FURNACE TECHNOLOGY QUIZ

25-30

45-50

65-70

44119

Calcination kiln

Open hearth furnace

By-product coke oven

Sintering furnace

Coke oven heating chamber

Neither A nor B

Both A and B

Open hearth furnace

Maintaining proper draught

All of these

Waste heat recovery from flue gas

Minimising heat losses from furnace walls

< 10

< 5

< 8

< 2

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

Protect the charge from the effects of the products of combustion

Neither A nor B

Both A & B

Assists in temperature equalisation in the charge

All of these

Retards the heat transfer

Permits the use of controlled atmosphere for the protection of stock

Both A and B

Muffle furnace

Hood annealing furnace

Neither A nor B

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

Use of fuel having too low an ash fusion temperature

All of these

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

Boiler furnace

Walking beam reheating furnace

Soaking pits

Rotary kilns