Caracterización y alternativas de tratamiento de los concentrados gravimétricos en operaciones aluviales en la confluencia de los ríos Conguime y Nangaritza
The aim of this research work is to characterize the gravimetric concentrates obtained after having extracted the maximum amount of gold using conventional methods. These concentrates are obtained through the use of rudimentary equipment called "Zeta", which is used to concentrate free gol...
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| Format: | masterThesis |
| Language: | spa |
| Published: |
2023
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| Subjects: | |
| Online Access: | https://dspace.unl.edu.ec/jspui/handle/123456789/27643 |
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Add Tag | Summary: | The aim of this research work is to characterize the gravimetric concentrates obtained after having extracted the maximum amount of gold using conventional methods. These concentrates are obtained through the use of rudimentary equipment called "Zeta", which is used to concentrate free gold particles based on density difference between the alluvial materials found with it. The representative sample for this study was taken from the Aluvi concession located at the confluence of the Conguime and Nagaritza rivers in the Zamora province. In addition to characterizing the minerals contained in the processed (depleted) concentrates and the gold as well as looking for other metals of interest in the study material, such as rare earths and noble metals, given that these are high density materials, and in general, a characterization of the concentrate and its contents. There were no other valuable metals discovered. Additionally, we looked for appropriate suitable methods for a better use the gold in these depleted concentrates, for which we performed ICP-MS analysis, X-ray fluorescence, X-ray diffraction, direct leaching tests, solution with atomic absorption readings, fire assay, granulometric study, etc. Theses studies were carried out in order to determine the mineralogical characteristics of the sample, its behavior, and to recover the maximum amount of gold in the final residue, in such a way that the metallic contents are exploited to the maximum, and also to propose not only the most adequate method but also to recommend the equipment for an efficient, clean and fast process. According to the results of the various analyses it is concluded that the only metal or mineral of interest is gold, which was found to be free. This allowed for maximum recovery through agitation leaching using sodium cyanide, with sufficient kinetics to ensure that the gold in the sample was almost completely leached in 24 hours of agitation using the bottle test. Keywords: Free gold, heavy metals, recovery, concentrates, concentration. |
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