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Collective Recovery of Copper and Silver from Secondary Copper Electrolytic Refining Slimes. Part 2

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Metallurgist Aims and scope

In this study, we investigate the effect of low-temperature leaching modes to leach copper and silver from secondary copper electrolytic refining slime with sulfuric acid solution.

Promising fields for intensification of the leaching process of secondary copper electrolytic refining slime , namely preliminary oxidizing roasting and microwave processing, are determined. The influence of firing temperature (500°C–800°C) on the characteristics of calcines and recovery of copper and silver into sulfuric acid solution in the presence of hydrogen peroxide are studied. The formation of new phases in a temperature range of 500°C–800°C, namely silver-containing copper hydroxosulfate, lead- containing barite, and copper oxide, at firing temperature more than 700°C is revealed. The maximum copper and silver recovery into the leaching solution from the slime is 96.40% and 84.10%, respectively. Regression equations of the effect of microwave treatment power (300–530 W) and duration (5–9 min) on copper and silver recovery into the leaching solution are determined via mathematical planning of the experiment. In the studied factor-variation intervals, the maximum recovery of copper and silver into the leaching solution is 96.74% and 35.72%, respectively.

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Notes

  1. The authors express their gratitude to the Director General of PROMTEHRECIKLING Nikolay Vasilyevich Taran for providing a sample for research.

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Authors and Affiliations

  1. National University of Science and Technology “MISIS”, Moscow, Russia

    S. O. Vydysh & E. V. Bogatyreva

  2. LLC “LIT” GC “Skygrad”, Korolev, Russia

    Zh. N. Galieva

  3. LLC “Skygrad Innovations” GC “Skygrad”, Korolev, Russia

    A. A. Semenov

Authors
  1. S. O. Vydysh
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  2. E. V. Bogatyreva
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  3. Zh. N. Galieva
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  4. A. A. Semenov
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Correspondence to S. O. Vydysh.

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Translated from Metallurg, Vol. 67, No. 6, pp. 107–114, June, 2023.

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Vydysh, S.O., Bogatyreva, E.V., Galieva, Z.N. et al. Collective Recovery of Copper and Silver from Secondary Copper Electrolytic Refining Slimes. Part 2. Metallurgist 67, 857–871 (2023). https://doi.org/10.1007/s11015-023-01573-6

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  • DOI: https://doi.org/10.1007/s11015-023-01573-6

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