FURNACE TECHNOLOGY QUIZ

The reason for excessive clinker formation in gas producers is the

All of these

Development of hot spots in the fuel bed and an abnormally high rate of gasification

Use of coal/coke containing a high % of fines and ash

Use of fuel having too low an ash fusion temperature

TRUE ANSWER : ?
YOUR ANSWER : ?

In a furnace operation, which is not preheated?

Hydrocarbon containing fuel gases (e.g. coke oven gas, refinery gas etc.)

Both A and B

Solid fuels

Neither A nor B

TRUE ANSWER : ?
YOUR ANSWER : ?

In a heating process, a heat flow diagram in which the quantities of heat in the various items of a heat balance are represented by the width of a band is called the

Cox chart

None of these

Sankey diagram

Ostwald chart

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following is the most important deterrants to an extended use of pulverised coal in boiler firing?

Higher power consumption in its transportation

Ash disposal problem

Erosion of induced draft fan blades

Excessive fly ash discharge from the stack

TRUE ANSWER : ?
YOUR ANSWER : ?

Soaking pits are meant for heating steel

Coils

Sheets

Ingots

Slabs

TRUE ANSWER : ?
YOUR ANSWER : ?

Which one is not an induced draught furnace?

None of these

High pressure boiler

Blast furnace stove

Sintering furnace

TRUE ANSWER : ?
YOUR ANSWER : ?

In a muffle furnace, the muffle

All of these

Permits the use of controlled atmosphere for the protection of stock

Retards the heat transfer

Assists in temperature equalisation in the charge

TRUE ANSWER : ?
YOUR ANSWER : ?

Reverberatory furnace is used for

Steel melting

Annealing steel coil

Heating air

Roasting/reduction of ores

TRUE ANSWER : ?
YOUR ANSWER : ?

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

High CO/CO₂

H₂

CO

All of these

TRUE ANSWER : ?
YOUR ANSWER : ?

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

Decarburising

Oxidation/scaling

Either of the above

Sulphur penetration

TRUE ANSWER : ?
YOUR ANSWER : ?

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