Presintered and coprecipitated spinels as additives in a low moisture castable - Part 2

ISSN 1121-7588
S. Mukhopadhyay, P.K. Daspoddar*
College of Ceramic Technology, Kolkata, India
* Dept. of Chemical Technology, Calcutta University, Kolkata, India


Synthetic commercial MgAl2O4 spinel and chemically prepared coprecipitated spinels were characterized by XRD, IR, particle size distribution, chemical analysis and utilized as additives in a refractory castable composition. The qualities of those two types of spinel bonded castables were examined in terms of bulk density, apparent porosity, cold crushing strength, spalling resistance and flexural strength. XRD, SEM and slag corrosion tests were also carried out to evaluate the performance of these spinel additives at aggressive atmosphere.
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