SU440160A1 - Pneumatic flotation column - Google Patents

Description

The invention relates to the enrichment of minerals, in particular to the flotation enrichment of fine fractions of ores of ferromagnetic (magnetite, ilmenite) and weakly magnetic (manganese, titanium, tungsten and other) minerals. To enrich the ores, a pneumatic flotation column is known, which is a column with a circular, elliptical or rectangular cross section. Flotation in the column is carried out with countercurrent movement of air bubbles rising from the aerator located in the lower part of the column and the pulp fed to the middle part. The foam product is discharged at the top and tails at the bottom of the column. Like other flotation machines, the column machine does not provide for the recovery of thin sludge, since particles with a mass less than a certain critical value flow around air bubbles and do not attach to them. A distinctive feature of the proposed flotation column is the presence of a magnetic system located on the outside of the hull in the zone of mineralization of the bubbles. This will allow aggregating and extracting fine minerals of magnetic minerals into the foam product. The drawing shows a pneumatic flotation column. It consists of a vertically arranged column 1, equipped with a magnetic system 2, which is permanently mounted on a column section made of non-metallic material, for example, plexiglas, glass, textolite, glass-fiber materials. The column has a loading pipe 3, an aerator 4, a foam removal section 5 and a discharge cone 6. The device operates as follows. The original pulp enters the column 1 through the loading nozzle 3. When particles pass through a magnetic field of several thousand hours by the oersted, created by the magnetic system 2, the magnetic particles flock, and the aggregates, fixed on air bubbles rising from the aerator 4, pass foam that is discharged through the foam section 5. Hydrophilic particles that are not fixed to the bubbles, as well as non-flocculated, we have been discharged through the lower discharge cone 6. A pneumatic flotation column with a magnet oh system allows to enrich the thin fraction and weakly magnetic ores, including plum obesschlamlivani which presently are completely lost.

Subject invention

A pneumatic flotation column comprising a housing with a bottom discharge cone B, an aerator, a loading nozzle and a foam collector, characterized in that.

that, in order to aggregate and extract magnetic minerals into the foam product, it is equipped with a magnetic system located on the outer side of the body in the zone of mineralization of bubbles.