Operational and control improvements in reduction lines at Aluminium Delfzijl

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dc.contributor.author Stam, MA en
dc.contributor.author Taylor, Mark en
dc.contributor.author Chen, John en
dc.contributor.author Van Dellen, S en
dc.contributor.editor Bearne, G en
dc.contributor.editor Dupuis, M en
dc.contributor.editor Tarcy, G en
dc.date.accessioned 2017-12-05T01:37:50Z en
dc.date.issued 2013-04-08 en
dc.identifier.citation In Essential readings in light metals: Aluminium reduction technology, volume 2. Editors: Bearne G, Dupuis M, Tarcy G. 2: 669-673. John Wiley & Sons, Inc., Hoboken, NJ 08 Apr 2013 en
dc.identifier.isbn 9781118635742 en
dc.identifier.uri http://hdl.handle.net/2292/36679 en
dc.description.abstract Nowadays viability of smelters requires operation of cells at or beyond known performance limits. At Aldel over the last ten years the intensity of electrical energy dissipation and alumina dissolution per cubic centimeter of liquid bath have increased by 50% as production (+40%) and specific energy consumption (-6%) have improved. The cell imbalances resulting from this increased intensity must be sensed quickly and their causes corrected or removed to maintain the cells in their most efficient operating zone. This defines a new control objective for smelting relating to diagnosis of causes of abnormality in strongly interactive multivariate processes. Timely identification of these causes of variation is linked to operational practice improvement and better control decisions in reduction lines. This paper describes smelter based improvement of operational practices and control decisions using the above objective. Statistical multivariate control surfaces are presented for operating cells and identified abnormal behaviours are discussed. © 2013 The Minerals, Metals & Materials Society. en
dc.publisher John Wiley & Sons, Inc. en
dc.relation.ispartof Essential readings in light metals: Aluminium reduction technology, volume 2 en
dc.rights Items in ResearchSpace are protected by copyright, with all rights reserved, unless otherwise indicated. Previously published items are made available in accordance with the copyright policy of the publisher. en
dc.rights.uri https://researchspace.auckland.ac.nz/docs/uoa-docs/rights.htm en
dc.title Operational and control improvements in reduction lines at Aluminium Delfzijl en
dc.type Book Item en
dc.identifier.doi 10.1002/9781118647851.ch98 en
pubs.begin-page 669 en
pubs.volume 2 en
dc.rights.holder Copyright: John Wiley & Sons, Inc. en
pubs.end-page 673 en
pubs.place-of-publication Hoboken, NJ en
pubs.publication-status Published en
dc.rights.accessrights http://purl.org/eprint/accessRights/RestrictedAccess en
pubs.elements-id 411274 en
pubs.org-id Engineering en
pubs.org-id Chemical and Materials Eng en
pubs.record-created-at-source-date 2017-12-05 en


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