Discontinuous asphalt plants BRT

The BRT tower has been completely redesigned, from the screen to the material discharge outlet.

The screen is inclined type, which guarantees a fast and efficient selection of materials. The nets, their positioning and fixing have been revised, with the possibility of being able to change them in a very short time. . The screen is now positioned inside a new insulated structure and completely accessible from all sides, with special doors and large openings. Part of the structure was inserted on rails, not to use cranes or hoists for opening.

From the screen level it is possible to access, through a door and a special passage, the direct hopper which has been completely redesigned in order to avoid clogging even with the use of high percentages of rap.

In particular, for the direct, a special very spacious channel has been created with a special inclination, covered with special wear-resistant armor with a new geometry designed for the sliding of the material and the possible rapid replacement.

A large double opening door has been inserted under the direct duct in order to guarantee unloading even in the case of storage of material with rap.

The whole hopper under screening unit has been suitably insulated and designed for the storage of hot sieved materials ready to be weighed and mixed, with the addition of rap material in the mixer. Double opening doors have also been designed for these hoppers.

The mixer has been oversized compared to the nominal production in order to better manage mixing times, especially when cold rap is added. The internal geometry of the arms and blades has also been improved to optimize the mixing and reduce wear.

For the storage of the finished product it is possible to choose among the models available with various volumes and storage compartments, which can be fed by shuttle for large storage. It is also possible to weigh the storage silos in order to have evidence of the available material and to be able to set, directly from the computer and automatically, the material to be unloaded into the trucks, even for small quantities.

The whole tower can be covered with a special bardage that allows to contain emissions into the atmosphere, while maintaining enough space for maintenance.

The dryer installed is the Special Dryer-RA type, a model now widely tested, with a high number of installations made.

This type of dryer, with a special ring for rap inlet, has been designed to minimize cleaning interventions. Thanks to the particular internal blading and the presence of a special combustor, the virgin aggregates and the rap are completely dried and mixed, creating a homogeneous mixture that guarantees high quality standards.

Furthermore, thanks to the recovery of the fumes coming from the heated rap material, a significant fuel saving is obtained, a system now tested and proven by several years of experience.

The dryer is connected to a bag filter equipped with a special pre-separator and a new washing system that allows to avoid the alterations related to the production and humidity of the external environment.

In addition to the hot rap line, it is possible to install a second cold line, which allows the rap to be brought to the mixer and allows it to be weighed and dosed in the mixer. Obviously, it is also possible to work only with this last line or with the combined use of hot and cold depending on the needs and the request to treat high percentages. . By filling the cold rap, the well-known heat exchange takes place and all the moisture is released into the mixer: a special automatic suction and treatment system for these fumes is then installed.

The entire production process is controlled by the new Bernardi software, installed in the cabin computer and connected via internet to Bernardi Impianti headquarters, which can intervene promptly if necessary.