| 摘要 |
A method of separating vermiculite from the associated gangue is disclosed in which the ore is fed to the top of a rotating support comprising a grounded conductive underlayer and a nonconductive overlayer and the ore particles are pinned to the rotating support by ion bombardment. The gangue tends to separate first from the roll while the vermiculite particles have a greater tendency to remain pinned to the roll and can be collected as a separate fraction.
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