Análisis comparativo para la refinación de oro con el uso de ácido nítrico y la adhesión de Ag y Cu como optimizadores del proceso metalúrgico

Abstract

Abstract: The present study provides information on the gold refining process by the method attack with HNO3, prior to framing with silver and copper; contributing to the application and dissemination of methodologies to obtain better purity of the final metal, thus providing greater economic benefits for primary producers. It must be recognized theoretically main methods of gold refining through the application of acids, this includes basic process diagrams. The practical application method of this research is that of nitric acid, for this we started from an initial gold-bearing metallic sample from the Bella Rica Mining District; Given its high cost, the investigation was restricted to two tests on a laboratory scale. A comparison of the results of the quartering was carried out of the metal with the adhesion of silver and copper independently, a final purity was reached of 99.5% with an efficiency of 94.13% for the encuatarte process with silver 99.02% and an efficiency of 92.25% for the copper pickling process.