‘Super refractories’ are made from pure____________________?

Related Mcqs:

Zirconia refractory_________________?

A. Does not react with basic slags B. Is produced from baddeleyite C. Cannot be used as an insulator D. Has poor electrical conductivity at high temperature...

Which of the following impurities reduces the refractoriness of magnesite bricks ?

A. Al2O3 B. CaO C. SiO2 D. All A., B. & C....

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....

Cold crushing strength of a refractory does not depend upon its ____________________?

A. Shape B. Composition C. Firing temperature D. Texture...

Porosity of fireclay refractories is _______________ percent?

A. 5-10 B. 10-25 C. 25-35 D. 35-50...