Furnace Technology

A. Ingots
B. Slabs
C. Steel coils
D. Steel sheets

A. 80
B. 130
C. 180
D. 250

A. 95% N2 + 5% H2
B. 5% H2 + 9% N2
C. 100% CO
D. 100% H2

A. Speed of the fan
B. Damper
C. Variation in the pitch of fan blades
D. All A., B. and C.

A. Regenerator
B. Metallic recuperator
C. Ceramic recuperator
D. None of these

A. Arc
B. Resistance
C. Low frequency induction
D. High frequency induction

A. 5
B. 20
C. 50
D. 80

A. By-product coke oven
B. Calcination kiln
C. Sintering furnace
D. Open hearth furnace

A. Reduces its thermal efficiency
B. Is indicated by flame sting out
C. Increases the flue gas temperature
D. None of these

A. 250
B. 650
C. 850
D. 1000