Skip to main content

Metal Sorting

One machine is all you need – for any application!

From the beginning, REDWAVE has been the leader in XRF (X-ray Fluorescence) based sorting machines. Our worldwide customer base ranges from family owned shredder yards to multinational corporations, and each one has met their specific needs in nonferrous sorting with the REDWAVE XRF/C. But we are not just another equipment manufacturer. Our expertise in non-ferrous markets and ongoing relationships with our customer base has led to constant innovation in developing new sorting solutions based on customer requests.  As a global leader in plant solutions, we have designed and installed turnkey nonferrous sorting plants with input capacities of up to 25 tons per hour that continuously produce a furnace ready product. With over 100 XRF-machines operating and 20 years’ experience building plants REDWAVE is here to solve your nonferrous challenges, whether it is a single machine or a turnkey plant.

  • REDWAVE mate – plant control system to optimise efficiency automatically, thereby increasing revenue
  • Recognition of objects e.g. coins, wires and other things
  • Combination of object recognition, shape recognition, colour and elemental analysis (XRF)
  • Comprehensive new statistical database
  • ROI usually less than 1 to 2 years


(mix of non-ferrous metals)
  • Separation of ZORBA into ZEBRA (mix of heavy metals) and TWITCH (mix of aluminium)
  • Removal of PCB´s (printed circuit boards)
(mix of heavy non-ferrous metals)
  • Sorting of heavy metals into high purity products of sorted copper, brass, zinc, stainless steel, etc.
  • Separation of brass and bronze
  • Removal and purification of PCB´s (printed circuit boards)
  • Separation of coins
  • Separation of gold, silver, platinum, palladium and other precious metals
(mix of aluminium grades)
  • REDWAVE 3-step-sorting: sorting of TWITCH by content of copper and zinc in the aluminium stream
  • Removal of PCB´s (printed circuit boards)
  • Removal of remaining heavy metal impurities
(eddy current drop, mostly stainless steel)
  • Removal of non-metals, ICW (insulated copper wire) and heavy metals to produce a high purity stainless steel product
  • Sorting of stainless steel alloys: 304 from 316/17 from 2xx from 4xx
(incinerated bottom ash)
  • Separation of heavy metals from aluminium
  • Sorting of heavy metals into high purity products of sorted copper, brass, zinc, stainless steel, etc.
  • Separation of brass and bronze
  • Separation of coins
  • Separation of gold, silver, platinum, palladium and other precious metals
(copper scrap)
  • Removal of impurities such as brass, bronze, and other metal types
  • Removal of specific unwanted elements such as tin, silver, nickel, etc.

Comparison of non-ferrous sorting technologies

Non-ferrous sorting taskREDWAVE


Belt type XRF
coarse fraction
Zorba into Twitch and heaviesExcellentExcellentExcellentNoGoodNo
Twitch into sorted chemistriesGoodGoodNoNoGoodNo
Heavies into     
   >  Mixed red metalsExcellentNoNoNoGoodAverage
   >  Mixed white metalsExcellentNoNoNoGoodAverage
   >  Clean zincExcellentNoNoNoGoodNo
   >  Clean copperExcellentNoNoNoGoodAverage
   >  Clean brassExcellentNoNoNoGoodAverage
   >  Clean stainless steelExcellentNoNoNoGoodNo
Zurik into clean stainless steelExcellentNoNoGoodGoodNo
Stainless steel e.g. in 316 and 304ExcellentNoNoNoGoodNo

The performance of the REDWAVE XRF/C technology is excellent; it was the absolutely right decision to choose REDWAVE for our metal recycling plant. REDWAVE is a very experienced partner! CFO has been looking for solutions to separate metals for several years. For us, REDWAVE was the only provider who offered a complete solution for our process and that was the reason why we chose REDWAVE. With XRF technology, it is possible to break new ground and increase the value of scrap metals in Europe. It was a pleasure to work with the REDWAVE team. Their knowledge and availability for our project were very important.

Liliana Ferreira Santos, CFO & Filhos, SA
Turning your individual projects into reality
Providing the solutions for metal industry demands

Plant solutions for metal

With more than 20 years of experience in plant building, REDWAVE has the know-how to supply not only the key equipment of the sorting plant, i.e. the sorting machinery, but also to supply and install the whole plant.

Turn-key design, manufacturing and installation – all provided with the same level of quality - from one supplier.

More than 100 REDWAVE XRF sorting machines worldwide in use:
and many more...


Try the machines yourself

The REDWAVE test and innovation centre, newly built in 2020, was not only built for continuous improvement and advancement in research and development; primarily it is there for our customers. Our test centre is always available for sorting tests.

Would you like to test sorting applications for your company? Then please get in touch with your personal contact in Sales or at


Our metal recycling experts:

Thomas Diesenreiter

Sales Management Metal

+43 3117 25152 2230

+43 664 80 155 2230

Julian Tauterer

Sales Engineer

+43 3117 25152 2640

+43 664 801552640

North and South America

Grayson Rutherford

Sales Engineer

+1 678 200 6864

Jason Silvey

Sales Engineer

+1 470 699 1667