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Chemical Engineering - Refractory Technology

Exercise : Refractory Technology - Section 4
31.
Upper portion of hot metal mixer are lined with mullite bricks, which helps in resisting the
washing action of metal.
corrosion by layer of slag.
both (a) & (b).
neither (a) nor (b).
Answer: Option
Explanation:
No answer description is available. Let's discuss.
32.
Pyrometric cone equivalent (PCE) of a refractory is the measure of its
spalling resistance.
fusion point.
resistance to slag penetration.
resistance to carbon monoxide attack.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
33.
Highest melting (m.p = 3070°C) oxide refractory is
alumina
thoria
zirconia
magnesia
Answer: Option
Explanation:
No answer description is available. Let's discuss.
34.
Chrome magnesite brick is not used for lining the
hearth of soaking pits.
bottom hearth of reheating furnace.
coke oven regenerator.
burning zone of limestone rotary kilns.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
35.
Which one contains minimum percentage of SiO2?
Firebrick
Sillimanite
Semi-silica
Aluminous firebrick
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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