According to the preparation and quality status of scrap aluminum materials and the technical requirements of recycled products, the mix is selected and the dosage of each type of material is calculated. The ingredients should consider the degree of oxidation burning loss of the metal. The oxidation burning loss of silicon and magnesium is greater than that of other alloying elements.
The burning loss rate of various alloying elements should be determined through experiments in advance. The physical specifications and surface cleanliness of scrap aluminum will directly affect the quality of recycled products and the actual metal yield. For scrap aluminum that is not clean of oil, up to 20% of the active ingredients will enter the slag.
The deformed aluminum alloys that can be produced from scrap aluminum alloys include 3003, 3105, 3004, 3005, 5050, etc., among which 3105 alloy is mainly produced. In order to ensure that the chemical composition of the alloy material meets the technical requirements and the process needs of pressure processing, a portion of primary aluminum ingots should be added when necessary.