Merits and Demerits and Working Principles of Bubble-Column Machine

Bubble-column machine is also widely called as flotation column. It is used for separating ferrous and non-ferrous metals. It can also be used for separating non-metals like coal and fluorite. The impeller of the principal axis rotates by the drive of electric motor through the V belt and then produces centrifugal function resulting in negative pressure.

Many dressing plant after the test and research has been used in all kinds of flotation work, and good results were obtained, in some flotation process can basic instead of mechanical flotation machine or with some other type flotation machine joint use. At present most is the flotation column used in roughing operation, and in the selected operation is not applicable. Mainly is the flotation concentrate quality and recovery are as flotation machine, especially the concentrate quality. Column type flotation machine work, will pulp join flotation reagents for strong agitation, the center feed device into the column. Due to the pulp of the action of gravity, from the column slow down. Compressed air after aeration device dispersion into a large number of tiny bubbles and evenly distributed in the column of the whole section and slowly rising. The pulp and bubbling convection movement. In this case, the part of the buoyant mineral adherent to the bubble and rise to pulp top form mineralization bubble. From the foam flow channel to overflow or scraper will foam scrape, namely for concentrate. The other part does not float of gangue can't attached to the bubble, from tailings lifting device discharge or into the next job processing, namely for tailings.

Column type flotation machine characteristic is: is simple in structure, manufacture easy installation, production, easy maintenance, save power, cover an area of an area small, capital cost is low, the fast.

But the column type flotation machine also has its weakness: mainly aeration device easy knot calcium and jam, work is not stable. It is worth...