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Furnace Technology-Data Intensity 4 Multiple Questions and Answers.
| 6. | Protective gas used in the annealing furnace for steel coil comprises of___? | ||
| A. | 95% N2 + 5% H2 | ||
| B. | 5% H2 + 9% N2 | ||
| C. | 100% CO | ||
| D. | 100% H2 | ||
| 7. | Acid dew point temperature (ADT) of a flue gas produced by the combustion of a fuel containing 1% sulphur may be about ______ �C? | ||
| A. | 80 | ||
| B. | 130 | ||
| C. | 180 | ||
| D. | 250 | ||
| 8. | Reheating furnace (pusher type) is used for heating____? | ||
| A. | Ingots | ||
| B. | Slabs | ||
| C. | Steel coils | ||
| D. | Steel sheets | ||
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