| 摘要 |
<p>The invention relates to a method for recovering lead and lead-alloying elements from battery-type lead waste products, and fractions thereof, such as battery mud, and similar oxidic-sulphatic materials. In accordance with the method, the waste products, together with a solid reduction agent, are introduced to a furnace in which the contents thereof can be vigorously agitated. The amount of solid reduction agent charged is selected so as to ensure the chemical reduction of substantially all the non-metallic lead contained by the waste products, and the alloying elements present therein. The material charged to the furnace is heated to a temperature of between about 1050 DEG C. and 1250 DEG C., while vigorously agitating the furnace contents, so as to melt, split-off and chemically reduce the waste products, to form a lead melt containing the aforementioned alloying elements. The furnace used is preferably a top-blown rotary converter of the Kaldo type, in which the furnace contents can be agitated by rotating the furnace.</p> |
