Features:1.large application range, simple structure and convenient maintenance;2.large capacity and continuous work are very obvious;3.barrel lining and grinding media can apply various abrasive materials;4.installation and adjustment are very convenient and easy to be operated.Working principle: this machine is a skeleton pattern ball mill with horizontal cylindrical turning gear, driving by outer gear and two hoppers. The material goes to the first hopper after the spiraling by the quill shaft from the feeding equipment. The hopper has ladder sheathing or corrugated sheathing with steel balls inside, which will fall under the effect of centrifugal force by barrel turning to ram hard and grind material. After the kibbling in the first hopper, by monolayer partition panel, the material will enter the second hopper, which has plane scale board with steel ball inside to grind material. The powder material will be discharged from the grid plate to finish the grinding.Dry or wet ball mill will be optional according to material and ore-discharging mode.