Blast furnace
= Blast furnace
A shaft furnace with a blast of hot air, in which descending ore and ascending gases exchange <heat> and react. In <iron> extraction it supplies molten <pig iron> and <slag>.
= Blast furnace
A shaft furnace with a blast of hot air, in which descending ore and ascending gases exchange <heat> and react. In <iron> extraction it supplies molten <pig iron> and <slag>.