FURNACE TECHNOLOGY QUIZ

Thermal efficiency of blast furnace stoves used for heating blast (air) may be about __________ percent.

40

20

80

60

TRUE ANSWER : ?
YOUR ANSWER : ?

Fuel economy in furnaces can be achieved by

Using oxygen enriched combustion air

All of these

Preheating the combustion air

Reducing the heat loss through furnace openings & doors

TRUE ANSWER : ?
YOUR ANSWER : ?

The heating capacity of continuous reheating furnace depends upon the

Ratio of wall surface to stock surface

Emissivity of the stock

Hearth area and furnace temperature

All of these

TRUE ANSWER : ?
YOUR ANSWER : ?

Specific heating capacity of a furnace is expressed as

None of these

Weight heated/furnace volume

Weight heated/hr

Weight heated/hr/furnace volume

TRUE ANSWER : ?
YOUR ANSWER : ?

Fuel used in B.F. stove is

Pulverised coal

Coke oven gas

Blast furnace gas/mixed gas

Furnace oil

TRUE ANSWER : ?
YOUR ANSWER : ?

Calcination of limestone to produce lime is done in a __________ kiln.

Rotary

Tunnel

Vertical shaft

Both B and C

TRUE ANSWER : ?
YOUR ANSWER : ?

Neutral atmosphere is maintained in a/an __________ furnace.

Soaking pit

Walking beam reheating

Open hearth

Cold rolled steel coil annealing

TRUE ANSWER : ?
YOUR ANSWER : ?

Which is a regenerative furnace?

Coke oven heating chamber

Both A and B

Neither A nor B

Open hearth furnace

TRUE ANSWER : ?
YOUR ANSWER : ?

Maximum heat transfer in high temperature furnaces is by

Radiation

Convection

Conduction

Either A, B or C; depends on the type of furnace

TRUE ANSWER : ?
YOUR ANSWER : ?

Which furnace employs an I.D. fan for the removal of flue gases from the furnace?

Blast furnace stoves

High pressure boiler

Beehive coke oven

Coke oven

TRUE ANSWER : ?
YOUR ANSWER : ?

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