May 22, 2017 . Metallurgist & Mineral Processing Engineer Logo . Operation of crushing plants, rod mills and ball mills is understood by many, . The attraction of semi autogenous grinding in copper operations is that they can accommodate ores that are . in the testing of ores, sizing of machines and in proper operation.
Apr 11, 2017 . The milling of copper ores as practiced in the larger concentrators has changed to such an extent that comparatively few of the machines in use at the . the development of pebble mill grinding, the substitution of balls for pebbles, . grinding methods which produced considerable copper minerals too finely.
A mill is a device that breaks solid materials into smaller pieces by grinding, crushing, or cutting . The grinding of solid materials occurs through mechanical forces that break up the .. Rod mills are less common than ball mills for grinding minerals. . SAG mills are primarily used at gold, copper and platinum mines with.