Determination of metal inventory and current efficiency in commercial aluminum reduction cells |
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Authors: | Kai Grjotheim Conrad Krohn Roger Naeumann Knut Tørklep |
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Affiliation: | (1) Institute of Inorganic Chemistry, Technical University of Norway, Trondheim, Norway;(2) Institut für anorganische Chemie und Kernochemie, Kernreaktor, Johann Gutenberg Universitat, Mainz, Germany |
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Abstract: | A method for the determination of the metal inventory in commercial aluminum reduction cells, based on radioisotope dilution, has been developed, employing a198Au tracer. By taking a large number of samples from the cells, the current efficiency is evaluated from the slope of the cumulative metal inventory vs time data. The method allows a determination of the current efficiency over a period of 2 to 3 days with a relative precision of approximately 1 pct. The paper gives a thorough discussion of the sources of error inherent in the procedure suggested. Formerly Research Associate at the same University. |
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