Abstract
Non-metallic inclusions such as oxides, borides and carbides in aluminium melts are a major cause of product failure during both processing and use. To remove these inclusions, molten aluminium is usually filtered through a mechanical filter such as deep bed-filter, ceramic foam filter or Bonded Particle Filter (BPF). In this study three BPF from Pyrotek have been tested at Hydro’s reference centre in Sunndalsøra. The filters had different grit sizes; 6, 10, and 14 (equivalent to 30, 50, and 70 ppi). The filters were mounted in the patent pending Drain Free filter box developed by Hycast. LiMCA was used at the up-stream side of the two coarsest filter (Grit 6 and 10) and both up-stream and down-stream for the finest filter (Grit 14). Three samples from each of the filters have been studied in a light microscope, and inclusions have been counted using image analysis. In addition, PoDFA samples from the test with the finest filter were also analysed and discussed.
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© 2019 The Minerals, Metals & Materials Society
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Kvithyld, A. et al. (2019). Aluminium Filtration by Bonded Particle Filters. In: Chesonis, C. (eds) Light Metals 2019. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-030-05864-7_132
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DOI: https://doi.org/10.1007/978-3-030-05864-7_132
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