Chemical Engineering - Refractory Technology
Exercise :: Refractory Technology - Section 3
| 31. |
Bottom of basic open hearth furnace are constructed of |
| A. |
dead burnt magnesite ramming mass. | | B. |
porous fireclay bricks. | | C. |
semi-silica bricks. | | D. |
silicon carbide bricks. |
Answer: Option A
Explanation:
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| 32. |
Which form of silica has the highest specific gravity ? |
| A. |
Quartz | | B. |
Cristobalite | | C. |
Tridymite | | D. |
All have the same specific gravity |
Answer: Option A
Explanation:
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| 33. |
Ceramic recuperators used for waste heat recovery from high temperature flue gas going out of the furnace is made of |
| A. |
fireclay | | B. |
silicon carbide | | C. |
corrundum | | D. |
siliceous fireclay |
Answer: Option B
Explanation:
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| 34. |
__________ is the measure of the strength of refractory under the combined effect of temperature & load. |
| A. |
Porosity | | B. |
RUL | | C. |
Specific gravity | | D. |
Thermal conductivity |
Answer: Option B
Explanation:
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| 35. |
Fireclay bricks are not used in the |
| A. |
blast furnace | | B. |
hot blast stove | | C. |
cupola | | D. |
wall of coke oven |
Answer: Option D
Explanation:
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