In panel test for spalling resistance, the average face temperature of panel assembly is maintained at ______________ °C for 24 hours?

Related Mcqs:

Grog addition in fireclay during brick manufacture is done to_________________?

A. Reduce its shrinkage on heating B. Impart greater spalling resistance C. Enhance the strength of fired refractories D. All A., B. and C....

Cermets are combination of ceramic and metallic materials due to which they have high strength & resistance to high temperature. Cermets are used in the_______________?

A. Hearth of the blast furnace B. Nuclear reactors, missiles & space crafts C. Insulation of high temperature furnaces D. Roof of electric furnaces...

Which refractory must have controlled atmosphere (temperature and humidity) for its safe storage ?

A. Tar bonded dolomite bricks B. Fireclay bricks C. Mullite bricks D. Magnesite bricks...

Sillimanite (Al2O3.SiO2) refractory, which is a neutral refractory, is not used in________________?

A. Pottery furnace B. Glass melting furnace C. Crucibles D. Gas retorts...

Refractoriness under loads (RUL) is quite close to the fusion temperature (PCE) for _____________ bricks?

A. Fireclay B. Silica C. Dolomite D. Very low alumina...