FG-2000 Single screw Classifier(one meter longer)Operating instructionⅠ, ... , coarse particles sink to bottom, by the screw pushing into the upper and return to grinding machine ... overflow weir, coarse mineral particles conveyor from the screw first to discharge port.③ Cell: Welded by steel ... supporting, and to minimize the shear stress of ground screw, transmission should be smooth, no impact phenomenon, ...