Corrosion Behaviour of Refractory Materials in the Systems Cr2O3
and Cr2O3 – Al2O3 against Glass Melts in Subject to their Composition and the Thermal Conditions
P-D refractories Dyko Glass Labor, 40549 Düsseldorf, Germany
Volume 2, Issue 3, Pages 93 - 96
Traditionally continuous glass filament is made of E-glass and is used for glass-fibre reinforced plastic, whereas the insulation fibres are produced from basalt glass or C-glass. In Central and Western Europe basalt glass for health reasons was melted no longer. Instead of it so-called basalt-substitute glasses are produced. It concerns here short glasses with high ferric oxide content. In order to melt these fibre glasses, special refractories based on chromium oxide (mineral name: eskolaite) for the glass tank's lining are needed. So the aim of this paper is to give a review over refractories of the system Cr2O3–Al2O3 with chromium oxide content from 15 % up to 95 % for typical fibre glass melts. The first part of the paper is engaged in the characteristics of the refractory bricks due to their production procedure, and also the characteristics of the attacking glasses,which cause the corrosion, are succinctly discussed. The experimental part of the paper depicts the applied corrosion tests, the results of which are discussed and summarized in the last part of this paper.
corrosion, Cr2O3 refractories, Cr3O3-Al2O3 refractories
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