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Chemical Engineering - Refractory Technology

Exercise : Refractory Technology - Section 3
41.
Addition of zircon to silica refractory brick improves its
crushing strength
resistance to slag attack
both (a) and (b)
neither (a) nor (b)
Answer: Option
Explanation:
No answer description is available. Let's discuss.
42.
Which is a neutral refractory ?
Graphite
Magnesite chrome
Silica
Magnesia
Answer: Option
Explanation:
No answer description is available. Let's discuss.
43.
Permeability of bricks is a measure of the
refractoriness.
melting point.
rate at which a fluid will pass through the pores.
expansion during heating.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
44.
With increase in the density of silica refractories, its
resistance to slag attack increases.
spalling resistance reduces.
both (a) and (b).
neither (a) nor (b).
Answer: Option
Explanation:
No answer description is available. Let's discuss.
45.
Magnesite chrome refractories
have better spalling resistance than chrome magnesite refractories.
have very low thermal co-efficient of expansion.
are not at all resistant to the corrosive action of iron oxide.
have very low (50 kg/cm2 ) cold crushing strength (C.C.S.), and can not be used in metalcase form.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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