According to the cylinder shape is cylindrical and conical ball mill can be divided into two kinds. Cone mill produced at present, the domestic has very few, so in fact the main manufacturing cylindrical grinding machine, which include short cylinder and tube. Short cylindrical grinding machine simplified the ratio of length to diameter of less than 1, since the mill is belong to this type; Tube mill (hereinafter referred to as tube mill) simplified the ratio of length and diameter greater than 2. Portland cement mill which belong to this type.

According to the row way ore grinding machine is mainly can be divided into 3 types: (1) the overflow type milling machine: by the row of ore grinding side hollow shaft neck free overflow; (2) the grate ball mill: the grinding in the porosity of the row of the grating on mine after row m, then through a hollow shaft neck outflow; (3) the surrounding type ball mill: by row ore grinding away L gap surrounding the end simplified cm. In addition, there is the open mouth rod mill low row ore way and dry wind when grinding ore.