METHOD AND APPARATUS FOR THE MANUFACTURE OF A RUBBER GRANULATE FROM OLD TYRES

摘要

A method for the manufacture of rubber granulate from old tires in which the tire is in a first cutting operation cut into strips extending along its perimeter and the bead strips which contain steel elements are rejected. In a second cutting operation, which is in a direction oblique to the first cutting operation at least the strips which extend substantially in the direction of the tire perimeter and contain textile fibres are cut through. Following the rubber portion is separated from the fabric in a crushing mill and finally the pieces are sorted according to the size. An apparatus for carrying out the method comprises a longitudinally cutting device with cutting edges extending in the direction of conveying of the tire and downstream thereof a transversely cutting device having cutting edges extending at right angles to the direction of conveying. The apparatus further comprises a crushing mill for tearing the cut pieces and sieving and sorting devices, all the devices being interconnected by conveyors.