... device 3.Reliable performacne The advantages of coal gangue crushing machine for brick production line:1.To increase production, as well as ... wet and hard materials such as coal slack,shale,cinder, construction waste,slag,furnace slag,cement,refractories, heat insulating materials,etc ... and down, there is no screen and grate, the wet material can’t be blocked up. 2.Wear-resistant combination hammerhead ...