Evaluation of quartzites for the manufacture of silica bricks

Chemical, physical and inversion characteristics of quartzites from different sources have been studied to evaluate their suitability for the conventional as well as superduty type of silica refractories. Results of small scale trials carried out on quartzite samples with addition of lime and iron oxide and physical properties of the specimens after firing to 1450°C have also been furnished and in the light thereof, the suitability of indigenous quartzites have been assessed. (Mr. Gurbux Singh Minhas, Senior Scientific Assistant and Mr. H.V. Bhaskar Rao, Senior Scientific Officer, National Metallurgical Laboratory, Jamshedpur.)