Outer combustion chamber of blast furnace stove is lined with _______________ bricks?

Related Mcqs:

1. Hot metal runner in blast furnace are lined with ______________ bricks?

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

2. Which property of refractories is the most important for top section of the blast furnace ?

   A. Resistance to abrasion B. Resistance to slag penetration C. Stability of volume at high temperature D. Resistance to corrosion by slag...

3. Roof of a basic electric furnace is made of ______________ bricks?

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

4. Refractory bricks having lower porosity have _____________________?

   A. High insulating properties B. Low heat capacity C. Low thermal conductivity D. Greater strength...

5. Silica bricks are never used for lining the_________________?

   A. Beehive coke ovens B. By-product coke ovens C. Dome of blast furnace stoves D. Roof of open hearth furnace...

6. Permeability of bricks is a measure of the___________________?

   A. Refractoriness B. Melting point C. Rate at which a fluid will pass through the pores D. Expansion during heating...

7. Refractory bricks with lower permeability is produced by using _________________?

   A. Higher firing temperature B. Higher moulding pressure C. Finer grog size D. All A., B. and C....

8. 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...

9. High porosity refractory bricks have________________?

   A. Poor resistance to the penetration of molten slag, metal & flue gases B. Poor heat conductivity & low strength C. Better thermal spalling resistance D. All A., B. and C....

10. An insulating refractory brick should have high porosity and low thermal conductivity. Which of the following is not used for inducing porosity in the insulating refractory bricks during its manufacture ?

    A. Cork B. Saw dust C. Sand D. Chemically prepared foam...