| 摘要 |
<p>PURPOSE: To easily recover metallic aluminum, in high yield at a low cost, from recently increasing metallic-aluminum-containing wastes, such as aluminum can, aluminum laminate foil, aluminum scrap, aluminum chip, and other materials containing (or accompanied by) metallic aluminum. CONSTITUTION: A material containing metallic aluminum is put into a kiln with an atmosphere of 300-600 deg.C, having <=10vol.% oxygen concentration or consisting of gaseous atmosphere of carbon dioxide, to carbonize combustibles. After cooling, carbides and iron are separated by means of screening, magnetic separation, etc.</p> |
