Therefore, empirical tests let identify two problematic points in the extraction process which are explained below.
A first area was noted under the overband, where ferrous and non-ferrous elements arrive not being hooked together up. This zone seems to a funnel and is the place of heterogenic jam’s generation. Plastics looking like trash bag, textiles, foams hook up metal rods. All 20 minutes an operator needs to remove jam, since extraction line has stopped working.