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Chemical Engineering - Refractory Technology

Exercise : Refractory Technology - Section 3
16.
Which is not a high alumina refractory ?
Mullite
Corrundum
Bauxite
Dolomite
Answer: Option
Explanation:
No answer description is available. Let's discuss.
17.
Pure oxide refractories are generally monocrystaliine in nature and are self bonded __________ bricks are generally used as moderator in nuclear reactors.
Beryllia
Carborundum
Corundum
Thoria
Answer: Option
Explanation:
No answer description is available. Let's discuss.
18.
Faster rate of drying of moulded refractories results in high __________ of refractories.
green strength
voids
shrinkage
both (b) and (c)
Answer: Option
Explanation:
No answer description is available. Let's discuss.
19.
Rotary kilns meant for calcination of limestone are lined with chrome magnesite in __________ zone.
preheating
cooling
burning
all
Answer: Option
Explanation:
No answer description is available. Let's discuss.
20.
The highest melting pure oxide (m.p. > 3000°C)is
thoria
alumina
beryllia
zirconia
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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