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Chemical Engineering - Refractory Technology

Exercise : Refractory Technology - Section 5
6.
Tar dolomite bricks are used in the
basic Bessemer converter
basic open hearth furnace
electric furnaces
all (a), (b) and (c)
Answer: Option
Explanation:
No answer description is available. Let's discuss.
7.
Pick out the wrong statement.
Electrical conductivity of refractory is not important, when these are to be used in electrical furnaces.
Graphite and metals are the good electrical conductor among the refractories and others are all electrical insulators.
Refractories used for lining electrical furnaces should ordinarily have very low electrical conductivity.
Electrical conductivity of porous refractory material is low.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
8.
Which furnace consumes maximum refractory annually in an integrated steel plant ?
Soaking pit
Blastfurnace
L.D. converter
Coke ovens
Answer: Option
Explanation:
No answer description is available. Let's discuss.
9.
Lower part of hot metal mixer are lined with __________ bricks.
superduty fireclay
high alumina
silica
carborundum
Answer: Option
Explanation:
No answer description is available. Let's discuss.
10.
Pick out the wrong statement.
Sand & coke is the main raw material for the manufacture of silicon carbide.
Carbon refractories can not be used in the furnaces operating under reducing conditions.
Mullite can be obtained by the heating of alusite, kyanite or silimanite.
Silica occurs in nature in all cellular, amorphous or crystalline form.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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