New Wirtgen KMA 220 Can Use 100% Recycle in Green Mixes

New Wirtgen KMA 220 Can Use
100% Recycle in Green Mixes

March 2009 The new KMA 220 from Wirtgen America, Inc. builds on the success of its predecessor, the KMA 200, by adding a third axle to enhance the roadability of this popular portable cold mix plant. All three air-suspension axles have raising and lowering capability, as well as automatic, load-dependent all-wheel air brakes.


The KMA 220 portable cold mixing plant from Wirtgen will mix 220 tph of cold mix asphalt, without visible emissions and without requiring any EPA operating permits. Virgin and/or reclaimed materials can be processed using emulsions, foamed asphalt, lime, cement, polymer additives, fly ash and other materials. Because no heating is required, the mixing plant is virtually emission-free.


To make foamed asphalt Green Mix with the KMA 220, milled reclaimed asphalt pavement (RAP), excavated road base, and crushed recycled concrete aggregate (RCA) all can be incorporated up to 100 percent in cold Green Mix from the KMA 220.


 In many ways, Wirtgen”s self-contained KMA 220, like its predecessor, the KMA 200, is the ultimate “Green Machine”,” said Wayne Evans, Wirtgen vice president, business development/pavement technology. “Its productivity is such that it can produce a 20-ton truck load of up to 100 percent recycled asphalt cold mix every six minutes. Contractors can locate this permit-free portable plant at or near their projects and cut dozens of trucks from long hauls, slashing traffic congestion and truck diesel exhaust.”


Its features include its fully diesel-hydraulic drive of all components. Driving the KMA 220 is a completely modified, low-wear, twin-shaft continuous mixer, allowing a mixing capacity of 220 tph. The mixing plant is driven by a powerful diesel engine with an output of 175 hp, and all components are fully diesel-hydraulic driven. To ensure an ample supply of water, the capacity of the water tank is 1,188 gallons.


The precise sequence of the mixing process and all cold mix recipes are easily monitored and controlled by the Cockpit Graphics Center (CGC), an exceptionally user-friendly operating and control panel.


Grids on top of the material hoppers can be folded hydraulically to facilitate cleaning. Folding ramps on the sides of the material hoppers protect the plant from being contaminated.


The KMA 220 is powerful when in operation, but can be completely transported on its low-bed trailer. The loading conveyor is simply folded for transport, and the operator”s cabin is slewed into its transport position at the end of the low-bed.





Wirtgen America, Inc., Nashville, is the North American arm of the Wirtgen Group, the single-source marketer of the world”s most technologically advanced lines of asphalt reclaiming and recycling equipment from Wirtgen, asphalt and soil compactors from Hamm Compaction Division, asphalt pavers from Vögele America Inc., and construction materials processing equipment from Kleemann Inc. USA.


In late 2004 Reinhard Wirtgen, founder of Wirtgen Group, was honored as one of the “Top 100 Private Sector Transportation Design & Construction Professionals of the 20th Century” by the American Road & Transportation Builders Association (ARTBA).


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