Adoption of Hydrogen as a Climate-Neutral Reducing Agent for Recovering Metals from Copper Slag
Loading...
Access rights
openAccess
CC BY
CC BY
publishedVersion
URL
Journal Title
Journal ISSN
Volume Title
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
This publication is imported from Aalto University research portal.
View publication in the Research portal (opens in new window)
View/Open full text file from the Research portal (opens in new window)
View publication in the Research portal (opens in new window)
View/Open full text file from the Research portal (opens in new window)
Unless otherwise stated, all rights belong to the author. You may download, display and print this publication for Your own personal use. Commercial use is prohibited.
Date
Major/Subject
Mcode
Degree programme
Language
en
Pages
Series
Metallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science, Volume 56, issue 2, pp. 1897–1913
Abstract
This study explores a sustainable approach for the recovery of metal values from copper slag using hydrogen (H2). The high-temperature isothermal reduction experiments were carried out under a controlled H2-Ar atmosphere and the subsequent molten slag extraction technique was employed. The elemental concentrations in both the metal/matte and the reduced slag were examined using inductively coupled plasma optical emission spectroscopy and electron probe microanalysis. It was found that the submerged H2 blowing technique has a superior impact to top surface blowing on recovering metals from copper slag due to improved mass and heat transfer in the slag. Approximately 65 pct of copper of the initial 1.19 wt pct can be reduced into copper alloy after reduction by submerged H2 blowing with the lowest concentration of 0.4 wt pct in slag. More than 90 pct of zinc and lead deported into the gas phase as metals. This research contributes to the ongoing efforts to enhance the sustainability of metallurgical processes and reduce their environmental footprint.Description
Publisher Copyright: © The Author(s) 2025.
Keywords
Other note
Citation
Chen, M, Sukhomlinov, D, Taskinen, P, Hamuyuni, J, Tiljander, M, Lindgren, M & Lindberg, D 2025, 'Adoption of Hydrogen as a Climate-Neutral Reducing Agent for Recovering Metals from Copper Slag', Metallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science, vol. 56, no. 2, pp. 1897–1913. https://doi.org/10.1007/s11663-025-03444-8