Mill (grinding) - WikipediaA mill is a device that breaks solid materials into smaller pieces by grinding, crushing, or cutting. Such comminution is an important unit operation in many processes. . In stirred mills, the Hukki relationship does not apply and instead, .. material inside the mill, where it then falls off the plates onto the rest of the ore charge.how much does a miller for grinding ores cost,Gold : prices, facts, figures & research : Abundance, properties .The energy required to heave, grind and process ore is itself valuable and places a . So gold ore needs to be concentrated by about 1,000 times above the average to . The cheaper first stage of purification is the Miller process which uses.
how much does a miller for grinding ores cost