COMPARATIVE STUDY OF GOLD EXTRACTION FROM REFRACTORY PYRITIC ORES THROUGH CONVENTIONAL LEACHING AND SIMULTANEOUS PRESSURE LEACHING/OXIDATION. GOLD EXTRACTION FROM REFRACTORY PYRITIC ORES THROUGH SIMULTANEOUS PRESSURE LEACHING/OXIDATION.

Título traducido de la contribución: Estudio Comparativo de la Extracción d eOro de Minerales Piríticos Refractarios utilizando Lixiviación Convencional y Simultánea Oxidación y Lixiviación a Presión

Jesus L Valenzuela, Maria Mercedes Salazar Campoy, Luis Sergio Quiroz-Castillo, Patricia Guerrero Germán, Martín Antonio Encinas Romero, Guillermo del Carmen Tiburcio Munive, Jose Refugio Parga Torres

Resultado de la investigación: Contribución a una revistaArtículo

Resumen

Pressure oxidation is a hydrometallurgical oxidative pretreatment for refractory ores, such as sulfide ores. Here, simultaneous alkaline pressure oxidation and sodium cyanide leaching treatments were carried out on a pyritic ore from the Mulatos Mine located in Sahuaripa, Sonora, Mexico. Mineral characterization, agitation leaching, hot cyanidation under atmospheric pressure conditions, simultaneous moderated pressure oxidation and leaching, and kinetic testing results are shown. The modified variables were temperature, pressure, and cyanide concentration. Characterization indicated that pyrite was the main mineral. Simultaneous pressure oxidation and leaching experiments were conducted at a temperature range of 40–80 °C, oxygen pressure of 87.5–200 psi, and cyanide concentration of 0.8–1.2 wt% in a 2-L Parr pressure reactor. A dissolution rate of 81–86% was achieved under the following conditions: 87.5 psi, 80 °C, 0.8 wt% NaCN, for 1 h.
Título traducido de la contribuciónEstudio Comparativo de la Extracción d eOro de Minerales Piríticos Refractarios utilizando Lixiviación Convencional y Simultánea Oxidación y Lixiviación a Presión
Idioma originalInglés
Número de artículodoi.org/10.1007/s42461-020-00217-6
Páginas (desde-hasta)1-6
Número de páginas6
PublicaciónMINING, METALLURGY AND EXPLORATION
Volumen2
N.º1
DOI
EstadoPublicada - 6 may 2020

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