Abstract
Alstom’s new pot feeding system (Alfeed) was successfully installed and commissioned on Emal’s 756 pots during 2009–2010.
The Alfeed system consists of 15 km distribution and pot airslides, manufactured in standard sections for maximum ease of installation and use.
Alfeed on Emal is connected to 8 enriched alumina silos, each feeding two sections with 48 pots. Each section is 300 m long. The nominal flow rate to each pot is >200 kg/h, and to each section >10 ton/h.
The main issue encountered during start-up was dusting from the pot’s alumina hopper lids. Small puffs of dusty air would leak through a narrow opening, eventually leading to build-ups of alumina on the superstructure. This was resolved through implementation of a clamp to the lid as well as a gasket.
As with all new systems, some challenges were encountered as well as possibilities for optimisation. These are discussed in detail in the paper.
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© 2012 TMS (The Minerals, Metals & Materials Society)
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Ose, S., Leikvang, B., Mathew, S.J., Wedde, G., Sørhuus, A., Bjarnø, O. (2012). Experiences with Alstom’s new Alfeed system at Emal. In: Suarez, C.E. (eds) Light Metals 2012. Springer, Cham. https://doi.org/10.1007/978-3-319-48179-1_111
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DOI: https://doi.org/10.1007/978-3-319-48179-1_111
Publisher Name: Springer, Cham
Print ISBN: 978-3-319-48570-6
Online ISBN: 978-3-319-48179-1
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