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Chemical Engineering - Refractory Technology

Exercise : Refractory Technology - Section 3
46.
Fireclay bricks is not used for lining the
cupola.
gas producer.
bottom of hot metal mixer.
roof of open hearth furnace.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
47.
Pure bauxite is the best raw material for the manufacture of high alumina refractories, in which maximum alumina content can be as high as __________ percent.
55
70
80
90
Answer: Option
Explanation:
No answer description is available. Let's discuss.
48.
Refractoriness under loads (RUL) is quite close to the fusion temperature (PCE) for __________ bricks.
fireclay
silica
dolomite
very low alumina
Answer: Option
Explanation:
No answer description is available. Let's discuss.
49.
Refractories subjected to alternate cycles of heating & cooling are liable to loose their resistance to
thermal spalling
slag attack
fusion under load
CO attack
Answer: Option
Explanation:
No answer description is available. Let's discuss.
50.
Thermal spalling mainly occurs during __________ of furnaces.
cooling down
warming up
both (a) & (b)
neither (a) nor (b)
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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