Furnace Technology

A. Open hearth furnace
B. Muffle furnace
C. Soaking pit
D. Reheating furnace

A. Air pressure
B. Fuel gas pressure
C. Speed of I.D. fan
D. Damper

A. Blast furnace stove
B. Sintering furnace
C. High pressure boiler
D. None of these

A. Graphite powder
B. Thoria
C. Zircon powder
D. Beryllium

A. Blast furnace
B. Steam boiler
C. Salt bath furnace
D. Annealing furnace

A. Calcination kiln
B. Blast furnace
C. Soaking pit
D. L.D. converter

A. Air supplied and furnace temperature
B. Burner design (thoroughness of mixing versus stratification)
C. Air preheat and the flow of gases in the furnace (mixing by induction, by acceleration or by
change of direction)
D. All A., B. and C.

A. Type of fuels viz. solid, liquid or gaseous
B. Flue gas temperature
C. Emissivity of refractory walls
D. Initial temperature of the charged stock

A. Increasing the draft in the furnace
B. Preheating the fuel gas
C. Oxygen enrichment of combustion air
D. Preheating the combustion air

A. 10-15
B. 25-30
C. 45-50
D. 65-70