Sorting out mineral-containing objects or plastic objects

Abstract

A method and a sorting plant for sorting out mineral-containing objects or plastic objects from a single layer material stream is shown. Here it is provided that objects (12) of the material stream are irradiated with stimulating light and the resulting fluorescent light is detected in the form of an image of the fluorescent points, the objects of the material stream are irradiated with object detection light outside the fluorescent light, and the transmitted light after passage between the objects or the reflected light of the objects is detected in the form of an image of the individual objects, an object is then defined as containing at least one specific mineral or one specific plastic if the fluorescent light of said object lies in a predetermined intensity range for at least one predetermined wavelength range, and the so defined objects are separated from other objects of the material stream.

Dependencies are inferred from the claim text.