Abstract
This article characterizes electronic scrap in terms of origin and composition and describes the steps in preliminary processing: sorting, calcination, combustion, shredding, and sampling. Hydrometallurgical and pyrometallurgical process technologies for the concentration and recovery of precious-metals values in scrap are reviewed, and some downstream processing options are outlined. The article concludes with some caveats concerning the risky but potentially profitable business of recovery of precious metals from electronic scrap.
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