A. Beehive coke ovens
B. By-product coke ovens
C. Dome of blast furnace stoves
D. Roof of open hearth furnace
Related Mcqs:
- 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 - Spalling of silica bricks occurs due to abrupt volume changes, when it is cooled below a temperature of ______________ °C?
A. 770
B. 570
C. 270
D. 70 - Fireclay bricks are not used in the_________________?
A. Blast furnace
B. Hot blast stove
C. Cupola
D. Wall of coke oven - Which form of silica has the highest specific gravity ?
A. Quartz
B. Cristobalite
C. Tridymite
D. All have the same specific gravity - Addition of zircon to silica refractory brick improves its_________________?
A. Crushing strength
B. Resistance to slag attack
C. Both A. and B.
D. Neither A. nor B. - Permeability of bricks is a measure of the___________________?
A. Refractoriness
B. Melting point
C. Rate at which a fluid will pass through the pores
D. Expansion during heating - 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. - 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 - 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 - Roof of a basic electric furnace is made of ______________ bricks?
A. Superduty fireclay
B. Silica
C. Chromite
D. None of these
