Coke ovens in steel plant are heated by____________________?
A. Electricity
B. Blast furnace gas/mixed gas
C. Coke oven gas
D. Both B. and C.
Furnace Technology
Specific heating capacity of a furnace is expressed as_____________________?
Specific heating capacity of a furnace is expressed as_____________________?
A. Weight heated/hr
B. Weight heated/furnace volume
C. Weight heated/hr/furnace volume
D. None of these
Unit of furnace loading is____________________?
Unit of furnace loading is____________________?
A. Ton stock/hr/m2 hearth area
B. Ton stock/hr
C. Ton stock/m2 hearth area
D. Both B. and C.
Thermal efficiency of a limestone calcination rotary kiln may be around ______________ percent?
Thermal efficiency of a limestone calcination rotary kiln may be around ______________ percent?
A. 20
B. 40
C. 65
D. 80
Maximum thermal efficiency of boiler may be about _____________ percent?
Maximum thermal efficiency of boiler may be about _____________ percent?
A. 10
B. 25
C. 65
D. 90
Advantages of use of preheated combustion air are__________________?
Advantages of use of preheated combustion air are__________________?
A. Saving in fuel consumption
B. Reduction in scale losses
C. Increase in flame temperature
D. All A., B. and C.
Thermal efficiency of blast furnace stoves used for heating blast (air) may be about _____________ percent?
Thermal efficiency of blast furnace stoves used for heating blast (air) may be about _____________ percent?
A. 20
B. 40
C. 60
D. 80
Very high pressure boilers are usually _____________ boilers?
Very high pressure boilers are usually _____________ boilers?
A. Fire tube
B. Water tube
C. Waste heat
D. Natural circulation
Pot furnace which is either regenerative or recuperative, is used in the manufacture of____________________?
Pot furnace which is either regenerative or recuperative, is used in the manufacture of____________________?
A. Glass
B. Stainless steel
C. Potteries
D. Refractory bricks
Soaking pits are meant for heating steel_________________?
Soaking pits are meant for heating steel_________________?
A. Ingots
B. Coils
C. Sheets
D. Slabs