Abstract: The rag tearing machine embodies an inlet station 1 in which the materials to be processed for a first time 23 and recycled waste 19 are poured, separately, onto the circulating belt 2. Several rag tearing stations (4a, 4b) are each followed by fan groups (5a, 5b), including side doors 8 access for which throw a material coming from the preceding station to a filtering box 9 in which powder, after a sharp bend 10 separates from the material by passing through a pierced plate 11; the material then falls down and passes to the following station and so on until the end of the machine. The machine further includes gates 14 for bypassing subsequent stations and if the material is considered sufficiently processed, the respective gate is opened and the material goes out of the machine through a duct 15.