The drywall rises in the ranking of ecological construction products becoming completely recyclable. Thanks to the first recovery plant of drywall activated at the Disposal Division of Cava di Trezzano in the Limbiate (Mi) plant, in fact, the complete recovery and recycling of the two basic materials, cellulose and gypsum, becomes possible. Limbiate is for the moment the only plant in Italy for the recovery of plasterboard (the official inauguration is scheduled for November 15).
The drywall it is widely used in construction and in green building and considered a good material because it has no contraindications and is very suitable for interior coatings and for the construction of dry construction systems. A limitation of this product in Italy, until now at least, was that it ended up almost entirely in landfills at the end of use due to the lack of a specific technology capable of separating the plaster from the cardboard.
The Limbiate plant is the result of over two years of autonomous development of US and British technologies conducted by the staff of Cava di Trezzano and is the most advanced international technological innovation in this field. The machine is in fact able to completely separate the plaster from the cardboard covering the sheets of drywall.
After selecting the components, the drywall it is loaded into the system's feed hopper using a spider loader. A conveyor belt carries the material to the feeding mouth of the machine which, through a crushing process by impact, separates the cardboard from the plaster with precision. At the end of the process, the two materials exit the plant through separate discharge openings and are directed to different storage areas.
The plaster recovered from the slabs of drywall it can be used in the production of new gypsum products, mortars for construction or to produce cement. The cardboard is instead destined for paper mills for the production of recycled paper and cardboard. This disposal of the drywall cuts costs for those who have to dispose of. The drywall it is in fact included among special waste e it is not considered an 'urban waste', this means that it cannot be given to the municipal ecological pitch.