Journals →  Eurasian Mining →  2022 →  #1 →  Back

ArticleName Influence of ore processing behavior on heap-leach cyanidation and agitation leaching efficiency
DOI 10.7580/em.2022.01.11
ArticleAuthor Fedotov P. K., Senchenko A. E., Fedotov K. V., Burdonov A. E.

Irkutsk National Research Technical University, Irkutsk, Russia:

Fedotov P. K., Professor, Doctor of Engineering Sciences,
Fedotov K. V., Head of Department, Professor, Doctor of Engineering Sciences
Burdonov A. E., Associate Professor, Candidate of Engineering Sciences

Institute of Mineral Processing Technology, Irkutsk, Russia:

Senchenko A. E., Chief Executive Officer


The study addresses efficiency of heap-leach cyanidation as function of processing properties of ore. The grain size composition, chemistry and mineralogy represent the main ore properties. The test ore samples contain up to 76% of aluminum and silicon oxides. The ore features a few impurities and a moderate amount of sulfidesulfur (0.6%). Assaying after preliminary gravity separation of gold shows that average Au content is 1.74 g/t (site 1) and 1.43 g/t (site 2). This research aims to analyze the processing properties of ore and assess expediency of heap-leach cyanidation of this ore. The representative samples for the heap leach tests are the primary sulfide ore. The lab-scale tests of agitation cyanidation of ore samples from different sites were carried out using bottle agitator. The scope of the analysis also embraced the influence of the ore size and cyanide concentration on the leaching efficiency. Furthermore, adsorption of gold from cyanidation solutions was also tested. The cyanidation products were subjected to atomic adsorption spectroscopy (solution) and assaying (cake).

keywords Gold, ore, cyanidation, extraction, heap leaching, production research

1. McArthur J. C., Forrest R., Forrest W. Process obtaining gold and silver from ores. US Patent 403. 1889. 202 p.
2. Potter G. M., Salisbury H. P. Innovations in gold metallurgy. Mining Congress Jounal. 1974. Vol. 60. pp. 54–57.
3. Heinen H. J., McClelland G. E., Lindstrom R. E. Enhancing percolation rates in heap leaching of gold-silver ores. Report of Investigations—United States, Bureau of Mines. Washington, DC. : U.S. Dept. of the Interior, Bureau of Mines, 1979. 20 p.
4. Rasskazova A. V., Sekisov A. G., Kirilchu M. S. et al. Stageactivation leaching of oxidized copper–gold ore: Theory and technology. Eurasian Mining. 2020. No. 1. pp. 52–55. DOI: 10.17580/em.2020.01.10
5. Donato D. B., Madden-Hallett D. M., Smith G. B. et al. Heap leach cyanide irrigation and risk to wildlife: Ramifications for the international cyanide management code. Ecotoxicology Environmental Safety. 2017. Vol. 140. pp. 271–278.
6. Adams C. R., Porter C. P., Robshaw T. J. et al. An alternative to cyanide leaching of waste activated carbon ash for gold and silver recovery via synergistic dual-lixiviant treatment. Journal of Industrial and Engineering Chemistry. 2020. No. 8. pp. 120–130. DOI: 10.1016/j.jiec.2020.08.031
7. Torres R., Lapidus G. T. Base metal citrate pretreatment of complex ores to improve gold and silver leaching with thiou rea. Hydrometallurgy. 2020. Vol. 197. DOI: 10.1016/j.hydromet.2020.105461
8. Qin H., Guo X., Tian Q. et al. Pyrite enhanced chlorination roasting and its efficacy in gold and silver recovery from gold tailing. Separation and Purification Technology. 2020. Vol. 250(9). DOI: 10.1016/j.seppur.2020.117168
9. Prokhorov K. V., Burdonov A. E. Chloride-hypochlorite leaching of gold from oxidized ores of the Malmyzh field. Gornyi Zhurnal. 2018. No. 10. pp. 62–66. DOI: 10.17580/gzh.2018.10.12
10. Tang Y., Yin W., Huang S. et al. Enhancement of gold agitation leaching by HPGR comminution via microstructural modification of gold ore particles. Minerals Engineering. Vol. 159(6). 2020. DOI: 10.1016/j.mineng.2020.106639
11. Tang Y., Yin W., Wang J. et al. Effect of HPGR comminution scheme on particle properties and heap leaching of gold. Canadian Metallurgical Quarterly. 2020. Vol. 59(3). DOI: 10.1080/00084433.2020.1769365
12. Botz M., Marsden J. Heap Leach Production Modeling: A Spreadsheet-Based Technique. Mining Metallurgy and Exploration. 2019. Vol. 36(2). pp. 1041–1052.
13. Burdonov A. E., Kovalev E. V., Prokhorov K. V. et al. A study on the use of pelletization in the processing of argil-laceous goldbearing ores. Obogashchenie Rud. 2020. No. 3. pp. 31–37. DOI: 10.17580/or.2020.03.06
14. Eksteen J. J., Oraby E. A., Tanda B. C. et al. Towards industrial implementation of glycine-based leach and adsorption technologies for gold-copper ores. Canadian Metallurgical Quarterly. 2018. Vol. 57(4). pp. 390–398.
15. Fedotov P. K., Senchenko A. E., Fedotov K. V. et al. Concentration studies for low sulfide ores. Obogashchenie Rud. 2020. No. 1. pp. 15–21. DOI: 10.17580/or.2020.01.03
16. Hedjazi F., Monhemius A. J. Industrial application of ammo niaassisted cyanide leaching for copper-gold ores. Minerals Engineering. 2018. Vol. 126. pp. 123–129.
17. Cao P., Zhang S. H., Zheng Y. J. Effects of iron, arsenic and carbon removal from a dust of refractory gold concentrates on cyanide leaching. Zhongguo Youse Jinshu Xuebao. Chinese Journal of Nonferrous Metals. 2020. Vol. 30. pp. 1142–1152.
18. Fedotov P. K., Senchenko A. E., Fedotov K.V. et al. Hydrometallurgical Processing of Gold-Containing Ore and its Enrichment Products. Metallurgist. 2021. Vol. 65(3). pp. 214–227.

Full content Influence of ore processing behavior on heap-leach cyanidation and agitation leaching efficiency