Vast resources for obtaining secondary raw materials

Recovering reusable materials from discarded electronic devices

The amount of electronic waste is growing by the year. Millions of tons are produced worldwide annually, and the number of discarded devices is increasing all the time. Mobile phones, televisions, computers and washing machines contain valuable materials that are in strong demand.

When processing electrical and electronic scrap, the goal is to obtain secondary raw materials that are as pure and marketable as possible and contain zero harmful substances. At the start of the process, the waste materials need to be broken down. BHS recycling technology is perfect for the job.

BHS-Sonthofen supplies individual machines for special process steps and complete systems for the recycling of electronic waste, which ranges from small household appliances to entire photovoltaic systems.

Applications at a glance:

  • Small household appliances
  • Large household appliances
  • Circuit boards
  • Photovoltaic systems
  • Cables
  • Li-ion batteries

Small household appliances

Small household appliances

This includes vacuum cleaners, kitchen appliances, hair clippers/dryers, irons, toasters, grills and fryers. Due to the wide variety of appliances that exist, it is necessary to pre-shred them in our RAPAX, which is specifically designed to handle such tough tasks. As soon as the feed material has been reduced to the desired size, it exits the machine through the bottom. The rotor shredder (type RS) performs the next step of disaggregating the composites. Finally, the rotor impact mill (type RPMV) finely processes and sorts the material into pure fractions. The rotary shear (type VR) and universal shredder (type NGU) are used for processing material substreams.

Large household appliances

Large household appliances

You need a powerful machine to handle an entire dishwasher, washing machine or stove. Our RAPAX is suited for the tearing pre-shredding of especially large or bulky materials. The rotor shredder (type RS) then disaggregates composite materials to help facilitate the subsequent recycling of reusable materials.



There are many types of cable waste, ranging from wires to heavy ground cables that come in a wide variety of diameters and configurations. Every cable contains electrically conductive materials (copper, aluminum, etc.), a plastic sheath, and, in some cases, lead, textiles and steel. Our BHS solutions are also able to handle many different types of cables.

Coarse shredding is performed by the rotary shear (type VR), which also cuts thick cable strands down to lengths of approx. 100 mm. The BHS universal shredder (type NGU) shreds the cables down to even smaller pieces of 10 to 20 mm. This is also the step in which composite materials are largely broken down. The rotor impact mill (type RPMX) is the perfect choice for the third (optional) stage in the shredding process. These machines are able to further disaggregate and granulate fine cables, in particular (telephone wires, for example).

Circuit boards

Circuit boards

Printed circuit boards consist of an electrical insulator (for example, plastic or hard paper) with conductive connections attached to it.

The rotary shear (type VR), a low-speed, high-torque twin-shaft crusher, is perfect for the job of pre-shredding such electrical components. The universal shredder (type NGU) is the right tool for phase two of the shredding process: The high-speed, single-shaft crusher cuts the material to the desired particle size. The rotor impact mill (type RPMX) is an excellent choice for the further separation of composites.

Innovative technologies from BHS for environmentally friendly recycling

Every new technology introduces new challenges. BHS is constantly developing innovative methods to overcome them.  

Lithium-ion batteries

Lithium-ion batteries

Batteries and accumulators must first be discharged before they can be shredded in a safe and environmentally friendly manner. We use the rotary shear (type VR) and our universal shredder (type NGU) to crush and shred such devices. If the batteries have not been treated with a thermal process at high temperatures, sparks in the machine can cause the electrolyte to catch fire. In order to eliminate this risk, both machines feature a gas-tight design and operate in a nitrogen atmosphere.

Photovoltaic systems

Photovoltaic systems

When solar panels reach the end of their service life, there are a lot of raw materials that can be recovered from them. The panels are made out of glass, aluminum, copper, precious metals and polymers. 

To recycle these materials, the photovoltaic modules must first pass through a series of shredders. In step one, the RAPAX reduces the volume of large, bulky input material. In step two, coarse shredding is performed by the rotary shear (type VR).

Processing of copper armatures and electric motors


Processing of copper armatures and electric motors

Optimized recovery of copper from motor armatures and electric motors – also known as meatballs – at a customer facility in France thanks to selective shredding using the BHS rotor shredder of type RS 2018. The fed copper armatures and electric motors are first shredded and separated using the RS unit. They can then be separated into pure fractions (e.g., copper, iron, etc.).

Machine portfolio


Powerful, robust pre-shredder for intelligent, flexible pre-shredding of a wide variety of valuable and waste materials.

Rotary shear (VR)

Versatile, heavy-duty crusher for tough shredding tasks

Universal Shredder (NGU)

Continuous high-performance crusher for all cutting-related applications

Rotorshredder (RS)

The Rotorshredder (RS) can do it all! Optimally shreds, separates and disaggregates valuable and residual metaliferous waste materials.

Rotor impact mill (RPMV & RPMX)

Ball shaper operating based on unique crushing principle

Brochure of the "Recycling Technology" business unit
"Fine treatment for optimal metal recovery" application flyer

Tests give certainty

Which technical solution is the right one for your recycling process? Don’t leave anything to chance. Our team of specialists will test your material at our test center and develop a solution tailored to your specific needs.

E-Waste World | Metal Recycling | Battery Recycling - Conference & Expo 2024

06/26/2024 - 06/27/2024 | Frankfurt am Main (Germany)

ICBR 2024 - International Congress for Battery Recycling

09/10/2024 - 09/12/2024 | Basel (Switzerland)

IFAT India 2024

10/17/2024 - 10/19/2024 | Delhi (India)

Technical articles in the media

Customized recovery | Recovery of metallic fines from ASR

February 2023

The recovery of metallic fines from ASR requires a customized approach. Auto shredder residue (ASR), fines from shredded electrical and electronic equipment and waste incinerator bottom ash all have one thing in common: They contain valuable metals that are worth recovering. Therefore, processing these fine materials is of high importance.

recycling today scrap recycling | Winter 2023 | Supplement to recycling today

Recuperación de metales valiosos: alto rendimiento para un procesamiento fino mejorado

August 2022

BHS optimiza la calidad de su molino de impacto de rotor con un nuevo diseno de martillo. AMBISORT Circular ofrece siempre procesos novedosos y de alto valor añadido para el sector del reciclaje. Un destacado ejemplo es la recuperación de valiosos concentrados de metales a partir de varios composites y desechos industriales, que sin duda es todo un desafío técnico.

RETEMA 07/08-2022

BHS fine treatment process recovers valuable metals from residual materials

July 2022

There is currently no way around the issue of resource saving but how can valuable materials can be recycled in the best possible way? Metals in particular are considered important scarce raw materials whose recovery is essential for the sustainable use of resources. BHS-Sonthofen offers an effective solution for metalliferous residues with a size of up to 25 mm.

recovery 04-2022

Recycling company in United Kingdom processes ASR fractions and electronic scrap using the BHS Rotorshredder

February 2022

British recycling specialists Recycling Lives commissioned a recycling plant that was planned and implemented by BHS-Sonthofen. The plant is designed to handle a variety of materials such as automotive shredder residue (ASR), electric and electronic scrap (WEEE), as well as so-called "meatballs" (electric motors and motor armatures). The process developed together with the company is based on a profitablity analysis and ensures marketable end products.


New universal pre-shredder

October 2021

BHS-Sonthofen's new RAPAX combines design and functionality in one powerful pre-shredder. Versatile, sturdy and easy to maintain, this machine is perfectly suited for processing various metal fractions, commercial waste, industrial waste and construction waste. The flexible smart control system also ensures efficient pre-shredding in every running direction.

recovery 05-2021

Satisfied customers worldwide

Find a sales representative

Find your personal contact person on site. We are there for you worldwide.

Find a sales representative

Find your personal contact person on site. We are there for you worldwide.