Q. Zirconia refractories are not used in

View solution

Q. Carbon refractories

View solution

Q. Magnesite refractories have low resistance to

View solution

Q. Which property is important for bricks used in the combustion chamber & dome of blast furnace stoves ?

View solution

Q. The maximum linear expansion of silica bricks during firing is about __________ percent.

View solution

Q. Maximum shrinkage in volume occurring during burning/firing of dried refractories may be as high as __________ percent.

View solution

Q. Porosity of fireclay refractories is __________ percent.

View solution

Q. SiO₂ percentage in firebrick is about

View solution

Q. Porosity is induced in insulating refractories by adding

View solution

Q. Magnesite bricks have poor resistance to attack by __________ slag.

View solution

Q. An ideal refractory should have high

View solution

Q. Ganister is a source of the

View solution

Q. Which brick undergoes maximum shrinkage on drying ?

View solution

Q. Which is the stable form of silica upto 1470°C ?

View solution

Q. Hot face insulating linings of high purity alumina fused mullite are used, where

View solution

Q. To resist spalling tendency, a refractory should have

View solution

Q. Cold crushing strength of fireclay bricks is about __________ kgf/cm².

View solution

Q. Spalling tendency of refractories is reduced by increasing its

View solution

Q. Carbon refractories are exclusively used in the

View solution

Q. Spalling of a refractory means its

View solution