Ontology type: schema:Chapter Open Access: True
2017
AUTHORSWojciech Gebarowski , Arne Petter Ratvik , Stein Rørvik , Lorentz Petter Lossius , Hogne Linga , Ann Mari Svensson
ABSTRACTThe anodic reaction of aluminium electrolysis cells leads to the formation of CO2 bubbles, which partly screen the anode surface and leads to an increase in the cell voltage. An advantage of these bubbles is that the formation and release contribute to the stirring of the electrolyte, however, the screening of the surface increases the irreversible energy losses. The voltage and current oscillation due to the bubble evolution during electrolysis for different anode materials have been determined in a laboratory cell. The effect of coke sulphur content and grain sizes were investigated. Anodes with finer coke fraction showed lower oscillations than coarser fraction equivalents. Additionally, the influence of current density on the amplitude of the anode potentials was measured. A 64% increase of current density caused an increase of anode potential oscillations from 79 to 170%. More... »
PAGES1203-1211
Light Metals 2017
ISBN
978-3-319-51540-3
978-3-319-51541-0
http://scigraph.springernature.com/pub.10.1007/978-3-319-51541-0_144
DOIhttp://dx.doi.org/10.1007/978-3-319-51541-0_144
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