FURNACE TECHNOLOGY QUIZ

Which one shows the diagramatic heat balance in a furnace?

Ostwald chart

None of these

Cox chart

Sankey diagram

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Which furnace employs natural draft?

Boiler

L.D. converter

Rotary kilns

Coke oven

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In a muffle furnace, the muffle

Retards the heat transfer

Assists in temperature equalisation in the charge

All of these

Permits the use of controlled atmosphere for the protection of stock

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Which of the following furnaces will have maximum thermal efficiency?

Soaking pits

Boiler furnace

Rotary kilns

Walking beam reheating furnace

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Reheating furnace (pusher type) is used for heating

Steel sheets

Slabs

Ingots

Steel coils

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An example of indirectly heated furnace is the

Muffle furnace

Reheating furnace

None of these

Soaking pit

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An example of a periodic furnace is the

Coke oven heating chamber

Blast furnace stoves

Rotary kilns

Blast furnace

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Temperature of a furnace fired with low calorific value fuel gas (i.e. lean gas) can be increased by

Oxygen enrichment of combustion air

All of these

Preheating the fuel gas

Preheating the combustion air

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Thermal efficiency of furnaces can be improved by

Maintaining proper draught

Waste heat recovery from flue gas

All of these

Minimising heat losses from furnace walls

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Means for giving direction to the circulation of gases in furnaces are

Fans

All of these

Location of outlet ports and heating & combustion devices

Arrangement of heating stock in the furnaces

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