A. Coke oven walls
B. Beehive coke ovens
C. Dome and upper portion of B.F. stoves
D. Open hearth furnace roof
Refractory Technology
Refractory Technology
A. 0
B. <1
C. 1
D. >1
A. Green strength
B. Voids
C. Shrinkage
D. Both B. and C.
A. Superduty fireclay
B. Silica
C. Chromite
D. None of these
A. Fireclay
B. Silica
C. Chrome magnesite
D. Zirconia
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.
A. Oxidising atmosphere
B. Reducing atmosphere
C. Electric furnace
D. Neutral atmosphere
A. Increases
B. Decreases
C. Remain same
D. May increase or decrease
A. Density
B. Specific heat
C. Thermal conductivity
D. None of these
A. Electric furnace walls
B. Steel melting furnace
C. Open hearth furnace
D. Burning zone of cement kilns