Presence of MgO in alumino-silicate refractories _______________ its refractoriness?

Related Mcqs:

Maximum shrinkage in volume occurring during burning/firing of dried refractories may be as high as ______________ percent?

A. 10 B. 15 C. 20 D. 30...

Which is not a basic refractory ?

A. Chrome magnesite B. Magnesite C. Dolomite D. Silicon carbide...

Firing temperature is minimum (1250-1400 °C) for _______________ bricks?

A. Fireclay B. Direct bonded basic C. Silica D. Magnesite...

Porosity of silica bricks varies from ______________ percent?

A. 5 to 10 B. 20 to 30 C. 45 to 60 D. 60 to 75...

Sillimanite is a _____________ refractory?

A. Basic B. Neutral C. High alumina D. Insulating...