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Ultra Fine Grinding - A Practical Alternative to Oxidative Treatment of Refractory Gold Ores S. Ellis Kalgoorlie Consolidated Gold Mines Kalgoorlie, WA. Abstract Since early 2001, Kalgoorlie Consolidated Gold Mines (KCGM) has successfully ... Figure 1 Pyrite Locked Gold Within an Ore

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Ultra Fine Grinding Gold Ore Introduction The refractory nature of gold ores is often associated with gold finely disseminated in sulphide minerals, such as pyrite, at conventional grind sizes.

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The effect of surface oxidation of copper sulfide minerals ...

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Mill (grinding) - Wikipedia

A typical type of fine grinder is the ball mill. ... Autogenous or autogenic mills are so-called due to the self-grinding of the ore: a rotating drum throws larger rocks of ore in a cascading motion which causes impact breakage of larger rocks and compressive grinding of finer particles. ... arrastra, simple mill for grinding and pulverizing ...