FURNACE TECHNOLOGY QUIZ

Which of the following is a heat treatment furnace?

Rotary kiln

Muffle furnace

Reheating furnace

Annealing furnace

TRUE ANSWER : ?
YOUR ANSWER : ?

The main function of a muffle in the muffle furnace is to

Neither A nor B

Smooth out temperature inequalities on the combustion side of the muffle wall

Both A & B

Protect the charge from the effects of the products of combustion

TRUE ANSWER : ?
YOUR ANSWER : ?

Fuel used in B.F. stove is

Blast furnace gas/mixed gas

Coke oven gas

Furnace oil

Pulverised coal

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following is the most suitable for preheating combustion air above 650°C ?

None of these

Metallic recuperator

Regenerator

Ceramic recuperator

TRUE ANSWER : ?
YOUR ANSWER : ?

Shaft furnaces are used for

Roasting

Calcining

Smelting

All of these

TRUE ANSWER : ?
YOUR ANSWER : ?

In which of the waste heat recovery equipment, the flow of flue gas and air is alternately reversed after a fixed interval of time?

None of these

Waste heat boiler

Recuperator

Regenerator

TRUE ANSWER : ?
YOUR ANSWER : ?

Neutral atmosphere is maintained in a/an __________ furnace.

Cold rolled steel coil annealing

Walking beam reheating

Soaking pit

Open hearth

TRUE ANSWER : ?
YOUR ANSWER : ?

Scaling of furnace stock is reduced by __________ in flue gas.

CO

H₂

High CO/CO₂

All of these

TRUE ANSWER : ?
YOUR ANSWER : ?

Reverberatory furnace is used for

Heating air

Annealing steel coil

Steel melting

Roasting/reduction of ores

TRUE ANSWER : ?
YOUR ANSWER : ?

Thickness of stock does not affect the fuel economy of furnaces, if the material to be heated is of

Both A and B

Neither A nor B

High thermal conductivity

Low emissivity

TRUE ANSWER : ?
YOUR ANSWER : ?

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