Producción Científica Profesorado

Electrochemical deposition of silver and gold from cyanide leaching solutions



Reyes Cruz, Victor Esteban

2002

V. Reyes-Cruz, C. Ponce de León, I. González, and M. T. Oropeza Electrochemical deposition of silver and gold from cyanide leaching solutions, Hydrometallurgy 65/2-3 (2002) 187. DOI: http://dx.doi.org/10.1016/S0304-386X(02)00083-X


Abstract


A systematic voltammetric study developed in this work allows the determination of the potential range at which the selective deposition of gold and silver is carried out in the presence of a high content of copper. As a first approach, laboratory solutions prepared with a high content of cyanide and copper and low values of gold and silver are used; later, the methodology is applied to leaching solutions of industrial origin.The chemical speciation and microelectrolysis studies showed that copper deposition occurs at more negative potentials than deposition of gold and silver. Also, the voltammetric study of a cyanide solution containing low concentrations of Au(I) and Ag(I), free of and with high concentration of Cu(I) was carried out. The study shows the potential range at which Au(I) and Ag(I) are reduced despite the high concentration of the Cu(I) ions. The deposition of gold and silver was not interfered with by the high concentration of Cu(I) ions when the leaching solution was electrolyzed in a laboratory electrochemical reactor FM01-LC with a reticulated vitreous carbon (RVC) cathode.



Producto de Investigación




Artículos relacionados

Corrosión de acero al carbono en una solución tipo NACE TM 0177 y NACE ID 196 en presencia de hidroc...

Corrosión de acero SAE 1018 en aguas amargas colectadas de la industria del petróleo: efecto de la ...

Corrosion of Carbon Steel in Presence of Hydrocarbon

Voltammetric evaluation of the electrode material on the oxidation of cyanide catalyzed by copper io...

Evaluación de a-Diiminas como inhibidores de corrosión: efecto de la ruta de síntesis

Corrosión de acero SAE 1018 en aguas amargas colectadas de la industria del petróleo: efecto de la t...

Efecto de la corrosión en acero al carbono en aguas industriales: variación del pH

ESTUDIO COMPARATIVO Y CARACTERIZACIÓN DE CAOLINES COMERCIALES DISPONIBLES EN LA ZONA DE PACHUCA, HID...

Síntesis de nanocompositos de ZrO2 nanotubos de carbono- Mo

Recuperación de plata proveniente de placas radiográficas utilizando un reactor electroquímico tipo ...