Flash Flotation Cell

Last crawled date: 4 years, 1 month ago

As valuable minerals are soft in comparison to the host rock, with a significantly higher solids density, they tend to concentrate in the re-circulating load of the grinding circuit. This can lead to the over-grinding of the valuable minerals until they report to the cyclone overflow, which in turn can lead to lower recoveries in the flotation circuit. In comparison, the flotation conditions are significantly better in the cyclone underflow stream than in the cyclone overflow (flotation feed) due to the presence of fast-floating liberated particles in this stream. The cyclone underflow particles also tend to have cleaner, less oxidised surfaces and are not too fine for flotation (i.e. less slimes). Therefore, installing a specially designed flotation cell in the grinding circuit can significantly improve plant performance. The feed to the flash flotation cell comes from a distribution box which splits the cyclone underflow. Typically, one-half to two-thirds of the cyclone underflow stream is diverted into the Flash Cell, with the remainder of the stream returning to the mill feed. Dilution water is also added to the feed to reduce the solids density to approximately 65%. Although optimal flotation performance is at a lower solids density, this would require more dilution water, and as the majority of feed reports to the tailings, the additional water returns to the mill, reducing the mill throughput. #bottom_utlet #celda_de_flotacion #cell #clasificacion #classification #concentrate_launder #conical_baffle_plate #drive_shaft #driveshaft #feed_inlet #flash_flotation #flotacion #flotation #froth_outlet #mineral #minerales #motor #OF #OF_concentrate_launder #overgrinding #procesamiento_de_minerales #processing #rotor #side_outlet #stator #tank