Poster (EARTH)

[PE1-013] Recovery of metallic Al from black dross generated from the used Beverage Cans Recycling Process with Particle Comminution

○Yong Hwan Kim¹, Chulwoong Han¹, Seong Ho Son¹, Dae-Geun Kim², Man Seung Lee³ (1. Korea Institute of Industrial Technology, 2. Institute for Advanced Engineering, 3. Mokpo National University)

Keywords:Metallic aluminium, Black dross, Used beverage can, Recovery, Particle comminution

This study investigated the recovery of metallic aluminium in the black dross generated from used beverage can recycling process with crushing mechanism such as compression and impact. The as-received Al black dross had a spherical shape, and its size was about 10-40 mm. Also, The XRD pattern showed that the main contents of black dross are composed of halite(NaCl), sylvite(KCl), spinel(MgAl₂O₄) and corundum(Al₂O₃). A metallic aluminium recovery test was performed using jaw crusher and hammer mill having different crushing mechanism. It was analysed that Jaw crushing process can separate into metallic aluminium and non metallic constituents. However, hammer milling process shows significant difference on the separation results. It was found that jaw crushing process was effective for recovery of metallic aluminium in the black dross than that of hammer milling process.