| 摘要 |
A method of treating a refuse fraction to separate a desired valuable constituent, such as a glass concentrate, is disclosed in which a particulate refuse fraction comprising glass, stones, metal and the like is fed to the top of a rotating support comprising a grounded conductive underlayer and a nonconductive overlayer and the particles are pinned to the rotating support by ion bombardment. The stone and metal particles tend to separate first from the roll while the glass particles have a greater tendency to remain pinned to the roll and can be collected as a separate fraction.
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