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Meeting 2021 TMS Annual Meeting & Exhibition
Symposium Materials Processing Fundamentals
Presentation Title Thermodynamic Modeling of Iron-copper-sulfuric Acid Solutions during Solvent Extraction and Electrowinning for Copper Production
Author(s) Jiahao Xu, Guikuan Yue
On-Site Speaker (Planned) Jiahao Xu
Abstract Scope Solvent Extraction and Electrowinning (SX/EW) play an important role during the hydrometallurgical production of copper for low grade ores. To better understand the rapid Cu extraction/strip kinetics for producing a high-purity CuSO4-H2SO4 electrolyte and elucidate the method to maximize current efficiency by preventing leach carryover to electrolyte during SX and minimizing the iron concentration, a detailed speciation study is required to quantitatively describe the iron and copper distribution in the SX/EW solutions. In the present study, by virtue of our previous modeling work, thermodynamic modeling of the SX/EW solutions is carried out to quantify the distribution of iron (ferric and ferrous), copper and sulfuric acid. The developed model provides a mathematical tool capable of quantifying the concentrations of free ions and complexes in terms of temperature (25C-60C) and solution composition under simulated industrial conditions. Finally, oxidation reduction potential measurements are employed to validate the model.
Proceedings Inclusion? Planned:
Keywords Hydrometallurgy,


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