Recycling Al is an up-to-date topic nowadays due to the economic benefits and sustainability, in fact recycling Al employs only 5% of the energy necessary for its extraction from bauxite ore, saving 9 ton of CO2 per 1 tonne of Al recycled. In this research project the principles of fractional solidification have been applied to reduce the amount of impurities in model recycled Al alloys. A set-up based on isothermal squeezing of a semi-solid alloy has been developed and tested. The ultrasonic vibration applied to the semi-solid material has proven to enhance the purification achievable, up to 65% of reduction in the concentration. A number of potential impurities, such as Si, Ni, Cu, have been tested. The role of solute partitioning during the process has been evaluated and characterised by optical microscopy and modelling.
CITATION STYLE
Venditti, S., Eskin, D., & Jacot, A. (2020). Fractional Solidification for Purification of Recycled Aluminium Alloys. In Minerals, Metals and Materials Series (pp. 1110–1118). Springer Science and Business Media Deutschland GmbH. https://doi.org/10.1007/978-3-030-36408-3_150
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