There are two kinds of ball mills, grate type and over fall type due to different ways of discharging material. The ball mill is a key equipment for grinding materials, widely used in powder-making production line such as cement, silicate sand, new-type building material, refractory material, fertilizer, ore dressing of ferrous metal and non-ferrous metal, glass ceramics, etc. Ball mill can grind various ores and materials with dry type or wet type. This machine is a skeleton pattern ball mill with horizontal cylindrical turning gear, driven by outer gear and two hoppers.

The material goes to the first hopper after the spiraling by the quill shaft from the feeding equipment. 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 hopper has ladder sheathing or corrugated sheathing with steel balls inside, which will fall under the effect of centrifugal force by barrel and grind material. The powder material will be discharged from the grid plate to finish the grinding.