Method of treating aluminum dross residue

摘要

In a method of treating an aluminum dross residue by heating the aluminum dross residue within a heating furnace while supplying an oxidizing gas, a p air of electrodes 30, 40 are arranged opposite to each other within a furnace body 1 so that an electric arc is generated between the both to heat the furnace body 1, th e furnace body 1 is heated to a prescribed reaction temperature in the state keeping a n inert gas atmosphere, the oxidizing gas is supplied into the furnace while rotating th e furnace body 1 around its own axis to heat the content, the oxygen concentration in the exhaust gas from the furnace is measured, and the heating treatment is termi nated on the basis of the measured value. According to this method, aluminum nitri de or the like in an aluminum dross residue can be oxidized and removed with a min imum heating, and exhaust gas can be also minimized.