Influence of raw materials morphology on properties of magnesia-spinel refractories

The work concerns magnesia-spinel refractories (MSp) used in cement industry. These materials replace magnesia chromite refractories due to environment protection. The paper summarizes results of investigation on influence of raw materials on final properties of magnesia-spinel products. In experime...

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Bibliographic Details
Published in:Journal of the European Ceramic Society 2007, Vol.27 (2), p.1683-1689
Main Authors: Szczerba, Jacek, Pędzich, Zbigniew, Nikiel, Małgorzata, Kapuścińska, Dominika
Format: Article
Language:English
Subjects:
Applied sciences
Basic refractories
Building materials. Ceramics. Glasses
Chemical industry and chemicals
Exact sciences and technology
Refractory materials
Refractory products
Spinel
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Summary:The work concerns magnesia-spinel refractories (MSp) used in cement industry. These materials replace magnesia chromite refractories due to environment protection. The paper summarizes results of investigation on influence of raw materials on final properties of magnesia-spinel products. In experiments sintered or fused magnesia, and fused spinel were used. Clinkers differ in chemical composition and morphology. Grain composition of mixtures was calculated on the basis of modified Andreasen curve according to Dinger and Funk's model. Essential influence of clinker morphology on final properties of refractories was established. Porosity and pore size distribution in materials determine their strength and gas permeability. Relations between these parameters allow controlling the final properties of products in a wide range.
ISSN:0955-2219
1873-619X
DOI:10.1016/j.jeurceramsoc.2006.04.145