Related Questions

Faster rate of drying of moulded refractories results in high __________ of refractories.
A Green strength
B Voids
C Shrinkage
D Both B and C
Zirconia probe is used for the continuous measurment of __________ flue gases going out of the furnace.
A Oxygen in
B Carbon dioxide in
C Carbon monoxide in
D Temperature of
Zirconia probe is used for the measurement of
A Humidity of air
B % CO2 in flue gas
C % O2 in flue gas
D Speed of a submarine
Magnesite refractories are generally not used in the
A Electric furnace walls
B Steel melting furnace
C Open hearth furnace
D Burning zone of cement kilns
Silica refractories are not used in
A Coke oven walls
B Beehive coke ovens
C Dome and upper portion of B.F. stoves
D Open hearth furnace roof
Silicon carbide refractories are used in the
A Muffle furnace
B Zinc smelting furnace
C Ceramic recuperators
D All of the above
Carbon refractories are exclusively used in the
A Hearth of blast furnace
B Walls of coke oven
C Regenerators of coke oven
D Side wall of soaking pits
High alumina refractories are used in the
A Dome of blast furnace stoves
B Electric arc furnace roof
C Glass melting furnaces
D All of the above
Refractories used in/for __________ should have low thermal conductivity.
A Coke ovens
B Insulation
C Regenerators
D Muffle furnaces
Si percentage in silica refractories used in the walls of coke oven is about
A 45
B 60
C 80
D 95

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