Recycling technology

Processing of reclaimed asphalt (RAP) is an economic imperative for saving natural ressources. It is equally important to obtain good prices for the mixed goods by using recycled material.

Benninghoven is your competent partner offering a broad spectrum of services in the "hot" and "cold" processing technology providing highest mix quality. Recycling components are also used to retrofit existing plants, always adapted and integrated according to individual customer demands.

The Closed Substance Cycle Waste Management Act and common sense force us to recycle the valuable raw material "asphalt" to the highest possible amount.The highest possible addition of RAP depends mainly on its grading curve. It is therefore important that the grading curve of the RAP is as far as possible approximated to the desired grading curve of the finished product. This result cannot be achieved with normal crushing plants, since this technology produces too many fines and sand to achieve the proper granulation.

Cold Recycling

Middle ring dosing system

  • Up to 25 % RAP material dosing possible
  • Solution for stationary but also in particular for mobile asphalt mixing plants (MBA)
  • Easy to retrofit to existing plants from all manufacturers
  • Gentle heating of the material in the dryer drum

Dosing system into the mixer

  • Up to 30 % RAP material dosing possible
  • Easy to retrofit to existing plants from all manufacturers
  • Dosing via belt scales
  • RAP material is fed directly into the mixer via an inclined conveyor or RAP elevator
  • The RAP elevator is a space-saving alternative to the inclined conveyor

Multivariable dosing system

  • Up to 40 % RAP material dosing possible
  • Smooth, sequential feeding to the mixer
  • This prevents steam hammering during steam expansion
  • Material- and component-friendly
  • Patented System (European Patent EP 2554746B1)
  • Extremely precise dosing thanks to high-precision weighing technology
  • Highest possible feed rates in cold recycling
  • Possibility of dosing for all non-bonded bulk materials - e.g. Trinidad, rubber granules etc.

Hot Recycling

Parallel drum

  • Up to 70 % RAP material dosing possible
  • Parallel-flow drum system
  • Proven solution for RAP hot feed systems

Recycling drum in counterflow with hot gas generator

  • Up to 90% + X addition of recycling material possible
  • Highest possible feed rates of RAP material
  • Indirect heating of the material
  • RAP material takes the straight, easy route through the entire system
  • No deflection of the RAP material, which could result in
  • blockages and adhesions /deposits
  • Mixer is arranged precisely vertical beneath the recycling drum
  • Careful use of resources
  • Lower emissions figures total carbon < 50mg/Nm³
  • The system meets the requirements of the new “Technical
  • Instructions on Air Quality Control” (Regulation “TA Luft”)
  • This process ensures that the RAP material is already heated to processing temperature (160 °C)
  • Total energy required for operation of the plant is reduced

Benninghoven GmbH & Co. KG is a member company of the Wirtgen Group, an expanding and international group of companies doing business in the construction equipment industry. This Group includes the five well-known brands, Wirtgen, Vögele, Hamm, Kleemann and Benninghoven with their headquarters in Germany and local production sites in Brazil, India and China. Worldwide customer support is provided by its 55 own sales and service companies. Within Wirtgen Group, Benninghoven offers innovative sollutions to the asphalt industry, provides a complete range of mobile and static asphalt plants and their components. With over 750 employees in Germany and abroad is carried out everything from planning to installation, from a single source.

© 2019 BENNINGHOVEN GmbH & Co. KG

Benninghoven GmbH & Co. KG is a member company of the Wirtgen Group, an expanding and international group of companies doing business in the construction equipment industry. This Group includes the five well-known brands, Wirtgen, Vögele, Hamm, Kleemann and Benninghoven with their headquarters in Germany and local production sites in Brazil, India and China. Worldwide customer support is provided by its 55 own sales and service companies. Within Wirtgen Group, Benninghoven offers innovative sollutions to the asphalt industry, provides a complete range of mobile and static asphalt plants and their components. With over 750 employees in Germany and abroad is carried out everything from planning to installation, from a single source.

© 2019 BENNINGHOVEN GmbH & Co. KG

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