Silica refractories__________________?
Correct answer: A. crack when subjected to sudden change of temperature
- A. crack when subjected to sudden change of temperature
- B. Cannot be used in the dome of hot blast stoves
- C. Have lower thermal conductivity than fireclay bricks
- D. All A., B. and C.
Explanation
Silica refractories have poor resistance to sudden temperature changes because their phase transformations and low thermal-shock tolerance generate cracking. They are used in hot-blast-stove domes and generally conduct heat better than fireclay bricks, so only statement A is correct.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? support@testustad.com
Practise Plant Design and Economics
803 free Plant Design and Economics MCQs from Chemical Engineering, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Exams that ask Chemical Engineering questions like this
Chemical Engineering is on this paper prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for it.
More Plant Design and Economics questions
Firing of refractory brick is done to __________________?
Ferromagnetic ceramic material is not used in the__________________?
Which one expands on heating ?
The linear thermal expansion of _______________ bricks upto 1000 °C is very low of the order of ≤ 0.5 percent?
Spalling of a refractory means its____________________?
Bauxite calcining rotary kilns are lined with ________________ bricks?