Bio-Oxidation Process of a Polymetallic Sulfide Mineral Concentrate for Silver Recovery DOI Open Access
M.A. Martell-Nevárez, Luís Medina‐Torres,

Francisco Javier Ríos-Fránquez

et al.

Minerals, Journal Year: 2025, Volume and Issue: 15(3), P. 261 - 261

Published: March 2, 2025

In this research, the bio-oxidative capacity of three acidophilic bacterial strains (Acidithiobacillus thiooxidans, Leptospirillum ferriphilum, and an unidentified native consortium) are analyzed through dissolution cyanicidal species in a polymetallic sulfide mineral mainly composed pyrite, quartz, sphalerite, chalcocite. The main objective is reduction amount sodium cyanide used for recovery Au Ag improvement economic environmental benefits processing these minerals. Additionally, 23 factorial experimental design, effect pH pulp density (%) on bio-oxidation evaluated. results reveal that process concentrate has been favored at low values density, favoring Cu above all dissolution, which form stable complexes with cyanide, leading to excessive consumption. Therefore, = 1.0 10%, catalytic activity Acidithiobacillus thiooxidans achieves 73.30% Cu, 19.92% Pb, 57.37% Zn, 25.17% Fe flask level 83.18% 12.18% 55.36% 40.98% bioreactor level, allowing 89.5% 80.4% Ag, respectively.

Language: Английский

Bio-Oxidation Process of a Polymetallic Sulfide Mineral Concentrate for Silver Recovery DOI Open Access
M.A. Martell-Nevárez, Luís Medina‐Torres,

Francisco Javier Ríos-Fránquez

et al.

Minerals, Journal Year: 2025, Volume and Issue: 15(3), P. 261 - 261

Published: March 2, 2025

In this research, the bio-oxidative capacity of three acidophilic bacterial strains (Acidithiobacillus thiooxidans, Leptospirillum ferriphilum, and an unidentified native consortium) are analyzed through dissolution cyanicidal species in a polymetallic sulfide mineral mainly composed pyrite, quartz, sphalerite, chalcocite. The main objective is reduction amount sodium cyanide used for recovery Au Ag improvement economic environmental benefits processing these minerals. Additionally, 23 factorial experimental design, effect pH pulp density (%) on bio-oxidation evaluated. results reveal that process concentrate has been favored at low values density, favoring Cu above all dissolution, which form stable complexes with cyanide, leading to excessive consumption. Therefore, = 1.0 10%, catalytic activity Acidithiobacillus thiooxidans achieves 73.30% Cu, 19.92% Pb, 57.37% Zn, 25.17% Fe flask level 83.18% 12.18% 55.36% 40.98% bioreactor level, allowing 89.5% 80.4% Ag, respectively.

Language: Английский

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