Swell-peeling method for aluminum can paints

摘要

The recycling of used aluminum beverage cans (UBCs) into can body material is the main recycling method for aluminum products. However, in the remelting of UBCs, "paints" remain as an unfavorable molten metal residue (primarily titanium) and lower molten metal yield. This paper reports the application of a swell-peeling method in which paints are chemically removed. It also reports on a swell-peeling method that successfully improves molten metal yield and prevents the impurity element titanium from contaminating molten metal simultaneously.