process for treating a light fraction of waste preferably household waste and system for the implementation of the procedure

摘要

The heavy components contained in domestic refuse are first separated out, the light fraction consisting of paper, tougher materials such as plastic film and particulate impurities remaining. This material mixture is comminuted in a shredder (1), the tougher materials, such as plastic films, being obtained in oversizes. The material treated in the shredder (1) is conveyed to a screen (2) having different hole sizes, where the oversizes are separated out. The system also comprises a drying device (3) and an air classifier (4). An intermediate fraction consisting essentially of paper flakes is removed from the screen device (2). The drying device (3) serves for drying the intermediate fraction and the air classifier (4) serves for separating the paper with a higher basis weight and that with a lower basis weight. IMAGE