furnace

fur|nace /f'ɜːrnɪs/ (furnaces)
[N-COUNT]
A furnace is a container or enclosed space in which a very hot fire is made, for example to melt metal, burn rubbish, or produce steam.blast fur|nace (blast furnaces)
[N-COUNT]
A blast furnace is a large structure in which iron ore is heated under pressure so that it melts and the pure iron metal separates out and can be collected.

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