Autogenous Grinding Semi Autogenous Grinding Circuits 911 Metallurgist
The grinding media in these mills are rock pebbles of suitable size (3″ to 6″) screened out of the intermediate crushing circuit. c. Secondary autogenous mills (or secondary pebble mills) which process a coarse ground product. (4 to 14 mesh; or, finer) obtained from rod mills or from primary or intermediate autogenous mills.