New roads made of old material

The demand for increasing quantites of reclaimed asphalt (RA) is becoming ever more evident, particularly in European countries such as Germany, the Netherlands and Switzerland. This one-time waste product – which is gaining recognition as a valuable raw material – has meanwhile found its way into virtually every recipe for quality asphalt. Ammann‘s innovative concept for processing RA goes a whole lot further: It enables addition rates of up to 100  %. The new drying and heating unit (Fig.) from the house of Ammann is based on the counter-flow principle and can heat up to 240 t of asphalt granules per hour. The material has no direct flame contact and is therefore gently heated to the right temperature. Furthermore, the improved drying and heating process improves efficiency in comparison to conventional systems, thereby enabling fuel savings of around 10  %. The discharge temperatures equate to those of an installable asphalt mixture. Several plants of this type are currently operating in Germany and Switzerland. It enables the production of binder courses consisting of 100  % asphalt granules.

 

Ammann Schweiz AG, Langenthal (CH),

Tel.: +41 62 916 6161, www.ammann-group.com

x

Related articles:

Issue 2010-03

Ammann Schweiz AG

The Ammann stand on 4000 m2 will once again be among the highlights at the bauma 2010 for customers in the field of road construction. Ammann‘s three-pillar principle of «Ecology-Safety-Reduction»...

more
Issue 2011-12

Revolution in drying technology: energy-efficient and fast

Our industrial world today would be unthinkable without the drying of solid materials – nevertheless drying is enormously cost-intensive and often has a harmful impact on the environment. Dr. Franz...

more
Issue 2010-10

Process belt technology boosts efficiency

Environmental protection regulations and the public’s growing environmental awareness necessitate alternative disposal possibilities for municipal sewage sludge. Especially thermal recycling, i.e....

more
Issue 2019-04 EL-A Verfahrenstechnik GmbH

EL-A Verfahrenstechnik GmbH

I?n contrast to many other drying methods, contact belt dryers are flexible in their use and can process an enormous range of substances – from flowable suspensions and solid granulates up to...

more
Issue 2019-04 Allgaier Process Technology

Allgaier Process Technology

A?llgaier Tradition meets Digital at Powtech 2019. The Allgaier CD Dryer sets new standards in drying and production of dry substances from liquids, suspensions and solutions. The solids are dried by...

more