Metal Processing Institute
An increase of 250% in aluminum usage in automotive manufacturing is expected by 2020. Consequently, the generation of sheet scrap will also increase. Producing secondary aluminum only emits 5% of the CO2 compared to primary aluminum. With the advent of opto-electronic sorting technologies, recovery of aluminum scrap generated during manufacturing is at hand. A series of interviews with industrial experts and visits to stamping plants were performed to identify: (i) the most common scrap-generating alloys; (ii) how scrap is collected today; and (iii) the types of contamination hindering sortation and recycling. Recommendations are made herein that will support the development of an optimized scrap management system including sorting criteria that will enable closed loop recycling.
Worcester Polytechnic Institute
Major Qualifying Project
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