APARATO PARA CLASIFICAR NEUMATICAMENTE UNA MEZCLA HETEROGE- NEA DE MATERIAL FORMADO POR PARTICULAS SOLIDAS.

摘要

Apparatus comprising an elutriation column for classifying a heterogeneous mixture of particulate solids material is provided with means for improving the classification of the material fractions primarily on a density basis. The material to be classified is impacted with sweep air upstream of the elutriation column for reducing the size of any bundles of agglomerated particles admitted to the apparatus thereby reducing the affect of sail area on the classification process. Additional means are provided downstream of the elutriation column for dispersing reagglomerated particles whereby the same can be returned to the elutriation column for reprocessing.