Colour sorter

The second sorting market is in use for coarse cereals, such as wheat, corn, peanuts, different kinds of beans, sesame seeds, etc.

[1] Optical color sorters are among the newest technologies in seed and grain processing.

Technology range includes a simple monochromatic version, to bichromatic, NIR, InGaAs, RGB Full Color, and shape sizing.

[4] Color sorters are used in the food processing industry, such as coffee, nuts, and oil crops with the goal of separating items that are discolored, toxic (such as ergot), or not as ripe as required.

Optical color sorters (CCD color camera) combine X-ray sorting technology and NIR (near infrared spectrometry) to pick out the impurities of ore, minerals, stone and sand products, or separate ore into two or more categories.

[6] For instance, a color sorter can separate non-food-grade polyethylene terephthalate from food grade.

[8] Belt-type color sorters break a smaller percentage of the material (important for nuts), and the product stays relatively static during the transport process as it moves horizontally on the belt.

color sorter
Color sorter's working principle is according to the difference of the optical properties of the material, using photoelectric detection technology automatic to sort the heterochromatic granule from raw material.
A color sorter discarding unripe, overripe or otherwise unsuitable coffee fruits