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The Blast Furnace!!!
The Blast Furnace is a large steel structure about 30 metres high. It is lined with refractory firebricks that can withstand temperatures approaching 2000oC. The furnace gets its name from the method that is used to heat it. Pre-heated air at about 1000oC is blasted into the furnace through nozzles near its base.
You put the iron in the blast furnace.
once it is in the blast furnace it goes through a process and turns into steel
When the iron comes out of the furnace it is steel.
Iron and Steel