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Air Classifier : Air classifier is an industrial machine which sorts materials 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. Inside the separation chamber, air drag on the objects supplies an upward force which counteracts the force of gravity
and lifts the material to be sorted up into the air. Due to the
dependence of air drag on object size and shape, the objects in the
moving air column are sorted vertically and can be separated in this
manner.
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