MATERIALS TRANSACTIONS
Online ISSN : 1347-5320
Print ISSN : 1345-9678
A Novel Process for Extracting Precious Metals from Spent Mobile Phone PCBs and Automobile Catalysts
Byung-Su KimJae-Chun LeeJinki JeongDong-Heo YangDoyun ShinKang-In Lee
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2013 Volume 54 Issue 6 Pages 1045-1048

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Abstract

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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© 2013 The Japan Institute of Metals and Materials
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