EVALUATION OF ACID–SILICATE REACTION THERMODYNAMICS IN COPPER PROCESSING RESIDUES OF THE ALMALYK MINING AND METALLURGICAL COMBINE

Authors

  • Aripova Mastura Xikmatovna, Rakhmanov Ilkhom Uralbay ugli, Khojiev Shokhrukh Toshpulatovich Tashkent Chemical-Technological Institute, DSc, Professor, Tashkent, Uzbekistan, Tashkent Chemical-Technological Institute, Basic Doctoral Student (PhD Candidate), Tashkent, Uzbekistan , Almalyk State Technical Institute, PhD, Associate Professor, Almalyk, Uzbekistan

DOI:

https://doi.org/10.55640/

Keywords:

Silicate residues, Sulfuric acid leaching, Thermodynamics, Copper beneficiation waste, Gibbs free energy.

Abstract

This study investigates the thermodynamic behavior of silicate materials derived from the waste of the Second Copper Beneficiation Plant of the Almalyk Mining and Metallurgical Combine (AMMC) during their interaction with sulfuric acid. The residues, primarily composed of Fe₂SiO₄, Al₂O₃·SiO₂, CaSiO₃, and minor metal silicates, were analyzed to evaluate their chemical reactivity and dissolution feasibility. Gibbs free energy (ΔG°), enthalpy (ΔH°), and entropy (ΔS°) changes were calculated across the temperature range of 298–373 K. The results indicate that iron-, copper-, and zinc-bearing silicates are thermodynamically favorable for acid leaching, whereas aluminosilicate and alkali silicates remain largely inert. The findings provide a theoretical basis for developing environmentally sustainable hydrometallurgical processes for secondary metal recovery from silicate-rich copper beneficiation wastes.

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References

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Published

2025-11-19

Issue

Vol. 4 No. 10 (2025): Journal of Multidisciplinary Sciences and Innovations

Section

Articles

License

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This work is licensed under a Creative Commons Attribution 4.0 International License.

Authors retain the copyright of their manuscripts, and all Open Access articles are disseminated under the terms of the Creative Commons Attribution License 4.0 (CC-BY), which licenses unrestricted use, distribution, and reproduction in any medium, provided that the original work is appropriately cited. The use of general descriptive names, trade names, trademarks, and so forth in this publication, even if not specifically identified, does not imply that these names are not protected by the relevant laws and regulations.

How to Cite

EVALUATION OF ACID–SILICATE REACTION THERMODYNAMICS IN COPPER PROCESSING RESIDUES OF THE ALMALYK MINING AND METALLURGICAL COMBINE. (2025). Journal of Multidisciplinary Sciences and Innovations, 4(10), 1462-1468. https://doi.org/10.55640/

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