Abstract
A newer composition of self-flowing low cement brown fused alumina castable containing 971U type microsilica was developed. Optimum flow characteristics were achieved using water addition of 4.6 wt-%. This batch was sintered at different firing temperatures up to 1500°C. To understand the effect of both firing temperatures and corresponding phases, the present castable was characterised in terms of X-ray diffraction, scanning electron microscopy, bulk density (BD), apparent porosity (AP), water absorption (WA), cold crushing strength (CCS) and self-leveling flowability. The results revealed that gradual increase in firing temperature from 1100 through 1500°C caused low AP and WA, and high CCS properties due to the densification of the castable.
Original language | English |
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Pages (from-to) | 6-11 |
Number of pages | 6 |
Journal | Advances in Applied Ceramics |
Volume | 109 |
Issue number | 1 |
DOIs | |
Publication status | Published - 1 Feb 2010 |
Keywords
- Alumina castable
- Characterisation
- Firing temperature
- Microsilica
- Refractory material
- Self-flowing