FURNACE TECHNOLOGY QUIZ

Soaking pits are meant for heating steel

Slabs

Ingots

Coils

Sheets

TRUE ANSWER : ?
YOUR ANSWER : ?

Neutral atmosphere is maintained in a/an __________ furnace.

Walking beam reheating

Open hearth

Cold rolled steel coil annealing

Soaking pit

TRUE ANSWER : ?
YOUR ANSWER : ?

Rate of heat release in a furnace, which is the measure of heat intensity is defined as

None of these

Kcal/m³ combustion space

Kcal/hr/m³ combustion space

Kcal/hr

TRUE ANSWER : ?
YOUR ANSWER : ?

Calcination of limestone to produce lime is done in a __________ kiln.

Tunnel

Vertical shaft

Rotary

Both B and C

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following accentuates clinker-ing troubles on furnace grate burning coal?

All of these

Low reactivity of carbonised residue containing high proportion of iron & sulphur

Low forced draft & fuel bed temperature

Thick firebed and preheated primary air

TRUE ANSWER : ?
YOUR ANSWER : ?

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

Ceramic recuperator

Regenerator

Metallic recuperator

None of these

TRUE ANSWER : ?
YOUR ANSWER : ?

Dampers are located

After the I.D. fan

Anywhere after the I.D. fan

Near the top of the chimney

Before the I.D fan

TRUE ANSWER : ?
YOUR ANSWER : ?

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

Neither A nor B

Both A & B

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

Protect the charge from the effects of the products of combustion

TRUE ANSWER : ?
YOUR ANSWER : ?

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

High CO/CO₂

CO

All of these

H₂

TRUE ANSWER : ?
YOUR ANSWER : ?

The reason for excessive clinker formation in gas producers is the

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

All of these

Use of fuel having too low an ash fusion temperature

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

TRUE ANSWER : ?
YOUR ANSWER : ?