| 摘要 |
<p>In a method for processing used cathode material containing carbon, in particular used cathode troughs from aluminum production, wherein the cathode material is put into a shaft furnace and, in order to gasify carbon, is subjected to a thermal treatment in the shaft furnace at a temperature above the ignition temperature of the carbon and above the evaporation temperature of toxic substances contained in the used cathode material, the reaction gases are conducted cocurrent with the carbon in a first longitudinal section of the shaft furnace and countercurrent to the carbon in a second longitudinal section of the shaft furnace, wherein the reaction gases are drawn from a region of the shaft furnace having an enlarged cross-section between said longitudinal sections and are preferably subjected to an aftertreatment.</p> |
