A. Crack when subjected to sudden change of temperature B. Cannot be used in the dome of hot blast stoves C. Have lower thermal conductivity than fireclay bricks D. All a., b. and c.
A. Dehydrate the dried refractory B. Develop stable mineral forms in them C. Form ceramic bonds necessary for development of high crushing strength in the finished ProDuct
A. Are bonded with lime and clay B. (free from silica) have better thermal fatigue resistance than silica and magnesite refractories. C. Are resistant to basic slag D. All a., b. and c.
