PNEUMATIC FLOTATION MACHINE Russian patent published in 1994 - IPC

FIELD: separating solid materials. SUBSTANCE: pneumatic flotation machine has a flotation chamber made of a conical tank which is divergent upward and provided with a socket at the top part. Pneumatic-hydraulic aerators are uniformly arranged over periphery of distributors in pairs on both sides of each slot-like port which connects spaces of ring distributors with the flotation chamber. They are fixed in points located within the flotation chamber along radial lines which connect central part of each slot-like port with axis of the chamber. The number of rows of pulp separators, which are arranged over a vertical line, is equal to the number of rows of the slot-like ports that results in uniform supplying to the chamber, batching and differentiation by coarse and density of particles. Side walls of a hollow cone of an aerating apparatus is made of assemble of conical rings mounted in a spaced relation to each other over the height and partially received within each other for providing enhanced mineralization of useful particles. Diameter of the rings decreases in the direction of the top of the hollow cone whose wide part is provided with the aerators arranged over its axis in series by two stage. EFFECT: enhanced efficiency of flotation process. 5 cl, 4 dwg