Magnesite bricks have poor resistance to attack by _____________ slag?

Related Mcqs:

Carbon refractories are exclusively used in the_________________?

A. Hearth of blast furnace B. Walls of coke oven C. Regenerators of coke oven D. Side wall of soaking pits...

Chrome magnesite brick is not used for lining the___________________?

A. Hearth of soaking pits B. Bottom hearth of reheating furnace C. Coke oven regenerator D. Burning zone of limestone rotary kilns...

Maximum alumina content in high alumina refractory can be as high as _____________ percent?

A. 30 B. 50 C. 70 D. 90...

Pick out the wrong statement ?

A. Electrical conductivity of refractory is not important, when these are to be used in electrical furnaces B. Graphite and metals are the good electrical conductor among the refractories and others are all electrical insulators C. Refractories used for lining electrical furnaces should ordinarily have very low electrical conductivity D. Electrical conductivity of porous refractory … Pick out the wrong statement ?Read More...

Crushing strength of a refractory____________________?

A. Increases with rise in service temperature B. Decreases with rise in service temperature C. Is unaffected with change in service temperature D. Decreases with increase in porosity...