Ammann’s efficient RAP recycler at bauma 2019

First published at bauma - April 9, 2019

Ammann claims high efficiency and quality for its RSS 120-M RAP recycler

Ammann believes that its new RSS 120-M RAP recycling machine offers the highest quality output in the market. According to Ferdinando Dell’Orto, global strategy manager shredders: “It doesn’t tear material apart like other recycling machines.”

The machine can produce up to 120tonnes/hour when using milled cuttings in the feed or 80tonnes/hour when using RAP in larger slab form. Weighing 35.5tonnes and measuring 13m long by 2.55m wide, the machine is said to be easy to transport while also being quick to commission on site.

The machine has a higher output quality due to the configuration of the primary shredder, which features counter-rotation at speeds of just 10rpm. This is a key feature and, as Dell’Orto explains: “You have to keep the structure of the grain with the bitumen coating but without generating fines.”

At this comparatively low speed, any lumps of RAP will be broken up, but without fracturing the individual stones and without generating fines, said Dell’Orto. Furthermore, the bitumen coating around each piece of aggregate remains integral with this method. A magnetic separator then removes any tramp iron or steel from the conveyor belt, with the feed going to the double deck screen.

Stand FS.909

According to Dell’Orto, customers can choose from a wide range of mesh sizes to suit their needs, with the machine then producing two output feed sizes. Any oversize material can be fed to the secondary shredder and recirculated into the feed … or it can be output for use as sub-base. The machine is said to be cost-effective and productive and Dell’Orto added, “The return on investment is short.”

Power comes from an FPT diesel rated at 256kW, which drives the generator feeding the machine’s electric motors. It can be operated from mains power, if this is available onsite. Key options include weighing sensors on the output conveyors, which allow users to collate data on material flow rates for use within the proven Ammann telematics technology for full production data.