FLOATATION HYDRAULIC CLASSIFIER Russian patent published in 1996 - IPC

FIELD: floatation of mineral resources, can be used in floatation of coarse-impregnated metallic and non-metallic minerals. SUBSTANCE: compartments 1 are made in the form coaxially arranged circular vessels that are U-shaped in radial section. The dimensions of the vessels increase from the axis of compartment 1. Adjacent vessels enter each other with a shift in axial direction. Pneumohydraulic aerators 10 are positioned on vertical walls 11 of the collectors facing the apparatus axis. Opposite walls 15 are curvilinear in vertical direction. Pneumohydraulic aerators 10 and branch pipes 14, used to discharge the compartment products, are arranged in a staggered order. Partitions 6 are coneshaped. Annular gaps 8 are provided in the bottom part of the compartments. Shutters 9 are cone-shaped. Product collectors 12 are ring-shaped. Passages 13 from the compartments to collectors 12 are ring-shaped. Charging device 2 is made up of cyclone 16 and deflecting main (19) and additional (20) cone-shaped members. Cyclone 16 has sand adapter 17 and annular slot 18. Additional deflecting member 20 has helical ribs 22 and 23 positioned on its upper and lower surfaces. Main deflecting member 19 has fluoroplastic coating 24 and delivery air duct 25 with branch pipe 26 used to supply air under additional deflecting member 20. Additional deflecting member 20 is located under main deflecting member 19 for rotation about the vertical axis. Delivery air duct 25 and the upper end of branch pipe 26 through bearing 27 are installed on the top of main deflecting member 19. Additional deflecting member 20 is secured on branch pipe 26, and its lower part has holes. EFFECT: intensified process and improved extraction of valuable component due to improved aerohydrodynamic conditions of table gravitation floatation separation of mineral particles and distribution of intracompartment flows of pulp, as well as enhanced indices of table gravitation due to improved conditions of materials feed onto froth blanket. 3 cl, 7 dwg