FURNACE TECHNOLOGY QUIZ

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

Vertical shaft

Rotary

Tunnel

Both B and C

TRUE ANSWER : ?
YOUR ANSWER : ?

Soaking pits are meant for heating steel

Slabs

Ingots

Coils

Sheets

TRUE ANSWER : ?
YOUR ANSWER : ?

Circulation of gases in furnace is caused by the

Furnace pressure in conjunction with draft in flues

All of these

Change in volume during a change of temperature

Difference in density between hot and cold gases

TRUE ANSWER : ?
YOUR ANSWER : ?

Protective gas used in the annealing furnace for steel coil comprises of

100 %H₂

100% CO

95% N₂ + 5% H₂

5% H₂ + 9% N₂

TRUE ANSWER : ?
YOUR ANSWER : ?

In producer gas making furnace, steam is added along with air to mainly control the

V. of producer gas

Tar content in producer gas

Fusion of coal ash & clinker formation

Temperature of producer gas

TRUE ANSWER : ?
YOUR ANSWER : ?

While the fuel fired furnace can be used upto a maximum temperature of about 1700°C, the electric furnace can be used upto a temperature of about __________ °C.

2000

4500

3000

6000

TRUE ANSWER : ?
YOUR ANSWER : ?

In reverberatory furnace, charge is heated mainly by

Conduction

Radiation of heat from the roof of the combustion chamber

Natural convection

None of these

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following is not a directly fired furnace?

Calcination kiln

Sintering furnace

By-product coke oven

Open hearth furnace

TRUE ANSWER : ?
YOUR ANSWER : ?

Acid dew point temperature (ADT) of a flue gas produced by the combustion of a fuel containing 1% sulphur may be about __________ °C.

80

250

180

130

TRUE ANSWER : ?
YOUR ANSWER : ?

Regenerators are installed in

Open hearth furnace

Both A & B

Coke ovens

Neither A nor B

TRUE ANSWER : ?
YOUR ANSWER : ?

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