Studies on India Refractory Clays :Part-IV, some clays from Madras State

Abstract

Four clays from Madras State have been studied. All the clays are Kaolinitic, predominant impurity being quartz. The clays also contain ferruginous impurities and develop varying degrees of buff colour on firing. While clays have high refractoriness and refractoriness under load, they have poor bonding strength in this fired state. In general, the clays are very promising as raw materials for manufacture of fire clay refractories; one of the clays has a high silica content and may prove for making semi-silica refractories also.