FURNACE TECHNOLOGY QUIZ

Advantages of use of preheated combustion air are

Saving in fuel consumption

Increase in flame temperature

All of these

Reduction in scale losses

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following is not a recuperative furnace?

Steamboiler

Coke oven

Soaking pit

Reheating furnace

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following is a natural draft furnace?

Sintering furnace

None of these

Blast furnace stoves

Power plant boilers

TRUE ANSWER : ?
YOUR ANSWER : ?

Amount of coal lost in ash particle, which is carried through the boiler system, depends upon the

Type of burner and combustion chamber

Physical nature, ash content and fineness of the coal

All of these

Amount of excess air supplied and load on the boiler

TRUE ANSWER : ?
YOUR ANSWER : ?

An electric furnace producing heat by means of an electric arc struck between each of three electrodes and the charge is called __________ furnace.

None of these

Arc

Resistance

Low frequency induction

TRUE ANSWER : ?
YOUR ANSWER : ?

Reverberatory furnace is used for

Heating air

Roasting/reduction of ores

Steel melting

Annealing steel coil

TRUE ANSWER : ?
YOUR ANSWER : ?

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

Use of waste heat recovery equipments

Thickness of the stock

Emissivity of the refactory walls

Size of the furance

TRUE ANSWER : ?
YOUR ANSWER : ?

Soaking pits are meant for heating steel

Ingots

Coils

Sheets

Slabs

TRUE ANSWER : ?
YOUR ANSWER : ?

Operation of blast furnace stove is based on the principles of a __________ furnace.

Regenerative

Recuperative

Both A and B

Neither A nor B

TRUE ANSWER : ?
YOUR ANSWER : ?

Thermal efficiency of a limestone calcination rotary kiln may be around __________ percent.

20

65

40

80

TRUE ANSWER : ?
YOUR ANSWER : ?

↑