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The AG/SAG mills are utilized to grind run of mine rock or primary crusher discharge. . Mill speed is adjusted by changing the frequency of the current to the motor; LSS motors and GMD motors can be used to inch the mill during plant down times to prevent lock charges, and to maneuver the mill for liner changes.
Oct 1, 2017 . AG/SAG mills grind ore through impact breakage, attrition breakage, and abrasion of the ore serving as media. Autogenous circuits require an ore of suitable competency (or fractions within the ore of suitable competency) to serve as media. SAG circuits may employ low to relatively high ball charges.