Dynamic corrosion of Al2O3-ZrO2-SiO2 and Cr2O3-containing refractories by molten frits. Part I: Macroscopic analysis

The refractories currently used in frit furnaces are Al2O3-ZrO2-SiO2 (AZS) fused cast materials and Cr2O3-based materials. In this work, results on dynamic corrosion studies of AZS and Cr2O3-based materials by two ZnO-containing frits are described. Experiments have been performed using the “Merry Go Round” test at ≅1500 °C. Macroscopic results are analysed in terms of the remaining volume after the tests, as usually done in the glass industry. The significance and limits of such an approach are discussed.