This study explores the thermodynamic feasibility of selectively oxidizing iron
contained in chalcopyrite mineral while preventing the oxidation of copper sulphide, with the ultimate
goal of enhancing the copper concentration in the sulphide concentrate. A redox reaction in the solid
phases between chalcopyrite and copper (I) oxide was constructed and subjected to thermodynamic
analysis. The research identifies a crucial temperature range of 498-598 K (225-325 °C) as the most
favourable for the redox reaction. The equilibrium constants at the selected optimal temperatures, 1.152
for chalcopyrite and 1.137 for copper (I) oxide, indicate that the redox reaction adheres to the expected
kinetic behaviour. The significance of these findings lies in the potential to selectively oxidize iron in
chalcopyrite, allowing for its subsequent removal through magnetic separation. This strategic approach
promises an increase in the copper percentage within the sulphide concentrate, thereby enhancing the
efficiency and economic viability of copper extraction processes. The study not only provides valuable
insights into the thermodynamics of the chalcopyrite-copper (I) oxide redox reaction but also
establishes a practical temperature range for its optimal execution. The successful implementation of
this approach holds considerable promise for the mining and metallurgical industries, offering a
pathway to improve copper recovery processes and addressing the economic challenges associated with
traditional extraction methods.
This study explores the thermodynamic feasibility of selectively oxidizing iron
contained in chalcopyrite mineral while preventing the oxidation of copper sulphide, with the ultimate
goal of enhancing the copper concentration in the sulphide concentrate. A redox reaction in the solid
phases between chalcopyrite and copper (I) oxide was constructed and subjected to thermodynamic
analysis. The research identifies a crucial temperature range of 498-598 K (225-325 °C) as the most
favourable for the redox reaction. The equilibrium constants at the selected optimal temperatures, 1.152
for chalcopyrite and 1.137 for copper (I) oxide, indicate that the redox reaction adheres to the expected
kinetic behaviour. The significance of these findings lies in the potential to selectively oxidize iron in
chalcopyrite, allowing for its subsequent removal through magnetic separation. This strategic approach
promises an increase in the copper percentage within the sulphide concentrate, thereby enhancing the
efficiency and economic viability of copper extraction processes. The study not only provides valuable
insights into the thermodynamics of the chalcopyrite-copper (I) oxide redox reaction but also
establishes a practical temperature range for its optimal execution. The successful implementation of
this approach holds considerable promise for the mining and metallurgical industries, offering a
pathway to improve copper recovery processes and addressing the economic challenges associated with
traditional extraction methods.
| № | Author name | position | Name of organisation |
|---|---|---|---|
| 1 | Sultonov K.S. | Doctoral student, | Tashkent State Technical University , Republic of Uzbekistan |
| 2 | i Beknazarova G.B. | Master student, | Tashkent State Technical University , Republic of Uzbekistan |
| 3 | Khojiev S.T. | PhD | Tashkent State Technical University , Republic of Uzbekistan |
| 4 | Saidova M.S. | Doctoral student | Tashkent State Technical University , Republic of Uzbekistan |
| № | Name of reference |
|---|---|
| 1 | 1. Matkarimov, S., Yusupkhodjaev, A., Khojiev, Sh., Berdiyarov, B., Matkarimov, Z. (2020). Technology for the Complex Recycling Slags of Copper Production. Journal of Critical Reviews, 214. 2. Khudoykulov K., Imomov Sh., Khojiev Sh., Sultanov Kh. Study of the possibilities of selective oxidation of iron in chalcopyrite. Student Bulletin: electronic scientific journal, 2023, №12. |
| 2 | 3. Khudoykulov K., Imomov Sh., Javliev J., Khojiev Sh., Sultanov Kh. Importance of hydrometallurgical processing of sulphide copper concentrates. Student Bulletin: electronic scientific journal, 2023, №15. 4. Sultanov Kh.Sh., Khojiev Sh.T., Mutalibkhanov S.S. Thermodynamic and Kinetic Analysis of the Chalcopyrite-Magnetite Reaction: Optimizing Temperature for Enhanced Efficiency. Universum: technical sciences, 2023, №36. |
| 3 | 5. Tretyakov Yu. D. Solid-phase reactions. Chemistry, 1978, 360. 6. Khasanov A.S., Ochildiyev Q.T., Berdiyarov B.T., Khojiev Sh.T., Matkarimov S.T. Study thermodynamics of magnetite sulfidation in copper smelting processes. Technical science and innovation, 2022, №19. 7. Hojiyev Sh.T., Berdiyarov B.T., Nuraliyev O.U. Study of some thermodynamic aspects of hydrothermal processing of iron soot. Composite materials, 2023, №43. 8. Khojiev, Sh. Modern Scientific Researches in Metallurgy: from Theory to Practice: monograph. - Beau Bassin (Mauritius): LAP LAMBERT Academic Publishing, 2020, 154. |
| 4 | 9. Toshpulatov D.D., Khojiev Sh.T., Berdiyarov B.T., Zorayeva A.J., Kholmominova S.F. Thermodynamic Analysis of Chalcopyrite Oxidation-Reduction Process. International Journal of Engineering and Information System, 2022, №96. 10. Hojiyev Sh.T., Tashpo‘latov D.D., Kholmominova S.F. Study of the thermodynamic possibilities of the reaction of iron (II)-metasilicate with lime. Technical stars, 2022, №22. 11. Khojiev Sh.T., Saidova M.S., Sultonov H.Sh., Esonova M.O. Development of Sorption Technology Leaching of Gold-Containing Ores to Reduce Slip and Loss of Gold with Tails. International Journal of Engineering and Information Systems, 2023, 7(1), 5-14. |
| 5 | 12. Khudoykulov K., Imomov Sh., Khojiev Sh., Sultonov Kh. Study of possibilities of selective oxidation of iron in chalcopyrite. Студенческий вестник: электрон. научн. журн., 2023, №20(259), часть 16, 12-14. 13. Khudoykulov K., Imomov Sh., Javliev J., Khojiev Sh., Sultonov Kh. Importance of hydrometallurgical processing of sulphide copper concentrates. Студенческий вестник: электрон. научн. журн., 2023, №20(259), часть 16, 15-17. 14. Khojiev Sh.T., Sultonov H.Sh., Rakhmataliev Sh.A., Rajabov Q.K., Uralova N.A., Shukurova M.T. An Alternative Method of Cleaning the Air Mixed With Acid Gases around Copper Smelters. International Journal of Academic and Applied Research, 2023, 7(9), 1-5. |
| 6 | 15. Sultonov Kh.Sh., Khojiev Sh.T., Mutalibxonov S.S. Thermodynamic and Kinetic Analysis of the Chalcopyrite-Magnetite Reaction: Optimizing Temperature for Enhanced Efficiency. Universum: технические науки, 2023, №12(117), часть 7, 36-39. 16. Rakhmataliev Sh., Sultonov Kh., Khojiev Sh., Abdukholiqov A. Modern Technologies of Gold Production. International Journal of Engineering and Information Systems (IJEAIS), 2021, 5(5), 121-131. 17. Sultonov Kh.Sh., Berdiyarov B.T., Khojiev Sh.T., Ochildiev K.T. Improvement of the technology for obtaining activated carbon for gold sorption using angren coal. Proceedings of Uzbekistan-Japan International Conference on “Energy-Earth-Environment-Engineering”, Tashkent, November 17-18, 2022, 53. |
| 7 | 18. Galushko, D.A., Belenkiy, E.N., Alexandrova, L.N. The role of hepcidin in the development of anemia in patients with rheumatoid arthritis. Scientific and practical rheumatology, 2012, 52(3), 19-24. (in Russian) 19. Diagnosis and treatment of arterial hypertension: Russian recommendations. Systemic Hypertensions, 2010, 5-26. (in Russian) 20. Drozdov, V.N., Parfenov, A.I., Lishchinskaya, A.A. Clinical and diagnostic significance of the level of hepcidin in the regulation of iron metabolism in patients with inflammatory bowel diseases. Experimental and clinical gastroenterology, 2011, 10, 18-22. (in Russian) |