OLBIA PRODUCTION PLANT
BITUMINOUS CONGLOMERATE
The production site in Olbia has been operational since May 2019. This is a new plant producing bituminous conglomerates. With the new establishment, located in the North-East of Sardinia, there is an increase on the supply of materials strongly required by the island, due to the maintenance plan currently involving its road infrastructure. This is the largest bituminous conglomerate plant on the island, with a production capacity of 250 tonnes per hour.
Service available:
Asphalt production and marketing
An ideal discontinuous plant for the production of all types of mixtures. The plant (FRAsphalt Plant) is equipped with the new dryer cylinder model, FR-RC 27510, proposed on the market with remarkable results: it enables large quantities (up to 50%) of milled material to be fed into a specific feeding system, which guarantees conglomerate’s quality and compliance with all atmospheric emission parameters. The milled materials are funnelled through this system, via specific “channels”, to be mixed with “virgin” material. The temperature of the mixture at the outlet of the cylinder is about 190°, even with quantities over 40%. As there is no need to compensate the heat exchange between hot and cold material by increasing the aggregate temperature, this results in a significant reduction in fuel consumption.
Vitali plant is equipped with two lines of milled material, one “hot” in the FRRC cylinder 50% and one “cold” 30% weighed inside the mixer : the use of these two lines makes it possible to produce a mixture composed of 80% recycled material. In order to be able to use any type of solid or liquid additive, 2 special dispensers have been installed which are able to introduce into the mixture granular oxides, resins, ground tires, fibres, polymers, granular synthetic bitumens, liquid additives and waxes. The plant offers a large storage capacity of hot material in the under screen, approximately 91 tons, ready to be mixed as required. Additionally, all walls are insulated, while the system is equipped with 4 insulated finished product compartments each 100 mm with a capacity of 180 tons.
The whole machine has been insulated in order to reduce noise and contain dust dispersion. Thanks to the use of extractor fans and special ducts, heat is reintroduced into the production cycle, resulting in reduced fuel costs for heating. The machine is controlled in full automatic mode by FR software which separates the processes into 2 phases, one for aggregates extraction and one for dispensing. This makes it possible to take advantage of the large storage space in the tower, using only the motors needed for mixing, thus avoiding waste of energy.