A. High duty fireclay
B. Silica
C. Mullite
D. Carborundum
Related Mcqs:
- Magnesite bricks are used in those parts of furnaces, which are __________________?
A. Subjected to temperature fluctuation
B. Required to resist corrosive basic slag
C. Subjected to high load
D. None of these - Semi-silica bricks compared to silica bricks have_______________?
A. Less fusion point
B. Better spalling resistance
C. Both A. and B.
D. Neither A. not B. - Outer combustion chamber of blast furnace stove is lined with _____________ bricks?
A. Fireclay
B. Silica
C. Chrome magnesite
D. Zirconia - Which property is important for bricks used in the combustion chamber & dome of blast furnace stoves ?
A. High refractoriness
B. High resistance to spalling
C. High strength and density
D. All A., B. and C. - Thermal spalling mainly occurs during _____________ of furnaces?
A. Cooling down
B. Warming up
C. Both A. & B.
D. Neither A. nor B. - Magnesite refractories are used for the construction of those furnaces, which are________________?
A. Not required to resist the corrosive action of basic slag
B. Not subjected to fluctuation in temperature
C. Used for raising & maintaining high temperature
D. Both B. and C. - ______________ bricks are used in the burning zone of a cement rotary kiln ?
A. High alumina
B. Fireclay
C. Thoria
D. Silicon carbide - Cold crushing strength of fireclay bricks is about ______________ kgf/cm2?
A. 50-100
B. 100-150
C. 200-400
D. 500-1000 - . Refractoriness under load (RUL) of fireclay bricks (under a load of 2 kg/cm2) is ______________ °C?
A. 500
B. 1000
C. >1350
D. >2000 - ______________ bricks should not be used in oxidising atmosphere?
A. Tar dolomite
B. Carbon
C. Silica
D. Fireclay
