A. Fireclay
B. Carbon
C. 85% alumina
D. Corundum
Related Mcqs:
- Rotary kilns meant for calcination of limestone are lined with chrome magnesite in ______________ zone?
A. Preheating
B. Cooling
C. Burning
D. All the above - Lower part of hot metal mixer are lined with _____________ bricks?
A. Superduty fireclay
B. High alumina
C. Silica
D. Carborundum - Roof of a basic open hearth furnace is lined with ______________ bricks?
A. Silica
B. Fireclay
C. Dolomite
D. Magnesite - Outer combustion chamber of blast furnace stove is lined with _____________ bricks?
A. Fireclay
B. Silica
C. Chrome magnesite
D. Zirconia - Upper portion of hot metal mixer are lined with mullite bricks, which helps in resisting the_________________?
A. Washing action of metal
B. Corrosion by layer of slag
C. Both A. & B.
D. Neither A. nor B. - Slide gates in teeming laddie used for steel pouring in ingot moulds is lined with _____________ bricks?
A. Bakelite impregnated or fused periclase
B. Silica
C. Semi-silica
D. Fireclay - Hot blast main (carrying air at 1000°C) in blast furnace are lined with ______________ bricks?
A. Silica
B. Fireclay
C. Magnesite
D. Zirconia - ______________ bricks are used in the burning zone of a cement rotary kiln ?
A. High alumina
B. Fireclay
C. Thoria
D. Silicon carbide - 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. - Because of its very high refractoriness of the order of __________ °C, silicon carbide refractories are used in zinc smelting furnace, muffle furnace and for supporting the wares in tunnel kilns ?
A. 1800
B. 2200
C. 2400
D. 2700
