Md Khairul Islam, Michael Somerville
Printed circuit boards (PCBs) from antiquated electronic goods were processed by a pyrometallurgical route to produce and separate alloy and slag phases. The process involved initial size reduction of PCBs, followed by pyrolysis at 500 °C for 6 h and finally smelting of the solid materials in an electric furnace. A preliminary smelting test was performed at 1600 °C to estimate the composition of the slag generated. In later kilogram-scale smelting experiments, B₂O₃ flux was added along with CaO and SiO₂ to decrease the liquidus temperature required to smelt the PCBs. The level of fluxing was adapted from earlier phase equilibria studies of the CaO-Al₂O₃-SiO₂-B₂O₃ slag system. Results showed that the flux decreased the melting temperature and assisted the recovery of most valuable metals within the alloy phase at 1350 °C smelting temperature. The alloy phase recovered 99.8% of Cu, 99% of Sn, and 100% of precious metals (Au, Ag, Pt). A flushing strategy for smelting high Al₂O₃ containing e-waste PCBs was proposed based on the experimental findings of this research.
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title={Deportment of Metals from E Waste PCBs t},
author={Md Khairul Islam and Michael Somerville},
year={2026},
language={en}
}TY - JOUR TI - Deportment of Metals from E Waste PCBs t AU - Md Khairul Islam AU - Michael Somerville PY - 2026 LA - en ER -
Printed circuit boards (PCBs) from electronic gadgets at the end of their useful life period are currently being dumped in landfills or incinerated, c
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