Chemical Engineering - Refractory Technology
Exercise :: Refractory Technology - Section 2
| 36. |
Which of the following consumes the maximum tonnage of refractories annually in an integrated steel plant ? |
| A. |
Soaking pits | | B. |
Ceheating furnace | | C. |
L.D. converter | | D. |
Rotary lime kiln |
Answer: Option C
Explanation:
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| 37. |
__________ nozzles are used in continuous casting of steel, |
| A. |
Zircon | | B. |
Thoria | | C. |
Carborundum | | D. |
Beryllia |
Answer: Option A
Explanation:
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| 38. |
silicon carbide refractories have very low |
| A. |
refractoriness (< 1700°C). | | B. |
thermal conductivity. | | C. |
resistance to thermal shock. | | D. |
none of these. |
Answer: Option D
Explanation:
|
| 39. |
Basic bricks are not made of |
| A. |
fireclay | | B. |
magnesite | | C. |
foresterite | | D. |
chromite |
Answer: Option A
Explanation:
|
| 40. |
With increase in the alumina content in firebricks, its fusion point (refractoriness) |
| A. |
decreases linearly | | B. |
remains unchanged | | C. |
increases | | D. |
decreases |
Answer: Option C
Explanation:
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