Effect of Metal Pad Instabilities on Current Efficiency in Aluminium Electrolysis

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dc.contributor.author Agnihotri, A.
dc.contributor.author Mukhopadhyay, Jyoti
dc.contributor.author Pathak, S. U.
dc.date.accessioned 2014-03-17T12:34:41Z
dc.date.available 2014-03-17T12:34:41Z
dc.date.issued 2014-06
dc.identifier.citation Mukhopadhyay, Jyoti; Agnihotri, A. and Pathak, S. U.,"Effect of Metal Pad Instabilities on Current Efficiency in Aluminium Electrolysis”, Transactions of the Indian Institute of Metals, DOI: 10.1007/s12666-013-0349-4, vol. 67, no. 3, pp 315-323, Jun. 2014. en_US
dc.identifier.issn 0972-2815
dc.identifier.issn 0975-1645
dc.identifier.uri https://repository.iitgn.ac.in/handle/123456789/873
dc.identifier.uri http://dx.doi.org/10.1007/s12666-013-0349-4
dc.description.abstract Uncompensated residual magnetic field in aluminium electrolysis cells leads to metal instability which is reflected as voltage instability referred to as voltage noise. The latter affects current efficiency and power consumption and has, therefore, a significant effect on the economy of the electrolysis operation. The characteristics of metal instability are studied in detail in this investigation by carrying out measurements related to voltage, magnetic flux, thermal energy loss and thickness of the frozen electrolyte (ledge). Current sinking method is employed to calculate counter electromotive force from which values for current efficiency are derived. These values are compared with those obtained from the copper dilution experiments. The studies indicate that unstable cell operation resulting from significant metal instability effect, due to unbalanced magnetic fields, leads to deterioration in ledge thickness, more heat loss and reduced current efficiency. en_US
dc.description.statementofresponsibility by A. Agnihotri, S. U. Pathak and Jyoti Mukhopadhyay
dc.format.extent Vol. 67, No. 3, pp 315-323
dc.language.iso en en_US
dc.publisher Springer en_US
dc.subject Aluminium en_US
dc.subject Current efficiency en_US
dc.subject Heat flux en_US
dc.subject Magnetic field en_US
dc.subject Voltage en_US
dc.title Effect of Metal Pad Instabilities on Current Efficiency in Aluminium Electrolysis en_US
dc.type Article en_US
dc.relation.journal Transactions of the Indian Institute of Metals


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