Pyrometric cone equivalent (PCE) value (Segar cone) of ‘Superduty refractories’ is more than 33 which corresponds to a temperature of _____________ °C?

Related Mcqs:

1. PCE value (Segar cone) of Superduty refractories is more than 33, which is equivalent to a temperature of ____________ °C?

   A. 1520 B. 1630 C. 1670 D. 1730...

2. Pyrometric cone equivalent (PCE) of a refractory is the measure of its_________________?

   A. Spalling resistance B. Fusion point C. Resistance to slag penetration D. Resistance to carbon monoxide attack...

3. Refractoriness of a typical silica brick corresponds to Segar cone number, ’32’, which is equivalent to a temperature of _____________ °C?

   A. 1380 B. 1520 C. 1710 D. 1915...

4. Segar cones are used for the determination of ____________ of refractories?

   A. Softening temperature B. Spalling resistance C. Electrical conductivity D. Resistance to slag attack...

5. Refractoriness/fusion points of ‘Superduty’ refractories is _______________ °C?

   A. 1520-1630 B. 1630-1670 C. > 1730 D. > 2000...

6. Refractoriness under loads (RUL) is quite close to the fusion temperature (PCE) for _____________ bricks?

   A. Fireclay B. Silica C. Dolomite D. Very low alumina...

7. Faster rate of drying of moulded refractories results in high _____________ of refractories?

   A. Green strength B. Voids C. Shrinkage D. Both B. and C....

8. Which of the following bricks has the most close values of RUL and PCE ?

   A. Silica bricks B. Fireclay bricks C. High alumina bricks D. Tar dolomite bricks...

9. Rate of slag attack on refractories increases with rise in temperature due to the___________________?

   A. Decreased viscosity of slag B. Increased thermal conductivity of brick C. Oxidising condition in the furnace D. None of these...

10. Furnace atmosphere for softening temperature determination of refractories (in which Seger Cones are placed) should be __________________?

    A. Oxidising B. Neutral C. Either A. or B. D. Neither A. nor B....