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Revista de Chimie (Rev. Chim.), Year 2003, Volume 54, Issue 4,





The Study of the Alumina Content Influence on the Iron Impurities Distribution in Cryolite-Alumina Mixtures
Cristina Nicolescu, Rodica Galasiu, Ioan Galasiu, Gheorghe Vlaicu, Geir Martin Haarberg, Jomar Thonstad


Abstract:

The influence of alumina Al2O3 on the distribution of iron impurities in cryolite-alumina melts was studied. Mixtures containing Na3AlF6 + Al2O3 + AlF3 + CaF2 in different proportions were prepared. The mixtures have been melted in a carbon crucible together with carbon dust, metallic aluminium and impurity (added as Fe2O3). Iron content in fractions separated from each sample after solidification has been determined. Conclusions of alumina content influence on iron distribution in cells from aluminium electrolysis have been drawn. Keywords: iron impurities, aluminium electrolysis, alumina


Issue: 2003, Volume 54, Issue 4
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