Method for separating off light materials, in particular plastic parts, from substrate mixtures and apparatus for carrying out the method

摘要

The invention relates to a method for separating off light materials, in particular plastic parts, from, if applicable disintegrated, in particular wet-ground substrate mixtures, preferably waste material fractions or pre-sorted refuse fractions, in which the substrate mixtures are subjected to gravity separation in a sink-float basin and the floating light-material phase is removed and afterwards, if applicable after drying, subjected to further processing and is characterised in that the substrate mixtures subjected to the gravity separation are acted upon by liquid jets during their residence in the sink-float basin. The apparatus for carrying out the method is characterised in that at least one, preferably a number of jet nozzles is arranged in particular above the sink-float basin, with which nozzles liquid jets can be sprayed onto the substrate mixtures in the sink-float basin.