METHOD AND APPARATUS FOR RECOVERING METAL FROM ELECTRIC FURNACE DUST

摘要

Obtained are a method and an apparatus for recovering a metal from electric furnace dust, which are capable of recovering the metal with high efficiency without causing problems such as occlusion of the apparatus. An apparatus (1) for recovering a metal from electric furnace dust of the present invention, which recovers molten iron and zinc oxide by melting and reducing electric furnace dust, which contains not less than 12% by mass of a chlorine content and a zinc content in total, mainly by electrical energy. The apparatus (1) for recovering a metal from electric furnace dust comprises: a melting/reduction furnace (3); a secondary combustion chamber (5) in which the exhaust gas from the melting/reduction furnace (3) is caused to form an upward flow at an ascending rate of 0.5-2.0 m/s (inclusive); a coarse-grained dust recovery device (7) for recovering coarse-grained dust that settles in the lower part of the secondary combustion chamber (5); and a fine dust recovery device (9) which is disposed on the exhaust gas exit side of the secondary combustion chamber (5) for the purpose of recovering fine dust.