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Erschienen in:
2016 | OriginalPaper | Buchkapitel
Inline melt treatment for low to medium metal flow rates
verfasst von : Arild Håkonsen, Terje Haugen, John Olav Fagerlie
Erschienen in: Light Metals 2016
Verlag: Springer International Publishing
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The Aluminum casthouse industry is striving to reduce operating cost, emissions and energy consumption. During the last decades technologies have been launched to able drain-free de-gassers with no use of Chlorine or Chlorine containing salt.Ten years ago, Hycast launched the I-60 SIR unit with a unique siphoning concept, and bottom mounted rotors, allowing for long residual time of the Argon gas. This unit works very well for all flow rates with only two rotors. However, for low flow rates, the unit over-performs and the purpose of this work was to develop a one-rotor siphon inert reactor for low and medium flow rates up to 25 tons per hour. In this work, the basic design and the metallurgical performance of the new SIR I-25 are presented. The removal efficiency of both Hydrogen and inclusions are well within the requirements in the industry.