Flotation column device

Abstract

The invention relates to mineral separation equipment, and discloses a flotation column device. The flotation column device comprises a different-diameter flotation column and a jet flow mineralization system used for supplying mineral pulp to the different-diameter flotation column; the different-diameter flotation column comprises an upper cylindrical section and a lower cylindrical section withthe diameter being smaller than that of the upper cylindrical section; the upper cylindrical section and the lower cylindrical section are connected through a conical transition section, and the lower cylindrical section is connected with a bottom conical section; a bubble collecting tank is arranged on the outer side of the upper end of the upper cylindrical section and connected with a bubble collecting pipe; and a tailing collecting pipe is arranged on the lower part of the bottom conical section. According to the flotation column device, colliding and adhesion of particles and bubbles areachieved in an appropriate turbulent environment; in a relatively-static fluid environment and under the large column body diameter, deadhesion of the coarse particles is reduced advantageously, meanwhile separation of useful minerals from gangue minerals is improved, and thus the separation efficiency is effectively improved; and the flotation column device has the advantages of being small in floor space, low in energy consumption and good in separation effect.

Description

technical field [0001] The invention belongs to mineral separation equipment, in particular to a flotation column device. Background technique [0002] The flotation column is an inflatable flotation machine that passes compressed air through a porous medium (aerator) to inflate and stir the pulp. There are microbubble countercurrent flotation columns and microbubble jet flotation columns. [0003] The flotation column is an important equipment for mineral flotation separation. It has the advantages of no mechanical stirring device, simple structure, small footprint, and low energy consumption. However, the main disadvantage of the flotation column is that the column is too high. Since the jet flotation column separates the mineralization system and the separation system independently, the height of the flotation column body is greatly reduced. The ore feeding point of the jet flotation column is usually set in the lower half of the column body. The flow rate of the slurry ...

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Problems solved by technology

[0006] Similarly, the Chinese Utility Model Patent Application No. 201720642570.X discloses a variable-diameter flotation column with fillers, which is composed of multi-section flotation columns with gradually reduced diameters from top to bottom. The two adjacent subsection flotation columns are connected by variable diameter sections, and the sweeping section, rough selection section and fine selection section can be realized in one flotation column, but, similarly, the The device is a static flotation column type device, and the height of the column is relatively high

[0007] The existing jet flotation columns are all straight cylinders. When the turbulent flow at the lower end of the column is high, it is beneficial to the collision and adhesion of particles and bubbles, but it will also have a certain negative impact on the flow field at the upper end of the column.

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