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COBALT RECOVERY FROM SOUTHERN AFRICAN COPPER SMELTERS

R. T. Jones, C. Pawlik

2023encobaltcoppersmeltingafricarecovery

Abstract

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Cobalt occurs together with copper in the southern African copper belt, and a large portion of this cobalt ends up in copper smelting slags, mostly dissolved in oxide form. This study aims to investigate the recovery of cobalt from copper smelting slags using reductive smelting and hydrometallurgical processes. A high recovery rate of cobalt, approximately 80%, was observed through reductive smelting in a 40 MW DC arc furnace operated at Chambishi Metals in Zambia from 2001 to 2008, producing an iron-rich alloy containing copper and cobalt. The alloy was subsequently atomized before leaching. With the recent surge in cobalt demand driven by rising metal prices and its critical role in rechargeable lithium-ion batteries, interest in these recovery processes has heightened. This paper analyzes the most effective processes for cobalt recovery from slags, discussing the advantages and disadvantages associated with each option, including trade-offs between capital costs, operational expenses, and environmental impacts. Ultimately, the findings highlight the potential for enhanced cobalt recovery as a means to optimize resource utilization in the southern African copper industry.

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Cite This Work

@article{046b685c-7e40-4412-bb53-7b832d511571,
  title={COBALT RECOVERY FROM SOUTHERN AFRICAN COPPER SMELTERS},
  author={R. T. Jones and C. Pawlik},
  year={2023},
  language={en}
}
TY  - JOUR
TI  - COBALT RECOVERY FROM SOUTHERN AFRICAN COPPER SMELTERS
AU  - R. T. Jones
AU  - C. Pawlik
PY  - 2023
LA  - en
ER  -

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