Rod mill is widely used grinding machine to grind all kinds of ore and rocks in metal and nonmetal mining, water conservation, building materials, sand making industry and so on. The rod mill is composed by the cylinder part, feeding part, discharging part, main bearing part and driving part, which is similar with the other mills. In mining industry, this machine also can be called rod miller. It has a good performance in the grinding fields. Our rod miller is especially suitable for crushing river gravel to make sand. Rod miller is a kind of effective and energy saving rod grinding machine. Moreover, according to different materials and discharging methods, there are dry rod miller and wet type rod miller for choice.