|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Aluminum Reduction Technology
||Investigation of Alumina Concentration Gradients within Hall-Héroult Electrolytic Bath
||Jayson Tessier, Katie Cantin, Davíð Þór Magnússon
|On-Site Speaker (Planned)
Aluminium reduction cells consume about 1.9kg of alumina for each kilogram of aluminium they produce. Control of the alumina concentration within the electrolyte is of prime importance to achieve high metallurgical and energy efficiency and to reduce environmental footprint related to PFC and CO<SUB>2</SUB> emissions. However, modern high amperage reduction cells, oftentimes operated at much higher amperage than their nominal design, are facing challenging conditions to ensure a homogeneous alumina concentration over time and across the pot at a given time. This has negative impact on the cell efficiency. This paper presents findings from different sampling campaigns performed at different amperage and pot condition for a given cell technology. It is showed that large gradients of alumina concentration are present over time and spatially.
||Planned: Light Metals