PLANT AND METHOD FOR THE RECOVERY OF PLASTIC MATERIALS OF POST-CONSUMPTION MATERIALS, SUCH AS VEHICLE BUMPERS AND TANKS

摘要

A plant (1) and method for recovering plastic materials of post-consumption materials, such as vehicle bumpers and tanks, in the plant, downstream of the volumetric reduction grinder (2), there is provided an intermediate grinder (6) and the washing vat (9) and the centrifuge (12) additionally being arranged upstream of the windmill/granulator (14), while in the method, an intermediate grinding step is arranged upstream of the grinding/granulation step and a subsequent washing step and separation in the vat of the parts of foreign materials through the difference of specific weight, including ferrous, non-ferrous materials and alloys thereof, of the material made of intermediate size, before the grinding/granulation step through windmill/granulator, wherein the washing and centrifugation water is subjected to a continuous purification cycle. In order to increase the productivity of the plant and reducing the maintenance times, the conveying elements for transporting the material are provided mobile, mounted on swivel wheels.

主权项

1. Plant (1) for the recovery of plastic materials of post-consumption products, such as demolished vehicle bumpers and tanks, comprising:
a volumetric reduction grinder (2) for the production of a coarse grain-size of the material of, for example, 50-80 cm, with associated iron removal stage (3), a windmill/granulator (14) for the reduction of the grain-size to a small size of, for example, 5-30 mm, a vat (9) for washing the material,characterised in that:
downstream of the volumetric reduction grinder (2), there is provided an intermediate grinder (6) for an intermediate reduction of the grain-size from about 50-80 cm to an intermediate grain-size of, for example, about 30-100 mm, wherein said volumetric reduction grinders (2) and intermediate grinder (6) are connected by a means or belt (4) for conveying the material, that the washing vat (9) and the centrifuge (12) are arranged upstream of the windmill/granulator (14) and they are fluidically associated with a purification plant (11) for the purification of the treatment water.