Journal ArticleDOI
Effect of preformed and in situ spinels on microstructure and properties of a low cement refractory castable
S. Mukhopadhyay,P. K. Das Poddar +1 more
TLDR
In this paper, two types of magnesium-aluminate spinels, one commercially available as preformed powder and the other prepared from cheaper precursors by the sol-gel route as a semidried reactive mass, were characterized in terms of particle size distribution, XRD phase evolution and chemical composition.About:
This article is published in Ceramics International.The article was published on 2004-01-01. It has received 75 citations till now. The article focuses on the topics: Flexural strength & Spinel.read more
Citations
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Journal ArticleDOI
Microsilica Role in the CA6 Formation in Cement-Bonded Spinel Refractory Castables
TL;DR: In this paper, the CaO·2Al2O3 (CA2) formation was analyzed in an assisted sintering test in an alumina-magnesia and a spinel-based castable matrix.
Journal ArticleDOI
Sintering, mechanical and refractory properties of MA spinel prepared via co-precipitation and sol–gel techniques
TL;DR: In this paper, the sintering, mechanical and refractory properties of magnesium aluminate spinel, magnesia-spinel and alumina-spinel were studied and improved by adding chromia, zirconia or their mixtures.
Journal ArticleDOI
Improved spinel-containing refractory castables for slagging gasifiers
TL;DR: In this paper, it has been shown that the addition of spinel and cement to spinel-rich alumina improves the corrosion resistance against molten coal slag remarkably, and the influence of spinels and cement in the alumina-spinel castables has been determined.
Journal ArticleDOI
Slag attack evaluation of in situ spinel-containing refractory castables via experimental tests and thermodynamic simulations
TL;DR: In this paper, the in situ spinel formation in alumina-magnesia refractory castables induces an expansive behavior, and many investigations highlight its positive role in the corrosion resistance of such materials.
Journal ArticleDOI
In‐Depth Microstructural Evolution Analyses of Cement‐Bonded Spinel Refractory Castables: Novel Insights Regarding Spinel and CA6 Formation
TL;DR: In this paper, a microstructural evolution analysis of high-alumina castables containing in situ or preformed spinel (MgAl2O4) was performed to check the actual CA6 development steps in the presence of an MgO-containing phase.
References
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Journal ArticleDOI
Evolution of in Situ Refractories in the 20th Century
William E. Lee,Robert E. Moore +1 more
TL;DR: A common theme over the past 100 years in refractories science and technology has been to generate a protective refractors layer in a high-temperature container, often by reaction of the refractory materials with the contents (glass, slag, or atmosphere) as discussed by the authors.
Journal ArticleDOI
Microstructural evolution in self-forming spinel/calcium aluminate-bonded castable refractories
M. Fuhrer,A. Hey,W.E. Lee +2 more
TL;DR: In this article, in-situ spinel formation occurs between 1200 and 1400 °C with a net-like morphology interlinked with CaO-MgO-Al2O3-SiO2 phases.
Journal ArticleDOI
Thermomechanical Behavior of High‐Alumina Refractory Castables with Synthetic Spinel Additions
Fabien Simonin,Christian Olagnon,Sandrine Maximilien,Gilbert Fantozzi,Luiz Antonio Diaz,Ramón Torrecillas +5 more
TL;DR: In this article, the thermomechanical behavior of a high-alumina refractory that contains 10 wt% of synthetic spinel has been studied, and results have been correlated with the microstructural and mineralogical evolutions using X-ray diffraction and scanning electron microscopy.
Journal ArticleDOI
Microstructural analysis of corroded alumina-spinel castable refractories
TL;DR: In this article, microstructural analysis indicates that the corrosion of spinel-alumina castables by a liquid steel ladle slag involves initial reaction of CaO in the slag with alumina fines in the refractory bond.
Journal ArticleDOI
Influence of the Characteristics of Spinels on the Slag Resistance of Al2O3–MgO and Al2O3–Spinel Castables
TL;DR: In this article, the XRD patterns at ambient temperature and at 1500°C showed that the spinel in the Al2O3-MgO castables fired at 1000°C for 3 h has the higher peak intensity, compared to those in Al 2O3 -spinel castables; the interplanar distance in the set (311) is 2.43 A.
Related Papers (5)
Microstructural evolution in self-forming spinel/calcium aluminate-bonded castable refractories
M. Fuhrer,A. Hey,W.E. Lee +2 more