RTT Steinert UniSort Flake sorting machine

The RTT Steinert UniSort Flake machine is based on near-infrared (NIR) and colour-recognition technology to achieve high efficiencies for sorting plastics, metals and other materials down to very fine fraction sizes.

Reclaiming pure secondary raw materials without contaminants is a complex task, as achieving high-value recycling requires that even the smallest particles are reliably separated according to their material type and colour. The machine is suitable for sorting fine-grain materials, whether using NIR or colour sorting, of plastics, metals or minerals.

Features include: fraction range size of 3-30 mm (colour sorting)/5-30 mm (NIR sorting); detections of >24 million/s (colour sorting)/>27 million/s (NIR sorting); purity of >90%, depending on previous contamination; separation of >85%, depending on previous contamination; belt speed of 3-4.5 m/s; throughput per module of 0.4-2 t/h (depending on the material to be sorted and degree of separation); sorting width of 750 mm; nozzle bar of 120 high-speed valves; nozzle-grid of 6.25 mm.

Sized at 2000 x 1500 x 4100 mm, units are available for plastic and colour sorting.

The plastic-sorting UniSort P Flake uses hyperspectral imaging. The NIR technology is used to detect different types of plastic grades. It separates foreign plastics out of the flow of bulk material, making it suitable for sorting PET flakes, re-granulate PVC, PE, PS and PP plastic flakes.

The UniSort C Flake colour sorter is developed to sort materials/fractions of different colours. It is used for sorting clear PET from coloured material/fractions and for sorting aluminium and lead out of copper and copper wire.