Turning old debris into new building material.

Recycling demolition waste, demolished concrete and spoil in Amsterdam, Netherlands

Europe’s largest recycling plant is located in the vicinity of Amsterdam’s Schiphol Airport. The turnkey plant was designed and built by Kleemann for processing demolition waste, demolished concrete and asphalt into high-quality aggregate for the construction industry. It includes, among other units, Kleemann’s largest impact crusher model SHB 20/160. The recycling plant has a feed capacity of up to 700 tons of material per hour. One year of planning, construction and assembly was needed before the new recycling plant was put into operation. To protect the environment from dust and noise, the entire plant was subsequently enclosed with a trapezoidal panel construction.

Overview before enclosing

Overview before enclosing

The material is delivered into the plant via a feed hopper and is then transported to a double-deck screen VU 2B/ST 2050 via an apron feeder. The feed material is separated at grain sizes of approx. 60 mm on the upper deck and 15 mm on the lower deck. Grain sizes smaller than 15 mm are either discharged and stockpiled as pre-screen material, or are optionally added to the 0-40 mm mineral aggregate mixture.

Material of more than 60 mm grain size is fed into the impact crusher SHB 20/160 where it is crushed to grain sizes ranging from 0 to 300 mm. On the downstream screens, the crushed aggregate is separated at 20 mm, 40 mm and 100 mm sizes, and is then cleaned from light materials. Separation of the metal portions contained in the demolition waste and demolished concrete is effected by 4 electro-magnetic belt separators installed at four different locations in the entire process.

After screening, the grain sizes 0 to 20 mm and 20 to 40 mm are delivered to the end product stockpile as a 0-40 mm mixture. The remaining 40 to 100 mm grain size, as well as grains larger than 100 mm are forwarded to a secondary cone crusher, where the oversize material is crushed to a 0-40 mm grain mixture and is then discharged to the end product stockpile.

The recycled product is upgraded with natural sand and cement to a hydraulically bound base layer, and is presently used for soil stabilization at Amsterdam’s Schiphol Airport.

• Operating site: industrial estate in Amsterdam, The Netherlands

• Feed material:

o demolition waste and demolished concrete (sectional size up to approx. 1700 x 1300 mm, max. length approx. 2000 mm)

o spoil (apparent density 1.6 t/m³, feed size 0 to 20 mm)

• Feed capacity: up to 700 t/h

• Crushing capacity:

o primary crusher: up to 500 t/h (final aggregate size approx. 0-300 mm)

o secondary crusher: up to 250 t/h (final aggregate size approx. 0-60 mm)

• End products:

o pre-screen material: 0 to 15 mm

o crushed aggregate mixture: 0 to 40 mm

o demolished concrete (directly from secondary crusher, unscreened): 0 to 60 mm

• Total installed power of all machines and conveying units: approx. 1350 kW

• Main components:

o Kleemann impact crusher SHB 20/160

o Kleemann triple-deck vibrating screen VU 3G/F 2060