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Study of the degradation process of refractory bricks in rotary kilns
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science.ORCID iD: 0000-0003-3661-9262
LKAB Research and Development, Metlab.
Linköping University, Division of Nanostructured Materials.ORCID iD: 0000-0002-2286-5588
2008 (English)In: Global roadmap for ceramics & ICC2 proceedings: 2nd International Congress on Ceramics ; June 29 - July 4, 2008, Verona, Italy / [ed] Alida Bellosi, Faenza: Institute of Science and Technology for Ceramics , 2008Conference paper, Published paper (Refereed)
Abstract [en]

Iron ore pellets are commonly sintered in a kiln insulated with bricks, which wear and need to be replaced regularly. It is desirable to increase the lifetime of those bricks. Slag/brick compatibility tests have been performed in a laboratory furnace. Slag collected from a production kiln, three commercial bricks and additions of alkali were used. Alkali dissolves the mullite in the bricks, and form the phases nepheline and kalsilite. Characterization of the microstructure showed that the degradation of the bricks was enhanced by increased temperature and amount of alkali. The slag penetration depth is more affected by increased temperature than increased dwell time.

Place, publisher, year, edition, pages
Faenza: Institute of Science and Technology for Ceramics , 2008.
National Category
Other Materials Engineering
Research subject
Engineering Materials
Identifiers
URN: urn:nbn:se:ltu:diva-31762Local ID: 607d0280-bae7-11dd-b223-000ea68e967bISBN: 978-88-8080-084-2 (print)OAI: oai:DiVA.org:ltu-31762DiVA, id: diva2:1004996
Conference
International Congress on Ceramics : 29/06/2008 - 04/07/2008
Note
Godkänd; 2008; Bibliografisk uppgift: CD-ROM; 20081125 (jessje)Available from: 2016-09-30 Created: 2016-09-30 Last updated: 2017-11-25Bibliographically approved

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