Characterization, Concentration, and Speciation of Metal Elements in Copper Slag: Implications for Secondary Metal Recovery

Author:

Liu Zirou1,Xu Xinhang1,Guo Li1,Chen Qiusong1,Qi Chongchong12ORCID

Affiliation:

1. School of Resources and Safety Engineering, Central South University, Changsha 410083, China

2. School of Metallurgy and Environment, Central South University, Changsha 410083, China

Abstract

The treatment of large amounts of copper slag is an unavoidable issue resulting from the high demand for copper during the global transition to a sustainable development path. Metal-rich copper slag might serve as a potential source of metals through secondary recovery. In this study, two copper slags (CS1 and CS2) with different metallurgical properties were characterized, focusing on secondary metal recovery. The X-ray diffraction (XRD) results show that fayalite (Fe2SiO4) and magnetite (Fe3O4) were the main crystalline phases in both CS1 and CS2. In addition, CS2 exhibited a more stable amorphous silicate network than CS1, which was attributed to the differences in the content of Si-O-3NBO linkages. The sequential extraction of Zn, Cu, Fe, and Pb from the slags was also explored, with the Cu content in CS1 being substantially lower than that in CS2. All metals were distributed in the F5 residue fraction. Cu was the most mobile metal as a result of the large proportion of soluble fractions (F1–F3), followed by Zn and Fe. This study explored the chemical speciation of Zn, Cu, Fe, and Pb from copper slags, which has practical implications for secondary metal recovery from such materials.

Funder

National Natural Science Foundation of China

Publisher

MDPI AG

Reference89 articles.

1. What drives the solar energy transition? The effect of policies, incentives and behavior in a cross-country comparison;Colasante;Energy Res. Soc. Sci.,2022

2. Evaluation of econometric models of secondary refined copper supply;Rivera;Resour. Policy,2021

3. The initial stages of cement hydration at the molecular level;Xu;Nat. Commun.,2024

4. Hund, K., La Porta, D., Fabregas, T.P., Laing, T., and Drexhage, J. (2020). Minerals for Climate Action: The Mineral Intensity of the Clean Energy Transition, World Bank.

5. The impact of copper scarcity on the efficiency of 2050 global renewable energy scenarios;Harmsen;Energy,2013

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