Laboratory-scale foamed bitumen plant KMA 220i

KMA 220i Laboratory-scale foamed bitumen plant

242

t/hr

Twin-shaft pugmill

129 kW / 173 hp

Mix preparation on construction site

  • The mobile concept of the cold recycling mixing plant means the machine can be used in the direct vicinity of the operation site, saving both money and time.
  • The robust twin-shaft pugmill mixer exhibits high levels of mixing performance with consistent quality.
  • Mixing precisely to formula is made possible thanks to the use of accurate, microprocessor-controlled spraying units for adding various binding agents.
  • The slewing discharge conveyor enables the processed material to either be stockpiled or continuously loaded on to trucks.
  • Solid fold-out or rather extendable supports ensure the machine stands firm and enable it to be quickly and precisely aligned.
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Highlights
Powerful diesel engine
Large water tank
Large, twin-chamber proportioning hopper
High-precision injection systems
Quick setup procedure
Slewing conveyor
Auger conveyor with weighing unit
Hopper take-off conveyor including material weighing
High mixing capacity
Ease of transport

Cold recycling with the KMA

The KMA 220/KMA 220i is mounted on a flatbed semitrailer and has its own motor station. This mobile design allows the system to be quickly moved to different locations and set up rapidly. Wheel loaders pour a wide variety of unbound raw materials into the proportioning hopper via vibrating grates. Silos or tank trucks supply the plant with binding agents such as cement, bitumen emulsion, or foamed bitumen. A microprocessor-controlled plant control system monitors the addition of raw materials and binding agents into the mixing chamber for high-precision dosing. Here, a heavy-duty twin-shaft pugmill produces a high-quality, homogeneous mix. Finally, the finished mix is smoothly loaded onto the swivel-mounted conveyor, which makes it possible to completely fill even long semitrailers.

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Mixing procedures

Cold recycling can either be carried out in-plant by transporting the material recovered from an existing road to a central warehouse and passing it through a mixing plant, or in-place/in-situ using a cold recycler.

In the in-place/in-situ mixing process, a cold recycler granulates the existing pavement and homogeneously mixes in the binding agent and water.

In the in-plant mixing process, RAP and crushed rock are transported to a mixing plant near the construction site.

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Control technology

All WIRTGEN machines feature a built-in, high-quality machine control system. The fact that the majority of its software is developed in-house plays a key role in this regard – WIRTGEN has placed a special focus on ongoing development, thus significantly increasing the operational reliability of its machines. Many years of experience in software and hardware development also makes it possible to achieve more flexible and sophisticated machine functionality in terms of the range of applications and individual customer requirements.

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Technical specifications

Mixing performance
Max. particle size
Hopper capacity
Feeding width
Feeding height (average)
Design
Operating principle
Drive power
Power
Displacement
Exhaust emissions category
Operating weight, CE
Width
Height
Length excluding cabin / including cabin
Mixing performance
242 t/hr
Max. particle size
1.8 in
Hopper capacity
2 x 7.8 yd³
Feeding width
12 ft 2 in
Feeding height (average)
11 ft 10 in
Design
Twin-shaft pugmill
Operating principle
Continuous mixer
Drive power
2x 30 kW
Power
129 kW / 173 hp
Displacement
370 in³
Exhaust emissions category
EU Stage IV/US EPA Tier 4f
Operating weight, CE
66,028 lbs
Width
8 ft 2 in
Height
13 ft 1 in
Length excluding cabin / including cabin
44 ft / 48 ft 3 in
Please feel free to contact us!

All details, illustrations and texts are non-binding and may include optional additional fittings. Subject to technical modifications. Performance data dependant upon operational conditions.