FURNACE TECHNOLOGY QUIZ

Oxygen percentage in the flue gas coming out of a gaseous fuel fired furnace should be ideally about __________ percent.

< 8

< 2

< 10

< 5

TRUE ANSWER : ?
YOUR ANSWER : ?

Pulverised fuel fired furnaces employ __________ fuel firing.

Horizontal

All of these

Tangential

Vertical

TRUE ANSWER : ?
YOUR ANSWER : ?

An improved and fuel efficient version of the pusher type reheating furnace is the __________ furnace.

Tunnel

Rotary hearth

Shaft

Walking beam

TRUE ANSWER : ?
YOUR ANSWER : ?

A refractory wall separating the stock and the source of heat is provided in a

Muffle furnace

Continuous furnace

Updraft kiln

None of these

TRUE ANSWER : ?
YOUR ANSWER : ?

Fuel economy in furnaces can be achieved by

Reducing the heat loss through furnace openings & doors

All of these

Using oxygen enriched combustion air

Preheating the combustion air

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following is not an additive for flue gases from furnace to reduce its dew-point?

Alkaline powders

Fine dolomite

Ammonia

None of these

TRUE ANSWER : ?
YOUR ANSWER : ?

Reheating furnace (pusher type) is used for heating

Slabs

Steel sheets

Ingots

Steel coils

TRUE ANSWER : ?
YOUR ANSWER : ?

Large tonnage of refractory bricks are dried in a

Muffle furnace

Shaft furnace

Rotary hearth furnace

Tunnel kiln

TRUE ANSWER : ?
YOUR ANSWER : ?

Which is a continuous furnace?

None of these

Coke ovens

Glass tank furnace

Annealing furnace

TRUE ANSWER : ?
YOUR ANSWER : ?

The heating capacity of continuous reheating furnace depends upon the

Hearth area and furnace temperature

Ratio of wall surface to stock surface

All of these

Emissivity of the stock

TRUE ANSWER : ?
YOUR ANSWER : ?

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