Transactions of the INDIAN CERAMIC SOCIETY Vol. 59 2000
Role of Alumina Sol on the Physical Properties
of Low Cement Castables
Sunanda Mukhopadhyay and Swapan Kumar Das
Pages : 68-74
DOI : 10.1080/0371750X.2000.10799926
Abstract
This paper deals with the performance of alumina bearing sol,
prepared through sol-gel route, when used as a bonding agent
in low cement refractory castable composition. The physical
properties of the samples prepared by different processing technique
(tapping and vibration) are compared. The results indicate
that the simple tapping technique may be a cost-effective
solution in order to achieve desired high temperature properties.
Also the increase in solid content by heat treatment of a
particular sol upgrades its reactivity and improves the properties
of a castable at elevated temperatures. XRD and SEM studies
confirm the presence of corundum as a major phase and
mullite as a minor.
