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Modeling of Au Chlorination Leaching Kinetics from Copper Anode Slime

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Abstract

This study showed the kinetics of gold chlorination leaching from an anode slime complex containing copper, silver, barium, selenium, and tellurium. AgCl and BaSO4 control the rate of gold leaching, and the interface transfer and diffusion across the product was selected as the desirable kinetic model. The concentration of hydrochloric acid, chlorine gas flow rate, pulp density, and temperature have been precisely studied. The results showed that temperature and hydrochloric acid have a favorable influence on the leaching rate. However, the chlorine gas flow rate is inactive in the reaction rate. Furthermore, the leaching rate decreased with an increasing pulp density. The leaching process was controlled by the interface transfer and diffusion across the product, and the activation energy was determined to be 13.66 kJ mol–1.

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Authors and Affiliations

  1. Department of Materials and Metallurgical Engineering, Amirkabir university of Technology (Tehran polytechnic), Tehran, Iran

    Molood Saeedi, Nima Sadeghi & Eskandar Keshavarz Alamdari

Authors
  1. Molood Saeedi
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  2. Nima Sadeghi
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  3. Eskandar Keshavarz Alamdari
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Contributions

Nima Sadeghi: designed the study, planned the methodology, and wrote the manuscript.

Molood Saeedi: performed the experiments, the logical interpretation and presentation of the results, and the literature review.

Eskandar Keshavarz Alamdari: supervised the course of the project and reviewed the article before submission.

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Correspondence to Nima Sadeghi.

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Saeedi, M., Sadeghi, N. & Alamdari, E.K. Modeling of Au Chlorination Leaching Kinetics from Copper Anode Slime. Mining, Metallurgy & Exploration 38, 2559–2568 (2021). https://doi.org/10.1007/s42461-021-00482-z

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  • DOI: https://doi.org/10.1007/s42461-021-00482-z

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