Abstract Scope |
Aluminium is used in packaging due to it’s density, strength and preservative capabilities. The paper outlines a methodology to evaluate the recyclability of aluminium waste, where parameters of scrap type, pre-treatment and remelting conditions are alternated with measurements of yield and analysis of metal quality.
Aluminium waste from mixed household waste, Cans, will be presented in detail. Cans were decoated at 300C and 550C. The decoated material was then remelted, 4 additions of ∼ 2kg per experiment, by submersion into the molten melt. Porosity, inclusion content and alloy composition was analysed to determine metal quality.
The experiments results show that yield of remelting, dross formation relative to melted sample material, and the chemical composition depend on decoating temperature.
Cans is recyclable, with good quality and yield, with right treatment. The methodology is hopefully useful for evaluating effects of various process parameters in recycling of aluminium scrap. |