Improvements in the construction of static air classifiers for the classification of differential granulation material (Machine-translation by Google Translate, not legally binding)

摘要

Improvements in the construction of static air classifiers for the classification of differential granulation material, with a vertical classification channel that is traversed by the sorting air in a zig-zag path from bottom to top, leaving the coarse material the lower end and the fine material together with the air at the upper end of the classifier, characterized in that the classifying channel is constituted by an enclosure with annular cross section or limited by concentric polygon as ring, whose internal and external diameter is modified in a zig-zag shape in the longitudinal direction of the channel. (Machine-translation by Google Translate, not legally binding)