber reinforced plastic provides high strength with minimal deformation at thin wall thickness and does not interfere with the magnetic fields. The outcome is a perfectly round, lightweight, and long‑lasting rotor housing that delivers consistent, low‑vibration performance.
Application
More precision in IMRO’s eddy current separator
The CFRP‑wound magnetic rotor is employed in IMRO’s NF separators. With its stable rotor geometry, the gap to the outer fiberglass housing can be kept smaller – boosting the magnetic effect on the material. This allows for even more precise separation of the tiniest non‑ferrous metals and sustainably enhances the recycling yield.
Stable performance, greater yield, sustainable process – value for everyone
