Non-oxide materials are used for nonbasic refractory products due to various reasons. This master thesis deals with basic research about the potential of the addition of non-oxidic components in basic refractory materials. Besides a literature research about wetting properties of non-oxides, the effects of the addition of non-oxide components on the physical and chemical parameters of ceramically bonded basic refractories were investigated. The components were added as fines and grains. If added as fines, burning took place in oxidizing conditions at 1400°C and 1500°C and in reducing conditions at a firing temperature of 1500°C. The specimens with grains were burnt in oxidizing conditions at 1400°C, 1500°C and 1600°C. Physical parameters such as bulk density, cold crushing strength and Youngs modulus have been determined as well as chemical parameters like residual carbon content. The phase composition was investigated by microscopic and diffraction analyses. The results demonstrate that specimens with non-oxides added as fines form a ceramic bond in reducing burning conditions at 1500°C. Similar results are observed for specimens containing these components as grains and burnt in oxidizing conditions at 1500°C. Besides that, the oxidized content is at low level. Furthermore the specimens show a decrease of the Youngs modulus.
|Translated title of the contribution
|Potential of the addition of non-oxide components in ceramically bonded basic refractory materials
|29 Jun 2007
|Published - 2007
Bibliographical noteembargoed until null
- basic refractories