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Ball Milling Method Merits Quartz Rock Crusher

Arastrra milling methods of californai and arizona,To extract the gold from quartz vein material, the rock must be crushed. historically, quartz was pulverized either in an arastra, or chilean mill, or by stamps. In modern times, ball mills are used. this article principally discusses the arastra, the oldest rock crusher that had general use.

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