Navoi Mining and Metallurgical Combinat, Navoi, Uzbekistan:

K. Sanakulov, CEO, Professor, Doctor of Engineering Sciences
N. P. Snitka, Chief Engineer, info@ngmk.uz

The international geological community has acknowledged Muruntau gold deposit as the greatest discovery in the mid-to-late 20^th century. Muruntau mine field holds the total appraised resource potential of more than 4.5 thousand tons of gold. Hydrometallurgical plant GMZ-3 implements gold-ore processing by gravitational sedimentation and adsorption. The technological and instrumental modernization of the gold processing circuit toward its higher capacity, gold recovery and thoroughness are the important aspects of production improvement and cost reduction. The developed and introduced ore milling flowchart provides replacement of the second milling stage pumps by higher-capacity pumps backed up with additional cyclones. Aiming to ensure stable gold production at plants GMZ-2 and GMZ-3, Navoi MMC’s experts accomplished the feasibility study of mining operations in Chukurkuduk and Turbai deposits in 2020. The growth prospects for open pit mining in Murunatu–Myutenbai fields after 2060 are estimated using the model of optimized ultimate pit limit design at the gold price of USD 1500/t. The model ultimate pit limit embraces all probable reserves as per the detailed 2D seismic data as of early 2020, including proven reserves intended for open pit and underground mining. The gold ore appraisal and the expansion program elaborated for Muruntau gold mining and refining integrated works in joint Muruntau–Myutenbai field, through implementation of operation phases V and further make it possible to forecast stable performance up to 2030–2050.

1. Sanakulov K. Efficient use of mining and processing waste in heap gold leaching. Navoi : Tipografiya NGMK, 2021. 379 p.
2. Sanakulov K. S. Navoi Mining and Metallurgical Combinat—Leader of the mining industry in Uzbekistan. Gornyi Zhurnal. 2018. No. 9. pp. 4–9.
3. Uzbekistan’s Muruntau is the world’s top gold producer for the second year in a row. 2021. Available at: https://www.trend.az/casia/uzbekistan/3391777.html (accessed: 15.04.2021).
4. Snitka N. P., Raimzhanov B. P., Naimova R. Sh. Substantiation of ways for rational use of deep pit technogenic resources. Gornye nauki i tekhnologii. 2018. No. 1. pp. 59–71.
5. Ruziev N. R. 2020–2022 investment program for Navoi Mining and Metallurgical Combinat. Gornyi vestnik Uzbekistana. 2020. No. 1. pp. 116–119.
6. Khamroev I. O. Gold reserves of the Navoi Mining and Metallurgical Combinat. Gornyi Zhurnal. 2018. No. 9. pp. 22–32. DOI: 10.17580/gzh.2018.09.01
7. Mohammadi E., Pourabdoli M., Ghobeiti-Hasab M., Heidarpour A. Ammoniacal thiosulfate leaching of refractory oxide gold ore. International Journal of Mineral Processing. 2017. Vol. 164. pp. 6–10.
8. Ghasemi S., Mohammadnejad S., Khalesi M. R. A DFT study on the speciation of aqueous gold and copper cyanide complexes. Computational and Theoretical Chemistry. 2018. Vol. 1124. pp. 23–31.
9. Yang T., Rao S., Liu W., Zhang D., Chen L. A selective process for extracting antimony from refractory gold ore. Hydrometallurgy. 2017. Vol. 169. pp. 571–575.
10. Wang Y., Xiao L., Liu H., Qian P., Ye S., Chen Y. Acid leaching pretreatment on two-stage roasting pyrite cinder for gold extraction and co-precipitation of arsenic with iron. Hydrometallurgy. 2018. Vol. 179. pp. 192–197.
11. VNIPIPT undertakes the cost optimization project for Muruntau open pit mine of Navoi Mining and Metallurgical Combinat. VNIPIPT, 2020. Available at: http://www.vnipipt.armz.ru/ru/kompaniya/novosti/348-ao-vnipipromtekhnologii-vypolnit-proekt-optimizatsii-raskhodov-pri-otrabotkekarera-muruntau-gp-navoijskij-gok (accessed: 15.04.2021).
12. Snitka N. P. Methods and means to generate ore flow in the current conditions of natural and manmade deposit mining. Bukhara : Durdona, 2015. 142 p.
13. Verkhozin S. S. Gold mining industry of Uzbekistan. Zolotodobycha. Available at: https://zolotodb.ru/article/12094 (accessed: 15.04.2021).
14. Kadyrov A. A., Sanakulov K. S., Bibik I. P. Concept framework for the strategy of innovative development in the Kyzylkum region. Tashkent : Izdatelstvo «Uzbekistan», 2013. 395 p.
15. Khamroev I. O. Specifics of localizations of commercial-level gold concentrations in Amantaitau field. Gornyi vestnik Uzbekistana. 2019. No. 2. pp. 20–24.
16. Yakovlev V. L., Glebov A. V., Kulniyaz S. S., Norova Kh. Yu. Improving the efficiency of cyclical-flow technology. Gornyi vestnik Uzbekistana. 2020. No. 3. pp. 47–49.