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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