Refractory materials are never used in the construction of _________________?

Related Mcqs:

Bauxite calcining rotary kilns are lined with ________________ bricks?

A. Fireclay B. Carbon C. 85% alumina D. Corundum...

_____________ is not a single oxide-refractory?

A. Zirconia B. Silicon carbide C. Magnesia D. None of these...

Fireclay bricks are not used in the _________________?

A. Beehive coke oven B. By-product coke oven walls C. Combustion chamber of B.F. stoves D. Coke oven regenerators...

Carbon refractories_____________________?

A. Do not burn/oxidise, when exposed to air on heating B. Are not attacked by slags, as they are not wetted by melts C. Do not resist temperature fluctuations D. Have extremely low thermal & electrical conductivities...

Porosity of fireclay refractories is _______________ percent?

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