DEVICE FOR OPTICALLY SORTING CULLET, OR A MASS OF RECOVERED GLASS ELEMENTS HAVING BEEN SUBJECTED TO A CRUSHING OPERATION AND COMPRISING INFUSIBLE OR REFRACTORY ELEMENTS, AND PLANT COMPRISING SUCH DEVICES

摘要

Optical sorting device, for scrap comprising glass particles and particles of different nature, includes an inclined plane of translucid material at the top of which the scrap is spread by a discharge device. An elongated light source is positioned below the lower face of the inclined plane along its wit. An elongated opto-electronic unit, with a charge-coupled integrated circuit, is positioned above the upper face of the inclined plane across its width. Certain scrap particles are ejected by an ejection device consisting of a series of elongated pieces disposed side-by-side at the bottom of the inclined plane and across its width, each piece being displaceable between a rest position and an operating position under control by the detection unit to direct particles which slide on the pieces towards a second outlet when the pieces are in the rest position, and towards a first outlet when the pieces are in the operating position. Also claimed is an optical scrap sorting installation having one or more of the above devices, in which the detection unit has high sensitivity, and one or more of the above devices in which the detection unit has low sensitivity.