Silica refractories are not used in _________________?

Related Mcqs:

Chrome magnesite bricks are_________________?

A. Acidic in nature B. Neutral in nature C. Having higher RUL than silica bricks D. Made by mixing 30% Chromite and 70% Periclase...

Segar cones are used for the determination of ____________ of refractories?

A. Softening temperature B. Spalling resistance C. Electrical conductivity D. Resistance to slag attack...

____________ of carbon blocks in the hearth of blast furnace helps in avoiding skull formation, when it becomes cold?

A. High thermal conductivity B. Low porosity C. Non-wetting characteristics D. High density...

Spalling resistance of a refractory cannot be increased by ____________________?

A. Increasing its porosity B. Using a coarser grog during its manufacture C. Decreasing its thermal co-efficient of expansion D. Making it denser...

Fireclay refractories have __________________?

A. Low co-efficient of thermal expansion B. Poor thermal spalling resistance C. Tendency to expand unduly high during firing D. Very high cost...