Chemical Engineering - Refractory Technology

6.
Panel test determines the __________ of refractories.
fusion point
spalling resistance
slag penetration resistance
refractoriness under load (RUL)
Answer: Option
Explanation:
No answer description is available. Let's discuss.

7.
Fireclay bricks are not used in the
beehive coke oven.
by-product coke oven walls.
combustion chamber of B.F. stoves.
coke oven regenerators.
Answer: Option
Explanation:
No answer description is available. Let's discuss.

8.
Fusion point of a basic refractory material is
reduced by the addition of acid oxides.
increased by the addition of acid oxides.
not affected by the addition of acid oxides.
always less than 1000°C.
Answer: Option
Explanation:
No answer description is available. Let's discuss.

9.
RUL of refractories depends on the
chemical composition.
physical structure.
presence of impurities like iron & alkali.
all (a), (b) and (c).
Answer: Option
Explanation:
No answer description is available. Let's discuss.

10.
Which is the stable form of silica between 1470°C and the melting point 1713°C ?
Cristobalite
Tridymite
Quartz
None of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.