Estimation of spatial alumina concentration in an aluminum reduction cell using a multilevel state observer
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DOI: 10.1002/aic.15656
Abstract: In the Hall-Heroult process, spatial variations in alumina concentration are very difficult to measure and impossible to estimate from the conventionally monitored line amperage and cell voltage. This paper presents an approach to estimate in… read more here.
Keywords: alumina concentration; aluminum reduction; cell; reduction cell ... See more keywords
Recent Advances in Electrical Resistance Preheating of Aluminum Reduction Cells
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DOI: 10.1007/s11837-016-1987-x
Abstract: ABSTRACTThere are two mainpreheating methods that are used nowadays for aluminum reduction cells. One is based on electrical resistance preheating with a thin bed of small coke and/or graphite particles between the anodes and the… read more here.
Keywords: resistance preheating; reduction cells; resistance; electrical resistance ... See more keywords
The onset of instabilities and finite amplitude waves in a model of aluminum reduction cells with nonuniform cathode current
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DOI: 10.1063/5.0039232
Abstract: In aluminum reduction cells, the electric current density at the cathode is seldom uniform. This may be due to a variety of reasons. One of the reasons is that a mass of undissolved alumina may… read more here.
Keywords: liquid metal; onset instabilities; cathode; reduction cells ... See more keywords
Energy and Exergy Analyses of Different Aluminum Reduction Technologies
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DOI: 10.3390/su10041216
Abstract: This paper examines and compares different aluminum reduction technologies found in the literature as alternatives to the current Hall–Heroult technology. The main inefficiencies in the current Hall–Heroult technology were identified and the advantages of the… read more here.
Keywords: hall heroult; energy; reduction technologies; different aluminum ... See more keywords