STUDY THERMODYNAMICS OF THE MAGNETITE SULFIDATION IN COPPER SMELTING PROCESSES

Authors

A S. Khasanov, Almalyk Mining and Metallurgical Combine
Q T. Ochildiyev, Tahkent State Technical University named after Islam Karimov
B T. Berdiyarov, Tashkent State Technical University named after Islam Karimov
Sh T. Khojiev, Almalyk Mining and Metallurgical Combine
S T. Matkarimov, Tashkent State Technical University named after Islam Karimov

Abstract

The article discusses the problem of reducing the amount of magnetite in the impregnation of copper in the slag generated after the conversion process in copper production in the furnace to reduce slag. Accordingly, a method of lowering magnetite by sulfidation has been proposed, using elemental sulfur as a local and relatively inexpensive sulfiding-reducing agent. The mechanism of chemical phenomena occurring in the interaction regions of magnetite and elemental sulfur has been developed. Based on the mechanism of chemical reactions produced, each chemical reaction that occurs in the process is analysed from a thermodynamic point of view. According to the results of thermodynamic analysis, the limiting stage between the chemical reactions that take place in the system of magnetite and elemental sulfur is the sulfidation reaction of magnetite before the formation of wustite. Due to this, the temperature required for complete sulfidation of magnetite was 1275 oC. At this temperature, the equilibrium constants of all chemical reactions have high values, as evidenced by the study of the kinetics of the process.

First Page

19

Last Page

27

DOI

https://doi.org/10.51346/tstu-01.22.2-77-0171

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Recommended Citation

Khasanov, A S.; Ochildiyev, Q T.; Berdiyarov, B T.; Khojiev, Sh T.; and Matkarimov, S T. (2022) "STUDY THERMODYNAMICS OF THE MAGNETITE SULFIDATION IN COPPER SMELTING PROCESSES," Technical science and innovation: Vol. 2022: Iss. 2, Article 2.
DOI: https://doi.org/10.51346/tstu-01.22.2-77-0171
Available at: https://btstu.researchcommons.org/journal/vol2022/iss2/2