|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Aluminum Reduction Technology
||Alternative Roof-vent Emission Monitoring Method
||Gunn Iren Müller, Are Dyrøy, Rachel Dosnon, Michel Meyer, Jean-Michel Jolas
|On-Site Speaker (Planned)
||Gunn Iren Müller
For many aluminium smelters reducing contaminant emission levels is a condition for potential production increase. Making accurate measurements of emissions and gas flows at these low levels is challenging. Major contaminants for our industry are: fluoride (gaseous and particulate), dust, sulphur dioxide and perfluorocarbon. Current dry scrubbing technologies are adequate. Nowadays most of these pollutants are emitted via the roof-vents.
This paper describes initial results from collaboration between Hydro Aluminium and Rio Tinto Aluminium to design, or find and validate, an affordable, precise, reliable, cross-checked measurement system and layout allowing continuous assessment of gaseous and particulate fluorides emissions at potroom roof-vent.
Three series of experiments were completed to validate a passive sampler compared to current monitoring (manual and continuous). This passive sampling technique circumvents debate about flow measurement at roof-vent and is useful to establish patterns of recirculation within and around the electrolysis building and to confirm flow modelling.
||Planned: Light Metals