FURNACE TECHNOLOGY QUIZ

An example of indirectly heated furnace is the

None of these

Soaking pit

Reheating furnace

Muffle furnace

TRUE ANSWER : ?
YOUR ANSWER : ?

Shaft furnaces are used for

All of these

Calcining

Smelting

Roasting

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following variables affects the furnace capacity?

Thickness of heating stock

Thermal conductivity of stock

Temperature of flue gas

All of these

TRUE ANSWER : ?
YOUR ANSWER : ?

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

Thickness of the stock

Use of waste heat recovery equipments

Emissivity of the refactory walls

Size of the furance

TRUE ANSWER : ?
YOUR ANSWER : ?

In practical operation of any furnace, zero oxygen percentage or theoretical CO₂ percentage in flue gas is rarely achieved, because of

Use of non-preheated combustion air

Use of excessive positive draft in the furnace

Imperfect mixing of fuel & air and infiltration of air

Use of pulverised solid fuels

TRUE ANSWER : ?
YOUR ANSWER : ?

Regenerators are installed in

Neither A nor B

Open hearth furnace

Coke ovens

Both A & B

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 : ?

Reducing atmosphere is maintained in a

L.D. converter

Calcination kiln

Soaking pit

Blast furnace

TRUE ANSWER : ?
YOUR ANSWER : ?

Specific heating capacity of a furnace is expressed as

Weight heated/hr/furnace volume

None of these

Weight heated/hr

Weight heated/furnace volume

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following is not a directly fired furnace?

Calcination kiln

Open hearth furnace

By-product coke oven

Sintering furnace

TRUE ANSWER : ?
YOUR ANSWER : ?

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