Vacuum steel degassing units are lined with__________________?

Related Mcqs:

1. 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

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

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

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

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

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

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

5. Rotary kilns meant for calcination of limestone are lined with chrome magnesite in ______________ zone?

   A. Preheating
   B. Cooling
   C. Burning
   D. All the above

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

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

7. 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.

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

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

9. _____________ nozzles are used in continuous casting of steel?

   A. Zircon
   B. Thoria
   C. Carborundum
   D. Beryllia

10. Which furnace consumes maximum refractory annually in an integrated steel plant ?

    A. Soaking pit
    B. Blast furnace
    C. L.D. converter
    D. Coke ovens