FURNACE TECHNOLOGY QUIZ

Tunnel kilns are usually used for

Roasting of pyrites

Drying/tempering of refractories

Reheating of slabs

Melting of glass

TRUE ANSWER : ?
YOUR ANSWER : ?

Heat transfer rate to the stock/charge in the furnace does not depend upon the

Size of the furance

Thickness of the stock

Use of waste heat recovery equipments

Emissivity of the refactory walls

TRUE ANSWER : ?
YOUR ANSWER : ?

Ostwald charts are meant for

None of these

Computation of flue gas analysis

Calculation of flue gas temperature

Computing the excess/deficiency of combustion air

TRUE ANSWER : ?
YOUR ANSWER : ?

Heat balance of furnace provides means of determining the

Thermal efficiency of the process

Sources of heat losses

Scope of reduction of heat losses

All of these

TRUE ANSWER : ?
YOUR ANSWER : ?

Which one is not an induced draught furnace?

Blast furnace stove

None of these

Sintering furnace

High pressure boiler

TRUE ANSWER : ?
YOUR ANSWER : ?

Reducing atmosphere is maintained in a

Soaking pit

Blast furnace

L.D. converter

Calcination kiln

TRUE ANSWER : ?
YOUR ANSWER : ?

Overall thermal efficiency of a lumpy coal fired suitably designed heating furnace, if operated & maintained properly may be about __________ percent.

44119

65-70

25-30

45-50

TRUE ANSWER : ?
YOUR ANSWER : ?

Which furnace employs natural draft?

Coke oven

Rotary kilns

Boiler

L.D. converter

TRUE ANSWER : ?
YOUR ANSWER : ?

In which of the following furnaces, the gases are sucked through the stock bed from below?

Sintering machine

None of these

Soaking pit

Beehive oven

TRUE ANSWER : ?
YOUR ANSWER : ?

The function of an economiser in a boiler is to preheat the

Furnace oil

Feedwater

Combustion air

Pulverised coal

TRUE ANSWER : ?
YOUR ANSWER : ?

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