An air classifier is an industrial machine which material's particles sorting by a combination of size, shape, and density. It works by injecting the material stream to be sorted into a chamber which contains a column of rising air, Air classifiers are commonly used in industrial processes where a large volume of mixed materials with differing particles and physical characteristics need to be sorted quickly and efficiently, accuracy. One such example is in recycling centers, where various types of wheat grains, wheat crop, wheat flour, metal, paper, plastics granules arrive mixed together and need to be sorted before further processing can take place.