New Process of Direct Metal Recovery from Drosses in the Aluminum Casthouse

Abstract

Traditional methods of aluminum recovery from drosses mean: transportation outside the casthouse, high, energy consumption and pollution problems by fumes and dumping of oxides and salt. The newly developed process permits extraction of liquid metal by simple compression of drosses. The recovery rate is better than any other known process, while cost is much lower. Industrial tests have established that aluminum extraction by compression can be carried out on drosses of all major alloys, and is compatible with standard remelt or alloying procedure of each casthouse or foundry. Further the metal can be recycled immediately in the same furnace.