Roof of a basic open hearth furnace is lined with ______________ bricks?

Related Mcqs:

1. Bottom of basic open hearth furnace are constructed of__________________?

   A. Dead burnt magnesite ramming mass B. Porous fireclay bricks C. Semi-silica bricks D. Silicon carbide bricks...

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

   A. Superduty fireclay B. Silica C. Chromite D. None of these...

3. Hot blast main (carrying air at 1000°C) in blast furnace are lined with ______________ bricks?

   A. Silica B. Fireclay C. Magnesite D. Zirconia...

4. Outer combustion chamber of blast furnace stove is lined with _____________ bricks?

   A. Fireclay B. Silica C. Chrome magnesite D. Zirconia...

5. ____________ of carbon blocks in the hearth of blast furnace helps in avoiding skull formation, when it becomes cold?

   A. High thermal conductivity B. Low porosity C. Non-wetting characteristics D. High density...

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

   A. Non-wetting characteristic B. High thermal conductivity C. High crushing strength D. None of these...

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

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

8. Bauxite calcining rotary kilns are lined with ________________ bricks?

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

9. Upper portion of hot metal mixer are lined with mullite bricks, which helps in resisting the_________________?

   A. Washing action of metal B. Corrosion by layer of slag C. Both A. & B. D. Neither A. nor B....

10. Slide gates in teeming laddie used for steel pouring in ingot moulds is lined with _____________ bricks?

    A. Bakelite impregnated or fused periclase B. Silica C. Semi-silica D. Fireclay...