Análisis comparativo de lixiviación con cianuro de sodio y el agente lixiviante jinchan en el mineral procedente del área minera Las Paralelas

The present research work aims to determine the efficiency in gold dissolution through the comparison between the most common leaching agent such as sodium cyanide, which has been used for gold recovery, and the Jinchan leaching agent (carbonized sodium cyanurate plus thiourea). The tests in the hydrometallurgical leaching process with both agents were carried out at laboratory scale using 4 representative samples from different veins of the Las Paralelas mine, which were tested with the aforementioned leaching agents. Initially, the ore grade was determined metallurgically by fire assay and within the main operational parameters of laboratory leaching, the following were considered: concentration of leaching agents, pH controls, mechanical agitation speed, temperature, reaction times, percentage of solids, granulometry -200 mesh, in a time of 28 to 30 hours; with the purpose of obtaining the dissolution kinetics for the evaluation of the effectiveness in the leaching process and its respective consumptions. The mineral presented the following recovery percentages: for the sample MPA01-VS, the leaching agent Jinchan was more effective in the process with a dissolution rate of 64.09% with respect to the Sodium Cyanide that obtained 64.80%, likewise the cyanide consumption was higher with 3.20 g, while Jinchan consumed 2.80 g, and the lime consumption was higher for the process with cyanide with 6.10 g and lower for Jinchan with 5.50 g. The test performed on sample MPA02-X2 AT, the most effective dissolution percentage in the process was for Jinchan with 90.28% while Sodium Cyanide obtained a dissolution rate of 88. 98%, the consumption of leaching reagent in the sample, was higher for the Sodium Cyanide with 3 g, and a consumption of 2.75 g for the Jinchan, the lime consumptions are located in higher proportion for the treatment with Sodium Cyanide with 5.8 g and lower a lower consumption of 5.20 g for the Jinchan. In the sample MPA03-X7P, the Jinchan leaching agent was more effective in the process with a dissolution rate of 34.60% with respect to the Sodium Cyanide that obtained 34.16 %, likewise the consumption of Sodium Cyanide was higher with 3.40 g, while the consumption of Jinchan registered 2.90 g, and the lime consumption was higher for the process with Sodium Cyanide with 6.50 g and lower for the Jinchan with 5.80 g. For the tested sample MPA04-X7(2), the leaching agent Jinchan was more effective in the process with a dissolution rate of 94.47% with respect to Sodium Cyanide which obtained 92.17%; the consumption of Sodium Cyanide was higher with 2.85 g, while Jinchan consumed 2.56g, as for the lime consumption was higher for the process with Sodium Cyanide with 5.60 g and lower for Jinchan with 5.10 g. Key words: leaching, mechanical agitation, fire test, Sodium Cyanide, Jinchan.

• Autor principal: Buri Flores, Vladimir Alexander (author)
• Format: masterThesis
• Idioma: spa
• Publicat: 2023
• Matèries: <LIXIVIACIÓN> < AGITACIÓN MECÁNICA> < ENSAYO AL FUEGO> < CIANURO DE SODIO> < JINCHAN>
• Accés en línia: https://dspace.unl.edu.ec/jspui/handle/123456789/26943