Recycling of AMCs and Aluminium Foams

摘要

In a government supported project, recycling concepts for SiC-particle reinforced AMCs (aluminium-matrix-composites) and aluminium foams are examined at IME Institute of Process Metallurgy and Metal Recycling. The AMC material is treated by centrifuge and conventional salt. The aluminium foams are treated in a salt based process. The results presented show that the recycling of these AMCs as well as the examined Al-foams is feasible by the investigated recycling routes and lead to sufficient recycling yields for aluminium. Remaining problems that have to be solved are the concentration of SiC-particles in the aluminium melt after treatment and the titanium content in the recycled aluminium that originates from the foaming agent TiH_2. Concerning the results of the tests SiC-particle reinforced MMCs as well as TiH_2 foamed aluminium have to be recycled separately from other aluminium scrap.