| 摘要 |
<p>PURPOSE:To recover Al by subjecting an Al waste material to rough cutting and further to chipping and then successively applying magnetic separation and separation by means of air and vibration to the above to efficiently remote foreign matter. CONSTITUTION:The Al waste material (Al sash, etc.) is roughly cut to about 400-500mm length by means of a guillotine-type cutter, etc., and further chipped to about 5-20mm length. Subsequently, the resulting chips are introduced into a magnetic separator to undergo the removal of ferromagnetic foreign matter (generally iron) by means of magnetic separation, and then, the above chips are separated into Al chips and the other foreign matter by means of a separator using air and vibration. By this method, the Al chips can be efficiently recovered at a low cost while obviating the necessity of heating and chemical treatment.</p> |
