Horizontal/Tube/Ball Mill | Shri BalajiRod Mill. A rotating drum causes friction and attrition between steel rods and ore particles. Rod mills are less common than ball mills for grinding minerals. Ball Mill. Ball Mills are typically used in secondary grinding, after the primary grinding in AG/ SAG Mills. AG/ Autogenous Mill. Autogenous or autogenic mills are so-called.sag and bowl mill manufacturers in india,Liners | Shri BalajiTypically, SAG mill liners are supplied in Cr-Mo specification and in a profile, where maximum lift is available to HCGM for effective crushing. In the secondary grinding, where ball mills are used, liners in White Iron/ Hi-chromium are supplied. SBIPL supplied liners which are most wear resistant, owing to the abrasive nature.