method of using selected carbons to react with al2o and al vapors in carbothermal aluminum production

摘要

"METHOD OF USING CARBON SELECTED TO REACT WITH AL ~ 2 ~ O AND AL VAPORS IN ALUMINUM CARBOTHERMIC PRODUCTION". The present invention relates to a method for recovering Al from a butt gas (3,4) produced during carbothermal reduction of aluminum using at least one reducing melting furnace (1,2), butt gas (3, 4) is directed to a closed reactor (5) which is supplied with a charcoal supply (7) having a porosity of about 50% by volume to 85% by volume and an average pore diameter of about 0.05 109 m about 2.00 109 m, where charcoal (7) contacts the top gas (3.4) to produce at least Al ~ 4 ~ C ~ 3 ~, which is returned to the melting furnace (1,2).