Chemical Engineering - Refractory Technology

6. 

Panel test determines the __________ of refractories.

A. fusion point
B. spalling resistance
C. slag penetration resistance
D. refractoriness under load (RUL)

Answer: Option B

Explanation:

No answer description available for this question. Let us discuss.

7. 

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.

Answer: Option B

Explanation:

No answer description available for this question. Let us discuss.

8. 

Fusion point of a basic refractory material is

A. reduced by the addition of acid oxides.
B. increased by the addition of acid oxides.
C. not affected by the addition of acid oxides.
D. always less than 1000°C.

Answer: Option A

Explanation:

No answer description available for this question. Let us discuss.

9. 

RUL of refractories depends on the

A. chemical composition.
B. physical structure.
C. presence of impurities like iron & alkali.
D. all (a), (b) and (c).

Answer: Option D

Explanation:

No answer description available for this question. Let us discuss.

10. 

Which is the stable form of silica between 1470°C and the melting point 1713°C ?

A. Cristobalite
B. Tridymite
C. Quartz
D. None of these

Answer: Option A

Explanation:

No answer description available for this question. Let us discuss.