The TSX models have been developed to meet the need for an increase in recycling of materials such as bitumen and aggregates, as well as the reduction in the quantities of CO2 emissions linked to production and transport logistics of these raw materials. The TSX technology also benefits from a new process called DUOTHERM. This combines thermal exchanges between RAP and slightly overheated aggregates and thermal exchanges between RAP and moderate-temperature gases that have already exchanged with aggregates beforehand. Using this technology helps to reduce emissions into the atmosphere, below statutory regulations.
The TSX technology ensures a high-quality mix as it features a single dryer drum composed of three distinct zones, associated with a twin-shaft mixer as a standard. The first is the combustion zone, where the burner’s flame expends and generates hot gases to heat-up and dry materials. In the second zone, hot gases from the first zone exchange heat with the aggregates, drying. This zone also acts as a thermal screen to avoid any flame radiation in the third zone. The third zone meanwhile is where the RAP is introduced by the recycling ring but the material is protected from a direct flame by the second zone. Drying of the RAP occurs in the third zone due to the DUOTHERM process.
During this operation, RAP binder migrates homogeneously onto the aggregates. At the drum outlet, this homogeneous mix is conveyed to the twin-shaft mixer where it is mixed with imported binder and potential rejuvenator. Meanwhile, the long mixing time ensures full binder remobilisation.
