Refractoriness of gold concentrates

• Autores: Arias Arce, Vladimir, Coronado Falcón, Rosa, Puente Santibañez, Luis, Lovera Dávila, Daniel
• Formato: artículo
• Fecha de Publicación: 2005
• Institución: Universidad Nacional Mayor de San Marcos
• Repositorio: Revista UNMSM - IIGEO
• Lenguaje: español
• OAI Identifier: oai:ojs.csi.unmsm:article/493
• Enlace del recurso: https://revistasinvestigacion.unmsm.edu.pe/index.php/iigeo/article/view/493
• Nivel de acceso: acceso abierto
• Materia: gold; concentrated refractory; microscopic gold; treatment of concentrated; pirometallurgy; hidrometallurgy; Mineral de oro refractario; concentrados refractarios; oro microscópico; tratamiento de concentrados; pirometalurgia; hidrometalurgia

In the extraction and purification of precious metals diverse techniques gravimetric, pyrochemical, hidrochemical, electrochemical are used main to ore sulfides or complex sulfides that contain concealed gold or microscopic gold. The influence of the pyrite presence, copper minerals, that they slow down, they inhibit and /or the transformation metallic gold in solution, they manage to attenuate themselves or to be reduced by means of other necessary treatments that they complement to the cyaniding process, those that can be cycles of roasting, watery leachings with basic acid solutions or under controlled conditions of pressure and temperature, electro oxidation under electrical potential, sequences of ultrasound and by means of the bacterial leaching.