HYDRAULIC CLASSIFYING COLUMN Russian patent published in 1995 - IPC

FIELD: separation of solid materials. SUBSTANCE: column has horizontal partitions positioned throughout its height and made in the form of coaxial rings joined together by inclined plates. The latter are located in the zones placed between the rings and their peripheral sections are of various length and lie at different slopes. The partitions are designed so that the flows are forced into transient movement and particles of various size grades move at velocities which difference reaches the greatest possible value. EFFECT: higher accuracy of separation, less power consumed. 4 dwg