Spalling resistance of a refractory cannot be increased by ____________________?
Correct answer: D. Making it denser
- A. Increasing its porosity
- B. Using a coarser grog during its manufacture
- C. Decreasing its thermal co-efficient of expansion
- D. Making it denser
Explanation
Spalling resistance improves with some porosity, coarser grog, and a lower thermal expansion coefficient because these reduce thermal stresses. Making the refractory denser generally reduces its ability to accommodate thermal shock.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? support@testustad.com
Practise Chemical Process Principles
2,710 free Chemical Process Principles 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 Chemical Process Principles questions
High refractoriness of refractory bricks means, that it has a________________?
Sillimanite (Al2O3.SiO2) refractory, which is a neutral refractory, is not used in________________?
Rate of slag attack on refractories increases with rise in temperature due to the___________________?
Which property is important for bricks used in the combustion chamber & dome of blast furnace stoves ?
Cold crushing strength of refractories depends upon its_________________?
Maximum apparent porosity of magnesite bricks is about _____________ percent?