Our patented invention: the secondary aluminum and scrap melting furnace with automatic Al-Fe separation system. Using this furnace,no preliminary breaking or selecting step is needed, neither the additon of salt flux. With this furnace, the melting process can avoid an increase of iron content in the aluminum, although the scraps contain high-level iron parts, and have an efficient Al-Fe separation as well as low metal loss. Furthermore, the combustion of various combustible matters in the scrap results in a lower energy consumption.