Q. __________ is the measure of the strength of refractory under the combined effect of temperature & load.

View solution

Q. Fireclay bricks are not used in the

View solution

Q. Refractories used in/for __________ should have low thermal conductivity.

View solution

Q. 10 to 30% magnesite is added to chromite to produce chrome-magnesite refractories. Magnesite addition is mainly done to improve the __________ of chromite.

View solution

Q. Silica bricks are never used for lining the

View solution

Q. Which is not a natural insulating material?

View solution

Q. Magnesite refractories are generally not used in the

View solution

Q. __________ is not a single oxiderefractory.

View solution

Q. Hot blast main (carrying air at 1000°C) in blast furnace are lined with __________ bricks.

View solution

Q. High alumina refractory compared to fireclay bricks have

View solution

Q. Refractory bricks with lower permeability is produced by using

View solution

Q. Refractory bricks having lower porosity have

View solution

Q. Most Cermets, which normally have high thermal conductivity and high thermal shock resistance, comprises of ceramic & metallic components of __________ percent respectively.

View solution

Q. Pick out the wrong statement.

View solution

Q. __________ bricks should not be used in oxidising atmosphere.

View solution

Q. Pick out the wrong statement.

View solution

Q. Fusion temperature of pure silica (SiO₂) is __________ °C.

View solution

Q. Addition of zircon to silica refractory brick improves its

View solution

Q. Which is a neutral refractory ?

View solution

Q. Permeability of bricks is a measure of the

View solution