A. Coke ovens regenerator
B. Outer lining of L.D. converter
C. Hearth bottom of blast furnace
D. Coke oven walls
A. Poor resistance to the penetration of molten slag, metal & flue gases
B. Poor heat conductivity & low strength
C. Better thermal spalling resistance
D. All A., B. and C.
A. Beehive coke oven
B. By-product coke oven walls
C. Combustion chamber of B.F. stoves
D. Coke oven regenerators
A. Silica
B. Carborundum
C. Fireclay
D. Magnesite
A. Increases
B. Lowers
C. Does not affect
D. Either A. or B.; depends on its quantity
A. 3Al2O3.2SiO2
B. Al2O3
C. ZrSO4
D. ThO2
A. Fusion point
B. Spalling resistance
C. Slag penetration resistance
D. Refractoriness under load (RUL)
A. 30
B. 50
C. 70
D. 90
A. 5
B. 20
C. 40
D. 55
A. Higher firing temperature
B. Higher moulding pressure
C. Finer grog size
D. All A., B. and C.