FURNACE TECHNOLOGY QUIZ

Blast furnace

Coke oven heating chamber

Rotary kilns

Blast furnace stoves

None of these

Computing the excess/deficiency of combustion air

Computation of flue gas analysis

Calculation of flue gas temperature

Flame temperature

Heat transfer rate in the furnace

Oxygen in the flue gas

Stack loss

Use of excessive positive draft in the furnace

Use of non-preheated combustion air

Use of pulverised solid fuels

Imperfect mixing of fuel & air and infiltration of air

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

Both A & B

Neither A nor B

Protect the charge from the effects of the products of combustion

Before the I.D fan

After the I.D. fan

Anywhere after the I.D. fan

Near the top of the chimney

Portection of the periphery of the charge from excessive radiation

Reduction in the temperature of furnace gases

Elimination of cold spot at the bottom of the charge

Increase in heating capacity/m² of floor space

Affects its crystalline structure

All of these

Is favoured by CO₂

Is the removal of carbon from iron carbide (Fe₃C)

Coils

Sheets

Ingots

Slabs

Both A and B

Recuperative

Neither A nor B

Regenerative