A ball mill is a type of grinder used to grind and blend materials for use in mineral dressing . revolution and the invention of steam power that an effective ball milling machine could be built. .. Lixiviant · Heap leaching · Dump leaching · Tank leaching · In situ leaching · Gold chlorination · Gold cyanidation · Bayer process.
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. . 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.