Figure 2 shows the line diagram used for the pilot-scale processing. Fine coal
waste and binder from the tank was passed to the screw mixer. The mixture was
transported to the central tank, where the screw conveyor fed the press roller. Separated
briquettes were transported by a drying conveyor to the drying chamber. Any
separated fines were recycled by reverse conveyor to the stacker of the briquetting
unit. Dried and cooled samples were transported by container or big-bag. Axisymmetric,
flattened, barrel-shape briquettes were obtained, each with a volume of about
50 cm3(Figure 3). The briquettes were then dried and cured.