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Fractional Solidification for Purification of Recycled Aluminium Alloys

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Light Metals 2020

Part of the book series: The Minerals, Metals & Materials Series ((MMMS))

Abstract

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.

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Acknowledgements

This work is part of an Industrial Case Ph.D. project jointly funded by Engineering and Physical Sciences Research Council of UK (voucher no 16000068) and Jaguar Land Rover.

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Authors and Affiliations

  1. BCAST, Brunel University London, Kingston Lane, Uxbridge, UB8 3PH, UK

    Susanna Venditti, Dmitry Eskin & Alain Jacot

Authors
  1. Susanna Venditti
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  2. Dmitry Eskin
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  3. Alain Jacot
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Corresponding author

Correspondence to Susanna Venditti .

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Editors and Affiliations

  1. Rio Tinto, Brisbane, QLD, Australia

    Alan Tomsett

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© 2020 The Minerals, Metals & Materials Society

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Venditti, S., Eskin, D., Jacot, A. (2020). Fractional Solidification for Purification of Recycled Aluminium Alloys. In: Tomsett, A. (eds) Light Metals 2020. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-030-36408-3_150

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