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The processing techniques can include grinding, concentration, ... Scotland, developed the MacArthur-Forrest Process for the extraction of gold ores.

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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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Ore processing consists of the following stages: crushing and grinding of the ore; addition of process water (generally decanted from the tailings pond) to form a slurry

Problem with gold recovery from sulphide ore: How may a mill get the maximum recovery of gold from a sulphide ore, at the least capital cost and at the same time ...