Chemical Engineering - Refractory Technology

36.
Which of the following bricks should not be used, if the furnace is to be used intermit-tantly ?
Firebricks
Silica bricks
Silicon carbide bricks
Sillimanite
Answer: Option
Explanation:
No answer description is available. Let's discuss.

37.
Refractory castables are used for
producing monolithic linings.
patch work.
minimising the number of joints in the structure.
all (a), (b) and (c).
Answer: Option
Explanation:
No answer description is available. Let's discuss.

38.
The largest consumer of refractories is the __________ industry.
cement
metallurgical
fertiliser
power
Answer: Option
Explanation:
No answer description is available. Let's discuss.

39.
Graphite or carbon refractories
exihibit wetting characteristics.
should be used in neutral or reducing atmosphere.
exhibit high shrinkage on thermal treatment.
are not resistant to corrosion by slag.
Answer: Option
Explanation:
No answer description is available. Let's discuss.

40.
'Spinel', a refractory mineral is chemically represented as
MgAl2O4
MgAl2O3
MgSO4
MgAl2O3.2H2O
Answer: Option
Explanation:
No answer description is available. Let's discuss.