Pyro-Refining of Mechanically Treated Waste Printed Circuit Boards in a DC Arc-Furnace
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2018
Authors
Kamberović, Željko
Ranitović, Milisav

Korać, Marija

Jovanović, Nikola

Tomović, Božidar
Gajić, Nataša

Article (Published version)

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This paper presents the results of theoretical assessment and a preliminary experimental investigation of the modified pyrometallurgical processing of metallic granulate obtained after mechanical treatment of waste printed circuit boards (WPCBs). The studied two-step process included oxidation of metallic granulate followed by pyrometallurgical refining in a DC arc-furnace. In the investigated process, the oxygen bounded in metal oxides, obtained during the oxidation annealing of granulate, was used as a "solid" oxidizer for subsequent pyrometallurgical refining in a DC arc-furnace. According to the obtained results, the Cu content in the produced metallic phase (anodic copper) was 98.4% and is suitable for further electro-refining process. In addition, over 94% of Au was concentrated in metallic phase, suggesting that a high Au yield could be attained. However, owing to the distribution between slag phase and filter product, only 60% of Ag was collected in the metal phase. In-between ...metal and slag is the metal-oxide phase, containing Cu with metals impurities, such as Sn and Pb, which was obtained as well, and could be further treated using conventional processes for additional metal valorization. The investigated concept would allow substitution of the long-lasting oxygen blowing process and application of complicated pyrometallurgical reactors and create a feasible alternative for lower operating capacities.
Keywords:
WPCBs / Metallic granulate / Recycling / Pyrometallurgy / Oxidative refiningSource:
Journal of Sustainable Metallurgy, 2018, 4, 2, 251-259Publisher:
- Springer, New York
Funding / projects:
- Innovative synergy of by-products, waste minimization and clean technologies in metallurgy (RS-34033)
DOI: 10.1007/s40831-018-0167-3
ISSN: 2199-3823
WoS: 000435065900010
Scopus: 2-s2.0-85064155264
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Tehnološko-metalurški fakultetTY - JOUR AU - Kamberović, Željko AU - Ranitović, Milisav AU - Korać, Marija AU - Jovanović, Nikola AU - Tomović, Božidar AU - Gajić, Nataša PY - 2018 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4018 AB - This paper presents the results of theoretical assessment and a preliminary experimental investigation of the modified pyrometallurgical processing of metallic granulate obtained after mechanical treatment of waste printed circuit boards (WPCBs). The studied two-step process included oxidation of metallic granulate followed by pyrometallurgical refining in a DC arc-furnace. In the investigated process, the oxygen bounded in metal oxides, obtained during the oxidation annealing of granulate, was used as a "solid" oxidizer for subsequent pyrometallurgical refining in a DC arc-furnace. According to the obtained results, the Cu content in the produced metallic phase (anodic copper) was 98.4% and is suitable for further electro-refining process. In addition, over 94% of Au was concentrated in metallic phase, suggesting that a high Au yield could be attained. However, owing to the distribution between slag phase and filter product, only 60% of Ag was collected in the metal phase. In-between metal and slag is the metal-oxide phase, containing Cu with metals impurities, such as Sn and Pb, which was obtained as well, and could be further treated using conventional processes for additional metal valorization. The investigated concept would allow substitution of the long-lasting oxygen blowing process and application of complicated pyrometallurgical reactors and create a feasible alternative for lower operating capacities. PB - Springer, New York T2 - Journal of Sustainable Metallurgy T1 - Pyro-Refining of Mechanically Treated Waste Printed Circuit Boards in a DC Arc-Furnace EP - 259 IS - 2 SP - 251 VL - 4 DO - 10.1007/s40831-018-0167-3 ER -
@article{ author = "Kamberović, Željko and Ranitović, Milisav and Korać, Marija and Jovanović, Nikola and Tomović, Božidar and Gajić, Nataša", year = "2018", abstract = "This paper presents the results of theoretical assessment and a preliminary experimental investigation of the modified pyrometallurgical processing of metallic granulate obtained after mechanical treatment of waste printed circuit boards (WPCBs). The studied two-step process included oxidation of metallic granulate followed by pyrometallurgical refining in a DC arc-furnace. In the investigated process, the oxygen bounded in metal oxides, obtained during the oxidation annealing of granulate, was used as a "solid" oxidizer for subsequent pyrometallurgical refining in a DC arc-furnace. According to the obtained results, the Cu content in the produced metallic phase (anodic copper) was 98.4% and is suitable for further electro-refining process. In addition, over 94% of Au was concentrated in metallic phase, suggesting that a high Au yield could be attained. However, owing to the distribution between slag phase and filter product, only 60% of Ag was collected in the metal phase. In-between metal and slag is the metal-oxide phase, containing Cu with metals impurities, such as Sn and Pb, which was obtained as well, and could be further treated using conventional processes for additional metal valorization. The investigated concept would allow substitution of the long-lasting oxygen blowing process and application of complicated pyrometallurgical reactors and create a feasible alternative for lower operating capacities.", publisher = "Springer, New York", journal = "Journal of Sustainable Metallurgy", title = "Pyro-Refining of Mechanically Treated Waste Printed Circuit Boards in a DC Arc-Furnace", pages = "259-251", number = "2", volume = "4", doi = "10.1007/s40831-018-0167-3" }
Kamberović, Ž., Ranitović, M., Korać, M., Jovanović, N., Tomović, B.,& Gajić, N.. (2018). Pyro-Refining of Mechanically Treated Waste Printed Circuit Boards in a DC Arc-Furnace. in Journal of Sustainable Metallurgy Springer, New York., 4(2), 251-259. https://doi.org/10.1007/s40831-018-0167-3
Kamberović Ž, Ranitović M, Korać M, Jovanović N, Tomović B, Gajić N. Pyro-Refining of Mechanically Treated Waste Printed Circuit Boards in a DC Arc-Furnace. in Journal of Sustainable Metallurgy. 2018;4(2):251-259. doi:10.1007/s40831-018-0167-3 .
Kamberović, Željko, Ranitović, Milisav, Korać, Marija, Jovanović, Nikola, Tomović, Božidar, Gajić, Nataša, "Pyro-Refining of Mechanically Treated Waste Printed Circuit Boards in a DC Arc-Furnace" in Journal of Sustainable Metallurgy, 4, no. 2 (2018):251-259, https://doi.org/10.1007/s40831-018-0167-3 . .