Application of strategic stockpile for ore quality stabilization at Erdenet open pit mine

Batsukh Elbegzaya; Sodnom Tsedendorj; Battogtokh Batbold; Borya Orkhontuul

doi:10.5564/mgs.v30i60.3747

Authors

Batsukh Elbegzaya Department of Mining Technology, School of Geology and Mining, Mongolian University of Science and Technology, Ulaanbaatar 14200, Mongolia https://orcid.org/0009-0008-4132-2651
Sodnom Tsedendorj Department of Mining Technology, School of Geology and Mining, Mongolian University of Science and Technology, Ulaanbaatar 14200, Mongolia
Battogtokh Batbold Erdenet Mining Corporation, Erdenet city 61000, Mongolia https://orcid.org/0000-0002-1601-340X
Borya Orkhontuul Department of Mineral Processing and Engineering, School of Geology and Mining, Mongolian University of Science and Technology, Ulaanbaatar 14200, Mongolia https://orcid.org/0009-0006-3023-3309

DOI:

https://doi.org/10.5564/mgs.v30i60.3747

Keywords:

accumulation and bedding stockyards, operational data, ore control, fleet management system

Abstract

Ore mixing and blending are performed at the mining benches, typically involving 6-8 working benches. However, as the mine deepens, operations across multiple benches become more challenging, and declining copper grades necessitate increased processing plant capacity. Variability in total copper content in the sulfide ore can reach up to 8%, with an allowable range of 0.541% to 0.461% when the average is 0.501%, as per internal Erdenet standard STP-01352-901908085-11:2013. Maintaining this standard within a 24-hour period is difficult, complicating process control. To achieve an 85% metal recovery rate, the processing plant is adjusted to meet the standard ore quality. However, short-term fluctuations exceeding ±8% lead to decreased recovery rates and potential metal loss. Establishing tactical stockpiles close to the primary crushers or along transportation routes can mitigate these issues by stabilizing ore quality before processing. The tactical stockpile project relies on optimizing operational procedures, integrating stockpile construction using mine-sourced waste rock, preparing platforms, utilizing existing equipment capacity, enhancing signage and lighting, and creating guidelines for safe operation and grade averaging. This approach provides a rapid and effective solution to improve blending efficiency and operational stability.

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References

Assimi, H., Koch, B., Garcia, C., Wagner, M., Neumann, F. 2021. Run-of-Mine Stockyard Recovery Scheduling and Optimisation for Multiple Reclaimers. Neural and Evolutionary Computing (cs.NE), 12294. https://doi.org/10.48550/arXiv.2112.12294

Baatarkhuu, J. 2008. Technology improvement copper-molybdenum beneficiation ore of the Erdenetiin Ovoo deposit (Mongolia) in the context of change material composition of the ore. GIAB journal. vol. 62, p. 345-349 (in Russian)

Battogtokh, O. 2019. Analysis of factors affecting the quality of copper enrichment. Ph.D. thesis in Engineering, Mongolian University of Science and Technology, Ulaanbaatar (in Mongolian).

Battogtokh, O., Tsogtbayar, B. 2021. Changes in the physical properties of Erdenetiyn-Ovoo deposits. Proceeding Mining Technology, Economincs, Ecology, Geodesy, Markscheider (Journal of School of Geology and Mining Engineering, Mongolian University of Science and Technology), vol. 21(11)-288, p.162-169. (in Mongolian)

Davaasambuu, D. 1995. Mineral properties and chemical composition of copper porphyry ore processing in Erdenetiyn-Ovoo Deposits. Ph.D. thesis in Engineering, Moscow State Mining University, Moscow (in Russian)

Delgerbat, L. 2002. Research, modeling and optimization of crushing and collective flotation of copper-molybdenum ores. Mining Information and Analytical Bulletin, vol, 5, p. 228. (in Russian)

Elbegzaya, B., Uranbaigali, G., Tsedendorj, S. 2023. Feasibility studies on averaging quality of ore. Proceeding Mining Technology, Economincs, Ecology, Geodesy, Markscheider (Journal of School of Geology and Mining Engineering, Mongolian University of Science and Technology), vol. 23(15)-321, p. 22-27. (in Mongolian).

Everett, J. 2010. Simulation Modeling of an Iron Ore Operation to Enable Informed Planning. Interdisciplinary Journal of Information, Knowledge, and Management, vol. 5, p. 101-114. https://doi.org/10.28945/1126

Fomin, S.I., Shevelev, V.A., Marinin, M.A. 2014. Mining units quantity determination to achieve the established open cast output and averaging ore requirements. Journal of Mining Institute, vol. 207, p. 70-73. (in Russian with English abstract) https://pmi.spmi.ru/pmi/article/view/5384

Ganbaatar, Z. 2003. Establishment of regularities in the disclosure of mineral complexes and improvement of ore treatment of copper-molybdenum ores. Ph.D. thesis in Engineering. Moscow State Mining University, Moscow (in Russian)

Ganjargal, S. 2005. Substantiation of methods for improving the quality of ore flows in open-pit mining of complex structural deposits in Mongolia. Ph.D. thesis in Engineering, Moscow State Mining University, Moscow (in Russian)

Ivanov, I., Dolgushin, A., Gurev, V. 2021. Creation of a 3D Geological and Geophysical model of the Erdenetiyn-Ovoo Field. Engineering and Mining Geophysics 2021, p. 1-4. https://doi.org/10.3997/2214-4609.202152095

Jupp, K., Howard, T.J., Everett, J.E. 2024. Role of pre-crusher stockpiling for grade control in iron ore mining. Transactions of the Institutions of Mining and Metallurgy, Applied Earth Science, vol. 122(4), p. 242-255. https://doi.org/10.1179/1743275814Y.0000000045

Morley, C., Arvidson, H. 2017. Mine value chain reconciliation-demonstrating value through best practice. In Proceedings of the Tenth International Mining Geology Conference 2017, p. 279-292.

Otgonbileg, Sh. 1996. Ore mass management for metal recovery estimation based on deposit geometrization. PhD thesis in Technical Sciences, Moscow State Mining University (in Russian)

Shevelev, V.A. 2014. Determination of the efficiency of ore averaging in buffer-blending warehouses. Journal of Mining Institute, vol. 207, p.87-89 (in Russian)

Statsenko, L., Melkoumian, N. 2013. A case study on blending raw ores at open pit stockyard using decision support system for designing effective technological schemes for open pit mines. 13th International Multidisciplinary Scientific Geoconference and EXPO, SGEM 2013 vol. 1, p. 297-304.

Statsenko, L.G., Branovets, N.E. 2014. The "Blending Stockyard" Module Development for Information System Stabilization Quality of Minerals in the Quarry. Vestnik of Nosov Magnitogorsk State technical University, vol. 2(46), p. 5-10. (in Russian)

Undrakhtamir, A., Damdinsuren, M., Gilymayaev, V.A., Amarzaya, Kh., Elbegzaya, D. 2016. Updated report on the reserves of copper-molybdenum "Erdenetin-Ovoo" in the Bayan-Undur sum area of the Orkhon Province in the North-West and Central Regions. Geology and Mining Expedition Library, Erdenet Mining Corporation (in Mongolian)

Zarubin, M., Statsenko, L., Zarubina, V., Fionin, E. 2017. Developing information systems of operation schedules to stabilze the grade of a mineral. Mining of Mineral Deposits, vol. 11(4), p. 59-70. (in Russian with English abstract) https://doi.org/10.15407/mining11.04.059

Zhao, Sh., Lu, T-F., Koch, B., Hurdsman, A. 2014. 3D Stockpile Modelling to Improve the Quality Control in Iron Ore Handling. Proceedings of the International Conference on Mining, Material and Metallurgical Engineering, Prague, Czech Republic, August 11-12, 2014, Paper No. 80.1-80.9. https://avestia.com/MMME2014_Proceedings/papers/80.pdf