A. Coke ovens regenerator
B. Outer lining of L.D. converter
C. Hearth bottom of blast furnace
D. Coke oven walls
Fireclay bricks are used in the______________? Read More »
Stoichiometry 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.
High porosity refractory bricks have________________? Read More »
Stoichiometry A. Beehive coke oven
B. By-product coke oven walls
C. Combustion chamber of B.F. stoves
D. Coke oven regenerators
Fireclay bricks are not used in the________________? Read More »
Stoichiometry A. Silica
B. Carborundum
C. Fireclay
D. Magnesite
Hot metal runner in blast furnace are lined with ______________ bricks? Read More »
Stoichiometry A. Increases
B. Lowers
C. Does not affect
D. Either A. or B.; depends on its quantity
Presence of MgO in alumino-silicate refractories ______________ its refractoriness ? Read More »
Stoichiometry A. 3Al2O3.2SiO2
B. Al2O3
C. ZrSO4
D. ThO2
Chemically, mullite refractories is________________? Read More »
Stoichiometry A. Fusion point
B. Spalling resistance
C. Slag penetration resistance
D. Refractoriness under load (RUL)
Panel test determines the ______________ of refractories? Read More »
Stoichiometry 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.
Refractory bricks with lower permeability is produced by using _________________? Read More »
Stoichiometry