Method for regenerating copper-containing aluminum alloy from aluminum alloy scrap

A method for regenerating different types of copper-containing aluminum alloys using aluminum alloy scrap, said method comprising:

• detecting a chemical composition of said aluminum alloy scrap and adding a suitable amount of a metal or alloy additive according to a composition requirement of a target aluminum-copper alloy, thereby obtaining a mixture of aluminum alloy scrap and metal or alloy additive;
• vacuum smelting the mixture of aluminum alloy scrap and metal or alloy additive in a vacuum furnace, wherein impurities are removed and an aluminum alloy solution is formed;
• filtering the aluminum alloy solution using a filter to obtain a melt comprising a target aluminum alloy composition;
• and
• casting the target aluminum alloy composition from said melt,
• wherein the metal or alloy additive is added with the aluminum alloy scrap before the step of vacuum smelting the mixture of aluminum alloy scrap and metal or alloy additive.