Ash from waste incineration

Getting the best out of the rest

After incineration, the incombustible components of the waste and the inert materials produced in the process (those which are no longer reactive) remain. Together, these are referred to as ash or slag.

Germany produces about 78 kg of slag per capita every year. Slag is the predominant waste material after the incineration of household waste, and on average it contains 1-3% non-ferrous metals and 5-15% ferrous scrap, while the rest consists of a mixture of minerals, glass, ceramics and other components.



BHS systems technology ensures maximum efficiency in breaking up agglomerated materials and in the subsequent refining of metallic raw materials. Depending on the application and objectives, various BHS machines are used:

Trials at the BHS technical center

The selection mainly depends on the maximum size of the feed materials. To arrive at the optimal machine configuration, we will perform trials at the BHS technical center together with you and your unique feed material. Register for a trial here!

Video "Treatment of incinerator bottom ash"

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Brochure "Impact Crusher & Impact Mill (PB & PM)" (PDF / 1.6 MB)
Brochure "Impact Crusher & Impact Mill (PB & PM)"

Product brochure for the Impact Crusher (PB) & Impact Mill (PM)

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Brochure "Rotor centrifugal crusher (RSMX)" (PDF / 2.2 MB)
Brochure "Rotor centrifugal crusher (RSMX)"

Product brochure for rotor centrifugal crusher (RSMX)

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Brochure "Rotorshredder (RS)" (PDF / 1.6 MB)
Brochure "Rotorshredder (RS)"

Product brochure for the Rotoshredder (RS)

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Brochure “Rotary impact mill for recycling (RPMV & RPMX)” (PDF / 2.6 MB)
Brochure “Rotary impact mill for recycling (RPMV & RPMX)”

Product brochure for rotary impact mill (RPMV & RPMX) for recycling applications

Size: 2.6 MB

Advantages of recycling technology from BHS

  • Maximum yield of non-ferrous metals
  • Maximum purity of non-ferrous metals
  • High yield of saleable products
  • Customer-specific machine configuration
  • Turnkey system planning

BHS recycling technical center

Link to tests at BHS technical center

Technical article

Recycling of meatballs even more efficient

4|2019 (August)
August 2019
PDF (233 KB)
Recycling of meatballs even more efficient

BHS-Sonthofen has developed a new procedure for processing meatballs in order to increase the amount of copper recovered. Electric motors and motor armatures represent a small fraction of waste from incineration or large shredders, and it is difficult to cleanly separate them by type. ...

Size: 233 KB

Non-ferrous metals in incinerator bottom ash are turned into valuable resources

4 | 2017
July 2017
PDF (1.2 MB)
Non-ferrous metals in incinerator bottom ash are turned into valuable resources

BHS-Sonthofen planned and implemented a turnkey plant for the processing and refinement of metals derived from waste incineration plant slag and other metal-bearing fractions. Recycling machines from BHS are core components of both processing lines, as they allow for efficient shredding. This order from Switzerland is the largest ever for the Recycling Technology division.

Size: 1.2 MB
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