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Chemical Engineering - Refractory Technology

Exercise : Refractory Technology - Section 3
21.
Refractories used in/for __________ should have low thermal conductivity.
coke ovens
insulation
regenerators
muffle furnaces
Answer: Option
Explanation:
No answer description is available. Let's discuss.
22.
10 to 30% magnesite is added to chromite to produce chrome-magnesite refractories. Magnesite addition is mainly done to improve the __________ of chromite.
spalling resistance
refractoriness
crushing strength
resistance to slag
Answer: Option
Explanation:
No answer description is available. Let's discuss.
23.
Silica bricks are never used for lining the
beehive coke ovens.
by-product coke ovens.
dome of blast furnace stoves.
roof of open hearth furnace.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
24.
Which is not a natural insulating material?
Diatomaceous earth/kieselgur
Asbestos
Vermiculite
None of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
25.
Magnesite refractories are generally not used in the
electric furnace walls.
steel melting furnace.
open hearth furnace.
burning zone of cement kilns.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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