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%. .. arrastra, simple mill for grinding and pulverizing (typically) gold or silver ore. roller mill, an equipment for the grinding or pulverizing of grain and other raw.
Jun 18, 2016 . Wet Pan Mill is used very well in the South Africa, especially in gold ore mining industry. It can grind gold rock ore into about 200mesh. . mill is not expensive, which is compared with ball mill, so that wet pan mill is suitable for.