Grinder Mill, Mining Equipment, AG Autogenous Grinding Mineral Processing & MetallurgyAutogenous Grinding Explained. Mill length was the primary variable investigated in an autogenous pilot mill circuit. The 5-½’ diameter mill had both pebble ports and ½” wide slotted grates. The plus ½” mill product was crushed in a cone crusher and returned to the mill feed along with the minus ½” plus 4 or 6 mesh fraction. TestsGet PriceNew & Used Sag Mills for Sale Semi-Autogenous GrindingSAG is an acronym for Semi-Autogenous Grinding. SAG mills are essentially autogenous mills, but utilize grinding balls to aid in grinding like in a ball mill. A SAG mill is generally used as a primary or first stage grinding solution. Attrition between grinding balls and ore particles causes grinding of finer particles. SAG mills areGet PriceGrinding mills MetsoEvery mining operation has a unique grinding process. Variable needs require versatile grinding equipment. Metso offers flexible autogenous (AG) mills, semi-autogenous (SAG) mills, ball and pebble mills, as well as stirred mills to fit your needs.Get PriceAG mills for Sino Iron Project Australian Mining2007-11-26· THE Siemens Industrial Solutions and Services Group (I&S) is supplying gearless drive systems for five 40-foot autogenous grinding mills for the Sino Iron project in the Pillbara.Get PriceAutogenous & Semi-Autogenous Grinding CircuitsTable of Contents Autogenous Grinding CircuitsSAG vs Ball Mill AdvantagesAG & SAG Mill Grinding Compared Which is BestTesting for Product Size Size reduction is the most expensive operation in most mills. 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