Characteristic properties and recyclability of the aluminium fraction of MSWI bottom ash

The increasing use of aluminimum in packaging applications results many different aluminium-based products ending up consumer mixed-waste bins. This waste is typically incinerated, generating an aluminium-containing bottom ash. current work investigates the recyclability aluminium fraction ash from incineration plants USA, UK and Denmark. Incinerated Al-samples size fractions (2–6 mm, 6–12 mm 12–30 mm) were characterized terms inherent oxide thickness, re-melting yield/coagulation composition. measured average thickness on Al particles was 68 µm (SD=100), with metal yield coagulation efficiency to between 76 92% 87–99% respectively. Larger particle resulted a higher due their mass surface ratio. A simplified model correlating proposed. content melted material determined 95.6 98.5% main impurities being Fe, Si, Mn, Zn, Mg Cu, corresponding major alloying elements charge components.