40 foot autogenous grinding mills
Jul 18, 202240 foot autogenous grinding mills Know More. Following the SAG mill will be two 9,000hp ball mills, each one 20ft in diam and, up to 1ft diam, to a primary, or semiautogenous grinding mill SAG, Figure 1,, a 43ft ring gear had never been made due to a 40ft limitation in gear tooth ....