PNEUMATIC FLOTATION MACHINE Russian patent published in 1997 - IPC

FIELD: mineral concentration by flotation, particular, devices for mineral separation; applicable in coarse-grained flotation of ore and nonmetalliferous raw materials, and flotation treatment of industrial and waste waters. SUBSTANCE: machine has flotation cell with bottom and loading ports uniformly staggered over cell perimeter, and slotted screening surface. Machine has device for supply of coarse-grained materials onto foam layer, device for loading of fine-grained pulp, pipe-like mixer with inlet for coarse-grained pulp. Machine has unloading device with outlet for unloading of cell product, foam-collecting launder, pneumohydraulic aerators located on side walls of flotation cell and arranged in circular block having circular cylinder for compressed air and circular collector for pressure water. Pneumohydraulic aerators are located inside circular collector for pressure water. Aerating device is made in form of hollow cone. Side surfaces of aerating device are made in form of a set of conical rings. Hollow cone of separating device has pneumohydraulic aerators arranged in succession. Parabolic deflector faces with its open part oncoming pneumohydraulic aerators in base of hollow cone. Outlet nozzle of pneumohydraulic aerator of the first stage is joined to inlet of pneumohydraulic aerator of the second stage. Pneumohydraulic aerator of the first stage is tubular. Pneumohydraulic aerator of the second stage is made in form of jet nozzle with water and air supplying inlets. Device for loading of fine-grained pulp is made in form of circular mixing chamber with distributing collector and inlets for pulp reception. Internal hollow of mixing chamber is communicated with distributing collector and pulp inlets. Axes of pneumohydraulic aerators are directed down towards bottom of mixing chamber. Loading ports in side walls of flotation cell are made in form of triangles with their vortexes directed upward. Tubular mixer is made in form of cone-shaped vessel widening upward and has receiving chamber in its lower part. Aeration chambers have water inlets on the side of upper large bases of hollow cones. EFFECT: higher efficiency. 5 dwg