Furnace Technology

A. Physical nature, ash content and fineness of the coal
B. Amount of excess air supplied and load on the boiler
C. Type of burner and combustion chamber
D. All A., B. and C.

A. Electricity
B. Blast furnace gas/mixed gas
C. Coke oven gas
D. Both B. and C.

A. Weight heated/hr
B. Weight heated/furnace volume
C. Weight heated/hr/furnace volume
D. None of these

A. Ton stock/hr/m2 hearth area
B. Ton stock/hr
C. Ton stock/m2 hearth area
D. Both B. and C.

A. 20
B. 40
C. 65
D. 80

A. 10
B. 25
C. 65
D. 90

A. Saving in fuel consumption
B. Reduction in scale losses
C. Increase in flame temperature
D. All A., B. and C.

A. 20
B. 40
C. 60
D. 80

A. Fire tube
B. Water tube
C. Waste heat
D. Natural circulation

A. Glass
B. Stainless steel
C. Potteries
D. Refractory bricks