Analysis of factors influencing losses of recious metals during alluvial deposit exploitation

This article is dedicated to the analysis of factors influencing the losses of precious metals (e.g., gold) during the exploitation of alluvial deposits. Alluvial gold deposits represent one of the most common and significant sources of precious metals. Nevertheless, suboptimal mining methods, poor process organization, and other factors can lead to substantial losses of valuable metals. A review of existing methods and technologies for mining alluvial deposits was conducted to identify the primary sources of metal losses. Both technical and organizational aspects were analyzed, including the use of modern equipment, the efficiency of various exploration, enrichment, and gold extraction methods, as well as factors affecting process efficiency. The study revealed key factors contributing to the losses of precious metals, such as insufficient accuracy of geological exploration and ineffective methods of gold-bearing ore separation. Recommendations and methods to improve mining processes, reduce losses, and enhance overall efficiency in the extraction of precious metals were proposed.

Zhuravlev K. A., Vasyuta A. D. Analysis of factors influencing losses of recious metals during alluvial deposit exploitation. MIAB. Mining Inf. Anal. Bull. 2023;(12-1):53—63. [In Russ]. DOI: 10.25018/0236_1493_2023_122_0_53.

The research is carried out using the resources of the Center for Collective Technical Equipment “Center for Processing and Storage of Scientific Data of the Far Eastern Branch of the Russian Academy of Sciences”, financed by the Russian Federation Lyceum of the Ministry of Science and Higher Education of the Russian Federation under project No. 075−15−2021−663.

Zhuravlev K. A.¹, graduate student, engineer, e-mail: kirill_dguravlev@mail.ru;
Vasyuta A. D.¹, graduate student, junior researcher, e-mail: vasyuta.aleksey.igd@gmail.com;
¹ Institute of Mining of Far East Branch of the Russian Academy of Sciences, Khabarovsk, Russia.
The author declares that there is no conflict of interests regarding the publication of this article.

1. Alekseev V. S., Banshchikova T. S. The use of unconventional technologies for extracting gold from man–made placer formations of the Amur region. Gornyi Zhurnal. 2018. No. 10. pp. 52−57. DOI: 10.17580/gzh.2018.10.10.

2. Alekseev V. S. Justification of rational technology for the formation of a productive zone at open development of technogenic placers of the Amur region: abstract. dis. ... candidate of Technical Sciences. Khabarovsk, 2012. 22 p.

3. Banshchikova T. S., Leonenko N. A., Alekseev V. S. Physico-chemical methods of extracting fine gold from technogenic placers of the Amur region. Ore enrichment. 2017. No. 6. pp. 32−37. DOI: 10.17580/or.2017.06.06.

4. Alekseev V. S., Banshchikova T. S. Extraction of resistant forms of gold from gravity concentrates and tailings of placer enrichment with the use of chemical reagents. Physicotechnical problems of mineral development. 2017. No. 4. pp. 159−164.

5. Litvintsev V. S. Resource potential of placer mining waste. Journal of Mining Science. 2013. no. 1. С. 118–126.

6. Mamaev Yu. A., Litvintsev B. S., Alekseev V. S. Processes of formation of a productive reservoir of technogenic placers of precious metals. Pacific geology. 2012. Vol. 31, No. 4. pp. 106–112.

7. Giraldo Malka U. F., Dunin-Borkovsky A. S., Bustamante N. F., Mori Reagno M. J., Giraldo Armas J. M. Alluvial gold mining, conflicts and state intervention in the southern Amazonia of Peru. Mining industry and society. 2023, Volume 13, p. 101219. DOI: 10.1016/j. exis.2023.101219.

8. Semenov A. N., Seriy R. S. Investigation of disintegration processes of hard-to-wash sands of placer gold deposits. News of higher educational institutions. Gornyi Zhurnal. 2019. No. 8. pp. 88−96. DOI: 10.21440/0536−1028−2019−8-88−96.

9. Seriy R. S. Improving the efficiency of the development of high-clay placers. Surveying and subsoil use. 2009. No. 6. pp. 51−57.

10. Seriy R. S., Alekseev V. S., Sas P. P. Evaluation of the efficiency of sluice flushing devices when mining deposits with fine and plate gold. Gold and technologies. 2015. No. 1. pp. 104−107.

11. Seriy R. S., Taganov V. V., Gevalo K. V. Reducing losses of precious metals on flushing devices by optimizing the operation of fine–filling sluices. Gornyi Zhurnal. 2018. No. 10. pp. 49−52. DOI: 10.17580/gzh.2018.10.09.

12. Zhuravlev K. A. Analysis of the operation of sluice flushing devices during the development of placer gold deposits. Actual problems of the development of georesources: materials of the First All–Russian Scientific Conference of Young Scientists and postgraduates. 2022. pp. 69–73.

13. Vasyuta A. D., Zhuravlev K. A. Analysis of the operation of sluice flushing devices and assessment of their energy intensity. Problems of subsoil use. 2023. No. 2. PP. 32−39. DO: 10.25635/2313−1586.2023.02.032.

14. Tuokuu F., Idemudiya U., Gruber J. S., Kayira J. Identification and explanation of the best practices of environmental policy for the mining industry a systematic review. Journal of Cleaner Production. 2019, Volume 222, pp. 922−933.

15. Frimmel H. E., James K. S. Placer deposits and processes. Geological Encyclopedia (second edition). 2021, pp. 877−898. DOI: 10.1016/B978−0-08−102908−4.00004−7.

16. Taganov V. V., Semenov A. N. Study of patterns of distribution of useful components on sluice devices during mining of placer deposits. Problems of Subsoil Use. 2019. no. 2 (21). С. 138−142.

17. Taganov V. V., Alekseev V. S. Justification of exploitation technology of technogenic alluvial gold deposits with formation of productive zone. Problems of Subsoil Use. 2020. no. 2 (25). С. 73−79.

18. Wierchowiec J., Mikulski S. Z., Gąsiński A. Nanoforms of Gold from Abandoned Placer Deposits of Wądroże Wielkie (Lower Silesia, Poland). Ore Geology Reviews. 2018. Vol. 101. Р. 211−220. DOI: 10.1016/j.oregeorev.2018.07.009.

19. Massaro L., Theije M. Understanding Small-Scale Gold Mining Practices: An Anthropological Study on Technological Innovation in the Vale Do Rio Peixoto (Mato Grosso, Brazil). Journal of Cleaner Production. 2018. Vol. 204. Р. 618−635. DOI:10.1016/j. jclepro.2018.08.153.

20. Litvitsev V., Alexeev V., Kradenykh I. The technology of development of residue objects of precious metals placer deposits. E3S Web of Conferences. 2018. Vol. 56. DOI: 10.1051/e3sconf/20185601005.