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Furnace Technology

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

H₂
All of these
High CO/CO₂
CO

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

Shaft
Walking beam
Rotary hearth
Tunnel

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Furnace Technology
Which is a continuous furnace?

Glass tank furnace
Annealing furnace
Coke ovens
None of these

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Furnace Technology
Which of the following is a batch furnace?

Cupola
None of these
Glass tank furnace
Reheating furnace

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Furnace Technology
Circulation of gases in furnace is caused by the

Change in volume during a change of temperature
Difference in density between hot and cold gases
All of these
Furnace pressure in conjunction with draft in flues

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Furnace Technology
Combustion of furnace oil in a furnace (soaking pit) with preheated combustion air at 400°C results in saving of about __________ percent furnace oil as compared to its combustion with atmospheric air, if the flue gas outlet temperature from the soaking pit is 1200°C.

40
20
60
5

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