Version 1
: Received: 28 June 2024 / Approved: 29 June 2024 / Online: 1 July 2024 (11:35:16 CEST)
How to cite:
Terzić, A.; Stojanović, J.; Jovanović, V.; Todorović, D. Č.; Sokić, M.; Bojović, D.; Radulović, D. Exploring the Efficiency of Magnetic Separation and Gravity Concentration for Valorizing Pb-Zn Smelter Slag in a Circular Economy Framework. Preprints2024, 2024070016. https://doi.org/10.20944/preprints202407.0016.v1
Terzić, A.; Stojanović, J.; Jovanović, V.; Todorović, D. Č.; Sokić, M.; Bojović, D.; Radulović, D. Exploring the Efficiency of Magnetic Separation and Gravity Concentration for Valorizing Pb-Zn Smelter Slag in a Circular Economy Framework. Preprints 2024, 2024070016. https://doi.org/10.20944/preprints202407.0016.v1
Terzić, A.; Stojanović, J.; Jovanović, V.; Todorović, D. Č.; Sokić, M.; Bojović, D.; Radulović, D. Exploring the Efficiency of Magnetic Separation and Gravity Concentration for Valorizing Pb-Zn Smelter Slag in a Circular Economy Framework. Preprints2024, 2024070016. https://doi.org/10.20944/preprints202407.0016.v1
APA Style
Terzić, A., Stojanović, J., Jovanović, V., Todorović, D. Č., Sokić, M., Bojović, D., & Radulović, D. (2024). Exploring the Efficiency of Magnetic Separation and Gravity Concentration for Valorizing Pb-Zn Smelter Slag in a Circular Economy Framework. Preprints. https://doi.org/10.20944/preprints202407.0016.v1
Chicago/Turabian Style
Terzić, A., Dragan Bojović and Dragan Radulović. 2024 "Exploring the Efficiency of Magnetic Separation and Gravity Concentration for Valorizing Pb-Zn Smelter Slag in a Circular Economy Framework" Preprints. https://doi.org/10.20944/preprints202407.0016.v1
Abstract
The presented work offers a novel process scheme for valorizing historical Pb-Zn slag, which involves crushing, grinding, and then using separation techniques to concentrate valuable components (nonferrous metals). This methodology could have a significant impact on the global beneficiation of metallurgical slags since, in theory, it is significantly more simple, environmentally friendly, and cost-effective than standard pyrometallurgical or hydrometallurgical procedures. According to previous physicochemical and mineralogical studies, Pb-Zn slag from "Topilnica" Veles is a valuable secondary raw material. This inhomogeneous technogenic resource contains substantial amounts of nonferrous metals (Pb, Zn, Cu, and Ag). However, laboratory tests have indicated that the Pb-Zn slag contains a very uneven valuable metals amounts, ranging from several g/ton to several tens of g/ton. The main issue is that traditional metallurgical procedures for releasing beneficial elements are not commercially viable since the valuable elements are "trapped" within amorphous aluminosilicates or intergrowths of alloy grains and glassy phases. Gravity concentration (Wilfley 13 shaking table) and magnetic separation (Davis separator and disk separator) were used to obtain the final concentrate following comminution and grindability testing. The gravity concentration proved more effective. This streamlined approach of valorizing Pb-Zn slag can reduce the need for hazardous chemicals used in hydrometallurgical refinement operations, as well as the extremely high temperatures required for pyrometallurgical processing. This is the first investigation into the feasibility of this novel approach, which includes direct investigations of the Pb-Zn slag feed using these alternative technologies. After extracting the valuable metals, the amorphous aluminosilicate part of the Pb-Zn slag can be reapplied as an alternative raw material in the building sector, adding to the circularity of the suggested approach..
Keywords
alternative mineral raw materials; metallurgy; microstructural analysis; critical resources; nonferrous metals; zero waste
Subject
Chemistry and Materials Science, Materials Science and Technology
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
