Abstract:In this research, the process of gold and silver extraction from a refractory gold-silver sulfide ore, sourced from the Gran Chimú Province in the La Libertad department of Peru, was evaluated. The extraction was carried out in two stages, the first being called indirect bio-oxidation, and the second involving conventional cyanidation. In the first stage, an acidic solution from the area was used to cultivate Thiobacillus ferrooxidans bacteria, which was promoted by the addition of salts (9K). The objective of… Show more
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