THERMALLY STABLE ALUMINUM ALLOY POWDER FOR EXTRACTION OF VALUABLE METALS FROM ELECTRIC ARC FURNACE DUST AND PROCESS FOR PRODUCTION OF ALUMINUM ALLOY POWDER

摘要

The present invention relates to aluminum alloy powder whose thermite reaction with manganese oxide (Mn_3O_4) reaches a same level as that of pure aluminum (Al) powder by replacing expensive aluminum (Al) powder used to extract highly pure ferromanganese, which is a valuable metal, from manganese oxide (Mn_3O_4) dust generated as a byproduct during the manufacturing process of ferromanganese; and a manufacturing method thereof. The aluminum alloy powder is an aluminum-manganese alloy powder comprising: 50-95 wt% of aluminum including 99-99.4 wt% of aluminum (Al), 0.4-0.6 wt% of iron (Fe), and 0.2-0.4 wt% of silicon (Si); and 5-50 wt% of ferromanganese including 80-82 wt% of manganese (Mn), 15-18 wt% of iron (Fe), 1.2-2 wt% of carbon (C), 0.003-0.01 wt% of sulfur (S), 0.01-1.11 wt% of oxygen (O), 0.07-0.14 wt% of nitrogen (N), 0.16-0.18 wt% of phosphorus (P), 0.03-0.06 wt% of aluminum (Al), 0.04-0.12 wt% of silicon (Si), and 0.06-0.09 wt% of chromium (Cr).