期刊
MATERIALS TRANSACTIONS
卷 54, 期 6, 页码 1045-1048出版社
JAPAN INST METALS
DOI: 10.2320/matertrans.M2013051
关键词
precious metals; spent mobile phone printed circuit boards (PCBs); spent honeycomb-type auto catalysts; smelting; waste-copper slag; recycling
资金
- Basic Research Project of the Korea Institute of Geoscience and Mineral Resources (KIGAM)
- Ministry of Knowledge Economy of Korea
A novel process to simultaneously extract the precious metals such as gold, silver, platinum, palladium and rhodium from spent mobile phone printed circuit boards (PCBs) and honeycomb-type auto catalysts by smelting using waste-copper slag without adding any collector metals or by-products such as dross, matte and slime has been developed. In the process, waste-copper slag which is an industrial waste discharged from copper smelter is used not only as a flux for controlling slag composition, but also as a collector metal for capturing precious metals, and a plastic component contained in spent mobile phone PCBs is done as a reducing agent of iron oxides contained in the waste-copper slag. Using the developed process, up to 95% of gold, silver, platinum, palladium and rhodium contained in the raw materials were extracted in a Cu-Fe-Sn alloy phase, respectively.
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