CHEMICAL, GRANULOMETRIC AND MINERALOGICAL CHARACTERIZATION OF TECHNOGENIC WASTE FROM THE CHODAK GOLD-PROCESSING PLANT
Keywords:
Chodak deposit; technogenic waste; gold; silver; granulometric analysis.Abstract
This study investigates the chemical, granulometric, and mineralogical characteristics of technogenic waste generated at the Chodak gold-processing plant. Representative samples were collected from different depths and waste layers and analyzed to determine the distribution of valuable components. Gold concentrations ranged from 0.60 to 1.68 g/t, while silver concentrations varied from 4.35 to 28.89 g/t. The study showed that approximately 60.6% of gold occurs in free and intergrown forms, whereas 25.64% is associated with rock-forming minerals and sulfides. Granulometric analysis revealed a predominance of fine particles. The obtained results provide a basis for developing appropriate beneficiation methods for recovering gold and silver.
References
1.Xasanov A.S., Xakimov K.J., Shukurov A.Yu., Boymurodov N.A., Nurxonov F.A. Features of involvement in the processing of industrial waste from mining and metallurgical industries. International Journal of Creative Research Thoughts (IJCRT). 2020;8(12):1315–1320.
2.Xo‘jaqulov A.M., Xasanov A.S., Xakimov K.J. Technology for processing technogenic waste from the mining industry and analysis of innovative approaches. Innovative Technologies. 2021;1(41):7–11.
3.Qayumov O.A., Xakimov K.J., Eshonqulov U.X., Boymurodov N.A., Norqulov N.M. Study of the chemical, granulometric and phase composition of gold-bearing mixed ores. Universum: Technical Sciences. 2021;3(84):71–75.
4.Xakimov K.J., Eshonqulov U.X., Amanov T.S., Umirzoqov A.A. Complex processing of lead-containing technogenic waste from mining and metallurgical industries in the Urals. The American Journal of Engineering and Technology. 2020:102–108.
5.Surimbayev B., Bolotova L., Akcil A., Yessengarayev Y., Khumarbekuly Y., Kanaly Y., Akzharkenov M. Gravity concentration of gold-bearing ores and processing of concentrates: A review. Mineral Processing and Extractive Metallurgy Review. 2025;46(7):726–750. https://doi.org/10.1080/08827508.2024.2395824.
6.Allan G.C., Woodcock J.T. A review of the flotation of native gold and electrum. Minerals Engineering. 2001;14(9):931–962. https://doi.org/10.1016/S0892-6875(01)00103-0.
7.Na H., Eom Y., Yoo K., Alorro R.D. A review on the reprocessing of sulfide tailings for resource recovery and AMD prevention using mineral processing methods. Minerals Engineering. 2024;218:109025. https://doi.org/10.1016/j.mineng.2024.109025.
8.Tapfuma A., Mutimutema P., Bazhko O., Nkabinde S., Ledwaba M., Kabangu J.M., Chiwaye N., Muller E., Ndlovu G. Gold tailing metal extraction and sustainable end-use: A closed-loop review. Minerals Engineering. 2026;239:110075. https://doi.org/10.1016/j.mineng.2026.110075.
9.Kursunoglu S. A review on the recovery of critical metals from mine and mineral processing tailings: Recent advances. Journal of Sustainable Metallurgy. 2025;11:2023–2050. https://doi.org/10.1007/s40831-025-01126-y.
10.Adams M.D., ed. Gold Ore Processing: Project Development and Operations. 2nd ed. Amsterdam: Elsevier; 2016.