Ash from waste incineration

Recovering the best of the rest

Ash from waste incineration plants consists of sintered combustion products, mineral components, metal scrap and other unburnt materials.

For the treatment of incinerator bottom ash, either the original ash in its non-pretreated form can be used as the input material, or the sorted but contaminated metal fraction. BHS plant technology makes it possible in both cases to recover the ferrous and non-ferrous metals present and separate them into desired metal fractions with a high degree of purity. Using BHS crushing machines, the metals are selectively separated, freed from adhesions, dry cleaned and partially shaped into balls. This makes it possible to sort the different cleaned ferrous and non-ferrous metal fractions reliably and is an important prerequisite for marketing them attractively.

Depending on the application and specific goals, different BHS machines are used:

The machines are primarily selected on the basis of the maximum particle sizes in the input material. Tests can be carried out in our technical center to facilitate the final selection and design of the suitable machine type.

Treatment of presorted but contaminated ferrous scrap from waste incineration plants

Ferrous fraction before treatment ...
Ash with ferrous fraction before treatment ...
... and after treatment with the BHS Rotorshredder (type RS)
... and ash with ferrous fraction after treatment with the BHS Rotorshredder

Treatment of a presorted non-ferrous fraction from waste incineration plants

Non-ferrous fraction before treatment ...
Ash with non-ferrous fraction before treatment
... and after treatment with the BHS rotor impact mill (type RPMV)
Ash with non-ferrous fraction after treatment with the BHS rotor impact mill

Subsequent classification of the treated non-ferrous fraction into > 3.0 mm (left) and < 3.0 mm (right). The larger fraction contains the metals, while the remaining fraction consists of the mineral components.

Treated non-ferrous fraction > 3 mm
Treated non-ferrous fraction larger than 3 mm
Treated non-ferrous fraction < 3 mm
Treated non-ferrous fraction smaller than 3 mm

Video "Treatment of incinerator bottom ash"

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Downloads

Brochure "Rotor centrifugal crusher (RSMX)" (PDF / 3.3 MB)
Brochure "Rotor centrifugal crusher (RSMX)"

Product brochure for rotor centrifugal crusher (RSMX)

Size: 3.3 MB
Brochure "Rotorshredder (RS)" (PDF / 1.6 MB)
Brochure "Rotorshredder (RS)"

Product brochure for Rotorshredder (RS)

Size: 1.6 MB
“Rotary impact mill for recycling (RPMV & RPMX)” brochure (PDF / 2.6 MB)
“Rotary impact mill for recycling (RPMV & RPMX)” brochure

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

Size: 2.6 MB

Advantages of BHS recycling technology

  • Reliable recovery of ferrous and non-ferrous metals
  • Dry mechanical treatment
  • High throughput rates
  • Well-proven technology

BHS recycling technical center

Link to tests at BHS technical center
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