FURNACE TECHNOLOGY QUIZ

An example of shaft furnace is the

Glass melting tank

Soaking pit

Blast furnace

L.D. converter

TRUE ANSWER : ?
YOUR ANSWER : ?

The purpose of controlling the furnace atmosphere is to prevent surface attack by

Oxidation/scaling

Decarburising

Either of the above

Sulphur penetration

TRUE ANSWER : ?
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Fuel economy in furnaces can be achieved by

All of these

Reducing the heat loss through furnace openings & doors

Preheating the combustion air

Using oxygen enriched combustion air

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Soaking pits are meant for heating steel

Slabs

Ingots

Sheets

Coils

TRUE ANSWER : ?
YOUR ANSWER : ?

Regenerators are installed in

Coke ovens

Both A & B

Open hearth furnace

Neither A nor B

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YOUR ANSWER : ?

The thermal efficiency of a steel slab reheating furnace (walking beam type) may be about __________ percent.

70

85

40

15

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Circulation of gases in furnace is caused by the

Difference in density between hot and cold gases

All of these

Furnace pressure in conjunction with draft in flues

Change in volume during a change of temperature

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YOUR ANSWER : ?

Which one is not an induced draught furnace?

High pressure boiler

None of these

Sintering furnace

Blast furnace stove

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Test specimen for determination of refractoriness under load (RUL) of a refractory is heated in a

Carbon resistance furnace

Furnace employing neutral atmosphere

Furnace employing negative pressure

Reducing atmosphere

TRUE ANSWER : ?
YOUR ANSWER : ?

Fuel economy in an industrial furnace operation can not be achieved by the use of

Stoichiometric combustion air

Combustion air not enriched with oxygen

Non-preheated combustion air

Recupterators

TRUE ANSWER : ?
YOUR ANSWER : ?

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