Mobile cold recycling mixing plant KMA 220i

KMA 220i Mobile cold recycling mixing plant

220

t/h

Twin-shaft pugmill

129 kW / 175 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 equipped with an independent powerstation. The mobile concept enables the plant to be relocated to different operating sites quickly and set up in next to no time. Wheeled loaders empty all kinds of unbound source materials into the proportioning hopper via vibrating grids. Silos and / or tankers supply the plant with binding agents such as cement, bitumen emulsion or foamed bitumen. For high-precision metering, a microprocessor-controlled system monitors the addition of source materials and binding agents into the mixing chamber. A heavy-duty twin-shaft compulsory mixer produces a homogeneous construction material of high quality. In a final step, the recycled mix is simply discharged via the slewing belt conveyor which enables even long semitrailers to be loaded to full capacity.

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Mixing procedures

Cold recycling can be achieved either in-plant by hauling material recovered from an existing road to a central depot where it is fed through a mixing unit, or in-place using a recycling machine.

When mixing in-place / in-situ, a cold recycler granulates the existing pavement while mixing in binders and water homogeneously at the same time.

When mixing in-plant, reclaimed asphalt pavement and crushed stone are transported to a mixing plant located in the vicinity of the construction site.

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Control technology

WIRTGEN machines are fitted with a machine control system of the highest quality, in which the large proportion of software developed in-house plays the decisive role. WIRTGEN puts a special focus on continuous improvement, which has the added effect of significantly increasing the operational reliability of the machines. In addition, many years of experience in software and hardware development allow for higher and more flexible machine functionality in terms of applications and meeting specific 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
Length excluding cabin / including cabin
Width
Height
Mixing performance
220 t/h
Max. particle size
45 mm
Hopper capacity
2x 6 m³
Feeding width
3,710 mm
Feeding height (average)
3,600 mm
Design
Twin-shaft pugmill
Operating principle
Continuous mixer
Drive power
2x 30 kW
Power
129 kW / 175 HP
Displacement
6,060 cm³
Exhaust emissions category
EU Stage 4/US EPA Tier 4f
Operating weight, CE
29,950 kg
Length excluding cabin / including cabin
13400 mm / 14710 mm
Width
2,500 mm
Height
4,000 mm

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