The flotation machine was designed for mineral processing by flotation. The flotation machine can be used in a pulp flotation process in a wide range of solid parts concentration as well as for enrichment of minerals of high specific gravity. Thanks to the structure of the flotation machine it is possible to construct a multi-cell machine where individual cells are set in line or can be set in a broken line arrangement. The multi-cell flotation machine consists of a series of sections located at different levels. A minimum distance between the levels of individual sections is 500 mm. One section can comprise up to 3 cells. The material comes to the flotation cell through a feed cell. Individual sections are linked by an intermediate channel with a valve system. The waste goes out of the machine through a waste cell. Working components (mushroom valves and pneumatic piston servomotors) of an automatic system controlling pulp level in the individual cells of a section are located in the intermediary and waste cells. The operation of the multi-cell flotation machine is controlled by the automatic system controlling the pulp level in the cells of each section and by individual automatic systems controlling the volume of the air pumped to each cell.

Flotation cell

The flotation cell is constructed in a form of a cylindrical tank with a flat bottom. The upper part of the cell contains froth product runners in a radial arrangement connected to an outer cumulative runner. The cell and its components having contact with pulp are protected against corrosion by thick epoxy – acrylic coating. To ensure a long-life of the flotation machine, side surfaces are covered with polymeric or ceramic coating, and the bottom as well as control boxes with ceramic lining. The feed and waste cells are connected to the flotation cell by welding. Control of the level in individual cascades is performed by the valve system, located on the edge of the last cell in the cascade. The last cell in the whole flotation flow is equipped with a waste box with the same valve system as is used for the control of level in the individual cascades.

Aerator

The task of the aerator lies in pulp mixing in the whole volume of the cell, in dispersion of the air, which is supplied into the flotation process, and in generation of inner circulation of the pulp of appropriate intensity and configuration. The aerator consists of a rotor, a stator and a base of the stator. The rotor is mounted to the bottom flange of a hollow shaft by bolts. Components of the aerator are protected against erosion by high quality abrasion-resisting coating, which ensures three to five year correct operation. The stator base is central mounted at the bottom of the cell by means of wedges. The sections of the stator are mounted to the base by bolts.