Skull is not formed on the carbon blocks in the hearth of a blast furnace, when it becomes cold, because of its_______________?

Related Mcqs:

Chrome magnesite bricks are used in the_________________?

A. Side walls of soaking pits and arc furnaces B. Copper melting furnaces & converters C. Burner block of glass tanks D. All A., B. and C....

Which is not a basic refractory ?

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

Refractoriness of a typical silica brick corresponds to Segar cone number, ’32’, which is equivalent to a temperature of _____________ °C?

A. 1380 B. 1520 C. 1710 D. 1915...

Hot face insulating linings of high purity alumina fused mullite are used, where_________________?

A. Very high temperatures are involved B. Highly reducing conditions are involved C. Presence of iron or silica is harmful D. All A., B. and C....

Colour of fireclay bricks is_________________?

A. Light buff to reddish buff B. Yellow C. Black D. None of these...