Cyanide Consumption of a Gold-Bearing Pyrite Concentrate, using Ozone as a Pre-Treatment

Authors

  • Carolina Rodriguez-Rodriguez UNIVERSIDAD DE GUANAJUATO
  • Gabriela Salas-Puente Universidad de Guanajuato
  • Juan Carlos Baltazar-Vera Universidad de Guanajuato
  • Joel Everardo Valtierra-Olivares Universidad Autónoma de Zacatecas
  • Omero Alonso-Gonzalez Universidad Autónoma de Zacatecas

DOI:

https://doi.org/10.36790/epistemus.v15i31.194

Keywords:

Gold-bearing pyrite, refractory ores, cyanidation, ozone

Abstract

Pyrite (FeS2), is the second most common host mineral for gold species. This association presents a great complexity, due to the gold can be finely disseminated or included at very fine size (0.1 to 1.0 µm), which requires extreme crushing conditions and strong oxidation in order to, liberate the gold, in a subsequent cyanidation step. In this work, cyanide consumption was evaluated, when a gold-bearing pyrite concentrate is submitted to a pretreatment with ozone prior to the conventional cyanidation.  Tests were carried out at two different cyanide concentrations (1000 and 3000 ppm of CN)-, for a gold pyrite concentrate (67.44% of FeS2), where a significant decrease in cyanide consumption of 54% and 69% was found, when the mineral is submitted to an ozone treatment before cyanidation. These findings suggest that the use of ozone increases silver recovery and generates significant environmental impact.  

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References

SGM, Anuario Estadístico de la Minería Mexicana Ampliado 2019, Servicio Geológico Mexicano (SGM), 2020.

Bustos R., H., Oyola L., D., Rojas M., A., Pérez A., G. A., Balogh, A. G. (2011). Cuantificación de oro refractario en granos de pirita y arsenopirita de la mina de oro “El Diamante” en Nariño - Colombia. Revista Tumbaga, 6, 153-164.

Habashi, F. (2006). Pyrite: The Strategic Mineral That became an industrial Nuisance. De re Metallica, 6 (7), 43-58.

Arias-Arce V., Coronado-Falcon, R., Puentes-Santibáñez, L., Lovera-Dávila, D. (2005). Refractariedad de concentrados auríferos. Revista del Instituto de Investigación, 8(16), 5-14. https://doi.org/10.15381/iigeo.v8i16.493

Coronado, J. H., Encinas, M. A., Leyva, J. C., Valenzuela, J. L., Valenzuela, A., Minive, G. T. (2012). Tostación de un concentrado de refractario de oro y plata. Revista de Metalurgia., 48(3), 165-174. https://doi.org/10.3989/revmetalm.1102 DOI: https://doi.org/10.3989/revmetalm.1102

Iglesias, N., Carranza, F., Palencia, P., (1997). La biolixiviación como pretratamiento de menas auríferas refractarias en matriz de sulfuros. Revista de Metalurgia, 34 (1), 29-38. https://doi.org/10.3989/revmetalm.1998.v34.i1.656 DOI: https://doi.org/10.3989/revmetalm.1998.v34.i1.656

Gavino, J. P. (2018). Tratamiento por flotación y cianuración de minerales auríferos con presencia de pirita para la concentración y extracción de oro y plata a nivel experimental (tesis de pregrado). Facultad de Ingeniería Química y Metalúrgica., Huacho, Perú.

Flatt, J.R, Wood, R. (1995). A voltametric investigation of the oxidation of pyrite in nitric acid solutions: relation to treatment of refractory gold ores. Journal of applied electrochemistry, 25, 882-856. https://doi.org/10.1007/BF00233904 DOI: https://doi.org/10.1007/BF00772204

Morera, J. (2004). Lixiviación de metales con ozono acuoso. Cinética de la plata y el oro: aplicaciones (tesis de pregrado). Universidad de Barcelona, España.

Uribe, A. S. (2002). Precipitación química de metales de sus soluciones. U. S. Centro de Investigación y de Estudios Avanzados. Guanajuato, Guanajuato: 1-15.

Published

2022-04-01

How to Cite

Rodriguez-Rodriguez, C. de J., Salas-Puente, G., Baltazar-Vera, J. C., Valtierra-Olivares, J. E., & Alonso-Gonzalez, O. (2022). Cyanide Consumption of a Gold-Bearing Pyrite Concentrate, using Ozone as a Pre-Treatment. EPISTEMUS, 15(31), 38–43. https://doi.org/10.36790/epistemus.v15i31.194

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