A mill is a device that breaks solid materials into smaller pieces by grinding, crushing, or cutting .. Ball mills normally operate with an approximate ball charge of 30%. Ball mills are . SAG mills are primarily used at gold, copper and platinum mines with applications also in the lead, zinc, silver, alumina and nickel industries.
A ball mill is a type of grinder used to grind, blend and sometimes for mixing of materials for use . The ball mill can grind various ores and other materials either wet or dry. There are two kinds of ball .. Iron smelting · Lead smelting · Zinc smelting · Flash smelting · ISASMELT furnace; Refractory linings · Refining · Cupellation.