Pyro-Refining of Mechanically Treated Waste Printed Circuit Boards in a DC Arc-Furnace

Kamberović, Željko; Ranitović, Milisav; Korać, Marija; Jovanović, Nikola; Tomović, Božidar; Gajić, Nataša

doi:10.1007/s40831-018-0167-3

Cited by 11 publications

(4 citation statements)

References 10 publications

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“…Metals distribution tendencies were analyzed from the theoretical and experimental perspectives. Theoretical analysis was based on the thermodynamic calculations performed using the HSC Chemistry software [16]. Experimental investigations were performed by analyzing the composition of each of the phases (metalslag-filter) obtained in smelting tests, which corresponded to the secondary production of lead, copper, and steel.…”

Section: Methodsmentioning

confidence: 99%

Recyclability of technology metals from e-waste: case study of In and Ga recovery from magnetic fraction

et al. 2019

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This study presents the results of the theoretical assessment and a preliminary experimental investigation of technology metals (TM) recovery from magnetic fraction obtained after mechanical treatment of waste printed circuit boards (WPCBs). Experimental work included physical and chemical characterization, thermodynamic analysis, and pyrometallurgical tests corresponding to secondary lead, copper, and steel metallurgy. Technology metals recyclability and recovery potential were evaluated with respect to their distribution between metal and slag phase (difficult for recovering) versus the dust phase (easy for recovering). According to obtained results, it was determined that high-temperature processing of magnetic fraction in the electric arc furnace promotes volatilization of the TM and their pre-concentration in the filter as a dust product from which they could be valorized using further hydrometallurgical methods.

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Section: Methodsmentioning

confidence: 99%

Recyclability of technology metals from e-waste: case study of In and Ga recovery from magnetic fraction

et al. 2019

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“…However, the abundance of copper and ferrous alloys in e-waste poses a problem related to reagent consumption and interference of Cu 2+ during recovery [42]. One approach to address this problem is sulfuric acid leaching for the recovery of copper and iron alloys prior to gold extraction with cyanide or aqua regia [43]. However, the use of cyanide and aqua regia is becoming increasingly unpopular due to environmental concerns, so alternative leaching agents have been investigated since 2000.…”

Section: Hydrometallurgymentioning

confidence: 99%

Cu recovery from E-wastes

Sharifidarabad

2024

Copper Overview - From Historical Aspects to Applications

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Due to technological development and increased production efficiency in all industries, recovery of metals from secondary sources is one of the most important issues. Copper is used in a variety of residential and industrial applications, including power generation and transmission (infrastructure), building wiring, transportation, industrial machinery, commercial durables, and electrical and electronic products due to its unique physical and chemical properties, such as high ductility, malleability, electrical and thermal conductivity, and excellent corrosion resistance. For these reasons, electronic waste is a well-known secondary resource rich in copper. This topic focuses on the statistical study of electronic waste and the metals it contains, the mineralogical and elemental identification of copper in electronic waste, and the study of the steps and methods for recovering copper from electronic waste, especially pyrometallurgy, hydrometallurgy, biohydrometallurgy, and their combination.

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“…There are a number of publications in the literature related to the thermodynamics and kinetics of copper refining from impurities at atmospheric pressure [ 5 , 17 , 18 , 19 ]. Results of the modified pyrometallurgical processing of waste printed circuit boards were presented in [ 18 ], while pyrometallurgical refining of copper in an anode furnace was studied in [ 5 ] in order to improve the process. The behavior of tin and antimony was experimentally studied in secondary copper pyrometallurgical smelting conditions [ 19 ].…”

Section: Introductionmentioning

confidence: 99%

Behaviour of Impurities during Electron Beam Melting of Copper Technogenic Material

et al. 2022

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The current study presents the electron beam melting (EBM) efficiency of copper technogenic material with high impurity content (Se, Te, Pb, Bi, Sn, As, Sb, Zn, Ni, Ag, etc.) by means of thermodynamic analysis and experimental tests. On the basis of the calculated values of Gibbs free energy and the physical state of the impurity (liquid and gaseous), a thermodynamic assessment of the possible chemical interactions occurring in the Cu-Cu2O-Mex system in vacuum in the temperature range 1460–1800 K was made. The impact of the kinetic parameters (temperature and refining time) on the behaviour and the degree of removal of impurities was evaluated. Chemical and metallographic analysis of the obtained ingots is also discussed.

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Pyro-Refining of Mechanically Treated Waste Printed Circuit Boards in a DC Arc-Furnace

Cited by 11 publications

References 10 publications

Recyclability of technology metals from e-waste: case study of In and Ga recovery from magnetic fraction

Recyclability of technology metals from e-waste: case study of In and Ga recovery from magnetic fraction

Cu recovery from E-wastes

Behaviour of Impurities during Electron Beam Melting of Copper Technogenic Material

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