... ia applied to crush the coal gangue, shale, mine slag, construction waste,and the grain-size reach to below 3mm,which make the crushing ... slag is inclined to block the screen, and is not convenient to operation.2. the grain-size is not united to follow the proportion of crushing ... is below 3mm, above 2mm 80%.5. wearing term hammerhigh alloy wear nutation. Hammer head and hammer handle can combined,we ...