Atlas Technologies manufacture both the kinds of asphalt plants, those with integrated mixing and those with separate mixing. In single units, both heating and mixing happens simultaneously in one place and the dust is exhausted from the system after mixing. That results in a good quality hot mix.
As opposed to that, double drum asphalt mixers use separate mixing and drying chambers and the residual dust from the aggregate is sucked out by the pollution control device which is located at the very inlet of the aggregate. This makes dust-free aggregates possible even before they are loaded in the drum. As a consequence, the quality of mixture produced is better quality as opposed to single drum parallel flow type plants.
