Roof of a basic electric furnace is made of _____________ bricks?

Related Mcqs:

Lower part of hot metal mixer are lined with _____________ bricks?

A. Superduty fireclay B. High alumina C. Silica D. Carborundum...

Firing of refractory brick is done to __________________?

A. Dehydrate the dried refractory B. Develop stable mineral forms in them C. Form ceramic bonds necessary for development of high crushing strength in the finished product D. All A., B. and C....

Refractories are dried in the _______________?

A. Rotary kilns B. Tunnel kilns C. Sun D. None of these...

High density refractory bricks have lower__________________?

A. Spalling resistance B. Thermal conductivity C. Fusion point D. Slag penetration resistance...

Natural silica___________________?

A. Mainly contains quartz B. Is not stable at high temperature C. Transforms to other allotropic forms i.e. Tridymite and Cristobalite involving very high volume changes D. All A., B. and C....