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Erschienen in:
2016 | OriginalPaper | Buchkapitel
Votorantim Metais — CBA Alumina Refinery Precipitation Modeling
verfasst von : Thiago Teixeira Franco, Roberto Seno Junior
Erschienen in: Light Metals 2014
Verlag: Springer International Publishing
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Precipitation is one the final Bayer Process stages in an alumina refinery and its objective is to crystallize the tri-hydrated alumina. Precipitation is influenced by liquor temperature and composition, residence time in the precipitators, seed charge and others.Many plant indicators are directly affected by the performance of this stage, for example, productivity and production.In order to predict the behavior of the precipitation process, a mathematical model was developed using process simulation software. This solution became an important tool in decision making and process control, in addition to operational improvement and technological developments.The current work presents the modeling development, results, challenges and the possibility to replicate the methodology in other refinery areas.