Change search
ReferencesLink to record
Permanent link

Direct link
Lab scale study of the depletion of mullite/corundum-based refractories trough reaction with scaffold materials
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science.
LKAB.
2011 (English)In: IOP Conference Series: Materials Science and Engineering: Symposium 16, 2011 (222001-222031) Innovation in Refractories and Traditional Ceramics, IOP Publishing Ltd , 2011, Vol. 18, 222004Conference paper (Refereed)
Abstract [en]

To investigate the mechanisms underlying the depletion of mullite/corundum-based refractory bricks used in rotary kilns for iron ore pellet production, the reaction mechanisms between scaffold material and refractory bricks have been studied on the laboratory-scale. Alkali additions were used to enhance the reaction rates between the materials. The morphological changes and active chemical reactions at the refractory/scaffold material interface in the samples were characterized using scanning electron microscopy (SEM), thermal analysis (TA) and X-ray diffraction (XRD). No reaction products of alkali and hematite (Fe2O3) were detected; however, alkali dissolves the mullite in the bricks. Phases such as nepheline (Na2OAl2O32SiO2), kalsilite (K2OAl2O32SiO2), leucite (K2OAl2O34SiO2) and potassium β-alumina (K2O11Al2O3) were formed as a consequence of reactions between alkali and the bricks.

Place, publisher, year, edition, pages
IOP Publishing Ltd , 2011. Vol. 18, 222004
Series
, I O P Conference Series: Materials Science and Engineering, ISSN 1757-8981 ; 16
Research subject
Engineering Materials
Identifiers
URN: urn:nbn:se:ltu:diva-38848DOI: 10.1088/1757-899X/18/22/222004Local ID: d5d40b0f-19ae-4e56-ae4e-1cfe61c97660OAI: oai:DiVA.org:ltu-38848DiVA: diva2:1012350
Conference
International Congress on Ceramics : 14/11/2010 - 18/11/2010
Note
Validerad; 2011; 20110920 (ysko)Available from: 2016-10-03 Created: 2016-10-03Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full text

Search in DiVA

By author/editor
Stjernberg, JesperAntti, Marta-LenaIon, John
By organisation
Material Science

Search outside of DiVA

GoogleGoogle Scholar

Altmetric score

Total: 2 hits
ReferencesLink to record
Permanent link

Direct link