Experimental study of a new and efficient separator for fine coal desulfurization

It is very difficult to remove sulfur and ash from fine coal. The froth flotation is not efficient in desulfarization because of the low rate of sulfide liberation from raw coal, the natural hydrophobicity caused by sulfur concentration on the surface of sulfide, and the presence of large amounts of middling feed. An efficient centrifugal gravity Falcon separator and Krebs Cyclone were employed to remove sulfur and ash from -0.5 mm coal. Comparing with the coal flotation using progressive release method, the actual performance of the Falcon separator has been obtained, providing a new method for fine coal cleaning and desulfurization.