Almalyk Branch of NUST MISIS (Almalyk, Uzbekistan)
T. I. Shakarov, Candidate of Technical Sciences, Associate Professor of the Department of Metallurgy, shakarovtulkin@gmail.com
Kh. A. Pulatov, Assistant of the Department of Metallurgy, khusankhonp1905@gmail.com
M. A. Abdumurodova, Master’s Student, abdumurodovamushtariy9@gmail.com

The paper presents the results of experiments on the possibility of extracting the iron-containing magnetic fraction from the current flotation tailings of copper-molybdenum ores MOF-2 of Almalyk MMC JSC using the wet magnetic separation method. The studies were carried out on four representative samples of flotation waste with a particle size of 65%, class –0.074 mm. Magnetic separation was carried out on an ERGA-MMS 25 × 300 separator with a rod magnetic system with a magnetic induction of at least 0.45 Tesla; The mass of the sample in each experiment was 10 kg of dry matter. Each experiment was performed at least three times, and the results were processed using the average values of technological indicators. It was found that when the Fe content in the source material is 3.7–5.1%, the yield of the magnetic product is 4.1–5.8%, the iron content in the concentrate reaches 44.6–48.2%, and the extraction of Fe is 49.4–55.1%. Using the magnetic separation method, effective preliminary concentration of iron-containing components in a product with a relatively low yield has been achieved. Statistical processing confirmed a stable positive relationship between the Fe content in the diet and technological indicators of magnetic separation. The expected economic calculation has been carried out: with a minimum Fe extraction (25%), the possible production of the product in terms of 62% Fe concentrate is about 59.7 thousand tons/year, and the estimated gross revenue is about 6.36 million dollars/year. The results obtained confirm the prospects for further development of an integrated technology for processing flotation tailings of coppermolybdenum ores with the release of an iron-containing product.

1. Aleksandrova T. N. Complex and deep processing of mineral raw materials of natural and technogenic origin: state and prospects. Journal of Mining Institute. 2022. Vol. 256. pp. 503–504.
2. Abramov A. A. Technology of processing and beneficiating non-ferrous metal ores: in 2 vols. Vol. 1: Ore preparation and Cu, Cu-Py, Cu-Fe, Mo, Cu-Mo, Cu-Zn ores. Moscow: MGGU, 2005. 575 p.
3. Karmazin V. V., Karmazin V. I. Magnetic, electric and special methods of mineral processing in 2 vols. Vol. 1. Magnetic and electric methods of mineral processing. Moscow: Gornaya kniga, 2005. 669 p.
4. Pelevin A. E. Magnetic and Electrical Methods of Concentration. Yekaterinburg: Izdatelstvo UGGU Publishing House, 2018. 296 p.
5. Shakarov T. I., Mukhamedbaev A. A., Matmusaev I. K., Rustamov Sh. Sh. Possibilities for integrated processing of copper-molybdenum ores flotation wastes. Universum: Technical Sciences. 2024. Iss. 10. pp. 28–34.
6. Shakarov T. I., Pulatov Kh. A., Abdumuratova M. A. Prospects for the extraction of iron-containing components from flotation waste of copper-molybdenum ores. Universum: Technical Sciences. 2025. Iss. 10. pp. 9–12.
7. Jiao R.-M., Xing P., Wang C.-Y., Ma B.-Z., Chen Y-Q. Recovery of iron from copper tailings via low-temperature direct reduction and magnetic separation: process optimization and mineralogical study. International Journal of Minerals, Metallurgy and Materials. 2017. Vol. 24. pp. 974–982.
8. Geng C., Wang H.-J., Hu W.-T., Li L., Shi C.-S. Recovery of iron and copper from copper tailings by coal-based direct reduction and magnetic separation. Journal of Iron and Steel Research International. 2017. Vol. 24. pp. 991–997.
9. Li S., Wang Q., Zhu Y., Zhao Y., Han Y., Yue T. Stepwise utilization process to recover valuable components from copper slag. Minerals. 2021. Vol. 11, Iss. 2. 211.
10. Tang Z., Zhang Q., Sun Y., Gao P., Han Y. Pilot-scale extraction of iron from flotation tailings via suspension magnetization roasting in a mixture of CO and H2 followed by magnetic separation. Resources, Conservation and Recycling. 2021. Vol. 172. 105680.
11. Santibáñez-Velásquez L. E., Guzmán A., Morel M. J. Extraction of iron and other metals from copper tailings through leaching. Metals. 2022. Vol. 12, Iss. 11. 1924.
12. Zhou H., Liu G., Zhou C., Chen Y., Arif M., Sun M., Liu Y., Wang H. Quantitative characterization and magnetic separation of copper pyrometallurgical tailing for molybdenum and copper preconcentration and cleaning of environmentally hazardous elements. Journal of Industrial and Engineering Chemistry. 2023. Vol. 122. pp. 210–220.
13. Wei L., Xu H., Zhang Y., Sun S., Xu X. Efficient and economic recovery of metallic iron from copper tailings via reductive roastingwet magnetic separation process. Separation and Purification Technology. 2026. Vol. 387. 136659.