A ball mill is a type of grinder used to grind and blend materials for use in mineral dressing . The ball mill can grind various ores and other materials either wet or dry. There are . Some media, such as iron, may react with corrosive materials.
A mill is a device that breaks solid materials into smaller pieces by grinding, crushing, or cutting .. SAG mills are autogenous mills but use grinding balls like a ball mill. . SAG mills are primarily used at gold, copper and platinum mines with . May be used where product contamination by iron from steel balls must be avoided.