Clean lowrankcoal purification technique
· The cyclonicstatic microbubble flotation column (FCSMC) is also a high efficiency flotation equipment for microfine lowrankcoal flotation. The schematic of the FCSMC is shown in Fig. 9. The FCSMC consists of a flotation column, cyclone separation zone, and pipe flow zone. Countercurrent mineralization was applied to generate highquality