Preparation and characterisation of self-flowing refractory material containing 971U type microsilica

Authors: C. Göğtaş, N. Ünlü, A. Odabaşı, L. Sezer, F. Ç ınar, Ş. Güner, G. Göller, N. Eruslu

Source: Advances in Applied Ceramics

Publisher: Maney Publishing

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.

Document Type:

DOI: 10.1179/174367609X422199

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