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Chemical Engineering - Refractory Technology

Exercise : Refractory Technology - Section 1
11.
Resistance to slag attack of a refractory
depends on the nature of slag & refractory.
decreases at higher temperature.
decreases, if defective joints & cracks exist in the refractory.
all (a), (b) and (c).
Answer: Option
Explanation:
No answer description is available. Let's discuss.
12.
Grog
contains both alumina and silica.
iscrushed firebrick.
is a non-plastic material.
all (a), (b) and (c).
Answer: Option
Explanation:
No answer description is available. Let's discuss.
13.
Test piece for determination of RUL of a refractory is heated in a/an
oxidising atmosphere
reducing atmosphere
electric furnace
neutral atmosphere
Answer: Option
Explanation:
No answer description is available. Let's discuss.
14.
Magnesite refractories are used for the construction of those furnaces, which are
not required to resist the corrosive action of basic slag.
not subjected to fluctuation in temperature.
used for raising & maintaining high temperature.
both (b) and (c)
Answer: Option
Explanation:
No answer description is available. Let's discuss.
15.
Roof of a basic electric furnace is made of __________ bricks.
superduty fireclay
silica
chromite
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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