A. Silicon carbide
B. Silicon nitride
C. Crystalline magnesia
D. Zirconium sulphate
A. Refractoriness
B. Melting point
C. Rate at which a fluid will pass through the pores
D. Expansion during heating
Permeability of bricks is a measure of the___________________? Read More »
Stoichiometry A. Quartz
B. Cristobalite
C. Tridymite
D. All have the same specific gravity
Which form of silica has the highest specific gravity ? Read More »
Stoichiometry A. Increases with decrease in porosity
B. Decreases with decreases in porosity
C. Is independent of its porosity and is maximum for insulating bricks
D. Increases with the amount of air entrapped in pores
Thermal conductivity of refractory bricks____________________? Read More »
Stoichiometry A. Electric furnace walls
B. Steel melting furnace
C. Open hearth furnace
D. Burning zone of cement kilns
Magnesite refractories are generally not used in the__________________? Read More »
Stoichiometry A. Silica
B. Fireclay
C. High alumina refractory
D. Carbon black
Which is not an acidic refractory ? Read More »
Stoichiometry A. Graphite
B. Magnesite chrome
C. Silica
D. Magnesia
Which is a neutral refractory ? Read More »
Stoichiometry A. Magnesite
B. Dolomite
C. Fireclay
D. Chrome magnesite
Which is an acidic refractory ? Read More »
Stoichiometry A. 700
B. 1000
C. 1600
D. 2000
A. Cupola
B. Gas producer
C. Bottom of hot metal mixer
D. Roof of open hearth furnace
Fireclay bricks is not used for lining the_______________? Read More »
Stoichiometry