A. Refractoriness
B. Melting point
C. Rate at which a fluid will pass through the pores
D. Expansion during heating
Related Mcqs:
- Refractory bricks with lower permeability is produced by using _________________?
A. Higher firing temperature
B. Higher moulding pressure
C. Finer grog size
D. All A., B. and C. - Refractory bricks having lower porosity have _____________________?
A. High insulating properties
B. Low heat capacity
C. Low thermal conductivity
D. Greater strength - Silica bricks are never used for lining the_________________?
A. Beehive coke ovens
B. By-product coke ovens
C. Dome of blast furnace stoves
D. Roof of open hearth furnace - Fireclay bricks is not used for lining the_______________?
A. Cupola
B. Gas producer
C. Bottom of hot metal mixer
D. Roof of open hearth furnace - Fireclay bricks are not used in the_________________?
A. Blast furnace
B. Hot blast stove
C. Cupola
D. Wall of coke oven - Fireclay bricks are not used in the________________?
A. Beehive coke oven
B. By-product coke oven walls
C. Combustion chamber of B.F. stoves
D. Coke oven regenerators - High porosity refractory bricks have________________?
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. - Fireclay bricks are used in the______________?
A. Coke ovens regenerator
B. Outer lining of L.D. converter
C. Hearth bottom of blast furnace
D. Coke oven walls - Outer combustion chamber of blast furnace stove is lined with _______________ bricks?
A. Fireclay
B. Silica
C. Chrome magnesite
D. Zirconia - An insulating refractory brick should have high porosity and low thermal conductivity. Which of the following is not used for inducing porosity in the insulating refractory bricks during its manufacture ?
A. Cork
B. Saw dust
C. Sand
D. Chemically prepared foam
