Carbonaceous Ore Characterization and the Identification of the Preg-Robbing Effect

Authors

  • Marlen Gómez Santiago Instituto de Investigación en Metalurgia y Materiales, Universidad Michoacana de San Nicolás de Hidalgo https://orcid.org/0000-0003-1223-9847
  • Diana Cholico-González CONACYT-Universidad Michoacana de San Nicolás de Hidalgo https://orcid.org/0000-0002-7164-0799
  • Noemi Ortiz Lara CONACYT- Instituto de Investigación en Metalurgia y Materiales, Universidad Michoacana de San Nicolás de Hidalgo https://orcid.org/0000-0002-3545-4059
  • Ramiro Escudero García Instituto de Investigación en Metalurgia y Materiales, Universidad Michoacana de San Nicolás de Hidalgo https://orcid.org/0000-0003-1635-8421

DOI:

https://doi.org/10.36790/epistemus.v16i32.205

Keywords:

carbonaceous mineral, preg-robbing effect, Au(CN)2-, adsoprtion

Abstract

The processing of refractory minerals by conventional methods results in poor gold recoveries, being a cause the preg-robbing effect when the adsorption of the complex Au(CN)2-  occurs on the surface of carbonaceous matter during leaching. It is then necessary to characterize mineralogically and identify the carbonaceous matter to establish the complexity of the mineral. Subsequently, the degree of preg-robbing must be evaluated to design the processing and recover the maximum of the trapped precious metal. Thus, a carbonaceous mineral was characterized by XRD and infrared spectroscopy, in addition to evaluating the mineral Au(CN)2- adsorption capacity. By XRD, calcite, and quartz species were identified; by infrared spectroscopy, the characteristic bands of Ca-O, C-O, Si-O and C=C associated with carbonaceous matter; from the adsorption capacity, a value q = 0.198 was determined mg Au(CN)2-/gmineral, which corresponds to 70% of Au(CN)2- adsorbed, in such a way that the mineral is classified as preg-robbing

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References

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Published

2022-04-21

How to Cite

Gómez Santiago, M., Cholico-González, D., Ortiz Lara, N., & Escudero García, R. (2022). Carbonaceous Ore Characterization and the Identification of the Preg-Robbing Effect. EPISTEMUS, 16(32), 34–41. https://doi.org/10.36790/epistemus.v16i32.205

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