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  • Mill (grinding) Wikipedia

    A mill is a device that breaks solid materials into smaller pieces by grinding, crushing, or cutting . increase of the surface area of a solid; manufacturing of a solid with a desired .. SAG mills are autogenous mills but use grinding balls like a ball mill. . SAG mills are primarily used at gold, copper and platinum mines with.

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  • Ball mill Wikipedia

    A ball mill is a type of grinder used to grind and blend materials for use in mineral dressing . A ball mill, a type of grinder, is a cylindrical device used in grinding (or .. In situ leaching · Gold chlorination · Gold cyanidation · Bayer process.

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