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Chemical Engineering - Refractory Technology

Exercise : Refractory Technology - Section 2
46.
High density refractory bricks have lower
spalling resistance.
thermal conductivity.
fusion point.
slag penetration resistance.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
47.
Silliminite (Al2O3.SiO2) refractory, which is a neutral refractory, is not used in
pottery furnace
glass melting furnace
crucibles
gas retorts
Answer: Option
Explanation:
No answer description is available. Let's discuss.
48.
Zircon refractories have
low co-efficient of expansion.
high RUL (1600°C) and refractoriness (> 2000°C).
high spalling resistance.
all (a), (b) and (c).
Answer: Option
Explanation:
No answer description is available. Let's discuss.
49.
Cermets are
composite material containing both ceramic & metallic constituents.
having high strength & resistance to high temperature.
used in space vehicles, missiles & nuclear energy plants.
all (a), (b) and (c).
Answer: Option
Explanation:
No answer description is available. Let's discuss.
50.
Carbon refractory blocks
are wetted by molten iron.
are used in the hearth of blast furnace.
are acidic in nature.
all (a), (b) and (c).
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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