| 摘要 |
<p>An improved method for recovering metals, particularly aluminium, from slag without requiring any addition of flux salts, which method is far safer than existing methods, particularly those using electron torches to heat the slag being processed. According to the method, the slag is placed in a rotary or tilting furnace and heated to a temperature above the melting point of aluminium while the furnace is rotated or tilted to facilitate separation of the metal. The aluminium thereby separated is removed from the furnace, whereafter the remaining slag is also removed. Said method is characterized in that the furnace used is a radiant arc furnace including two opposite, preferably graphite electrodes between which an electric arc is formed and sustained to provide heating.</p> |
