SiO2 percentage in firebrick is about____________________?

Related Mcqs:

Silica bricks are attacked by basic slags at high temperature. Which of the following is not used solely as a binding material ?

A. Aluminium phosphate B. Water C. Lime D. Plaster of Paris...

Thermal spalling mainly occurs during _____________ of furnaces?

A. Cooling down B. Warming up C. Both A. & B. D. Neither A. nor B....

Resistance to slag attack of a refractory _____________________?

A. Depends on the nature of slag & refractory B. Decreases at higher temperature C. Decreases, if defective joints & cracks exist in the refractory D. All A., B. and C....

Which of the following bricks should not be used, if the furnace is to be used intermittently ?

A. Firebricks B. Silica bricks C. Silicon carbide bricks D. Sillimanite...

Mullite is chemically represented by_________________?

A. Al2O3. 2SiO2 B. 3Al2O3. 2SiO2 C. Al2O3. SiO2 D. 2Al2O3. 3SiO2...