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How Iron is produced:
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Transcript
How Iron is produced:
The conveyor buckets takes the charge of iron ore, coke and limestone to the top of furnace.
- The charge is then loaded into the furnace using the charging bells. Once inside the furnace the whole mixture is ‘fired’, by the hot air produced from the tuyere. This brings the inside of the furnace to a temperature of 2000℃.
The limestone combines with impurities and forms a slag and as this is lighter than the iron it floats to the top and is tapped off.
Charging Bells:
The Charging Bells are used to conserve as much energy/heat inside the furnace as possible. There are in fact two Bells in the system called, the Small Bell and the Large Bell.
The Small Bell is filled directly from the Conveyor System, and when it is close to being full it is opened to allow the Charge drop into the Large Bell (Which is closed). The Large Bell is then opened and the small bell is closed to allow the charge to drop into the Furnace. Using this system greatly reduces the amount of heat that is lost to the atmosphere.
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