3-D Air Classifiers are supplied in four basic designs -Single or double-stage classifiers -Fresh air or recycled classifiers
Single-stage classifiers are used to separate the material into two fractions: - acceptable and course material, with respect to three dimensional configuration; thickness, shape and density. Two-stage classifiers separate into three fractions, e.g., surface layer, core layer, and coarse material.
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Type NWith fresh air classifiers, Type N, the air quality required for classifying is drawn in from the immediate surrounding area of the classifier and is discharged to atmosphere.Type RRecycled classifiers, Type R, discharge only 5% of the classifying air to atmosphere. The remaining 95% is recycled to the air inlet of the classifier.