摘要:
In a method for recovering Al from an off-gas (3,4) produced during carbothermic reduction of aluminum utilizing at least one smelter (1,2), the off-gas (3,4) is directed to an enclosed reactor (5) which is fed a supply of wood charcoal (7) having a porosity of from about 50 vol. % to 85 vol. % and an average pore diameter of from about 0.05 μm to about 2.00 μm, where the wood charcoal (7) contacts the off-gas (3,4) to produce at least Al4C3 (6), which is passed back to the smelter (1,2).
摘要翻译:在利用至少一个冶炼厂(1,2)在铝的碳热还原期间从废气(3,4)中回收Al的方法中,废气(3,4)被引导到封闭的反应器(5) ),其供给具有约50体积的孔隙率的木炭(7)供应。 %至85体积 %,平均孔径为约0.05μm至约2.00μm,其中木炭(7)接触废气(3,4)以产生至少Al 4 C 3(6),其返回到冶炼炉( 1,2)。