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    Gold extraction refers to the processes required to extract gold from its ores.This may require a combination of comminution, mineral processing, hydrometallurgical, and pyrometallurgical processes to be performed on the ore.. Gold mining from alluvium ores was once achieved by techniques associated with placer mining such as simple gold …

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    Modeling of gold cyanidation Master of Science (Technology) Thesis 2008 ... Figure 9 The effect of pH on gold extraction. Condition: 20% solid, 0.6 MPa,

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