Blast furnace is the shaft furnace of metallurgical equipment.Blast furnace is used for melting furnace burden(ore,sinter or pellet) that contains metal components,melting need to add air or happen in oxygen-rich conditions,only do like this,we can get sulfur or furnace metal. 

  The blast furnace is one of the most important metallurgical equipment,it has the following characteristics:high thermal efficiency,high specific productivity(specific capacity),high metal recovery rate,low cost,less covering area and so on. 

  The blast furnace is composed of furnace foundation,furnace bottom,furnace hearth,furnace body,furnace top(including feeding device),furnace holder,blower system,water-cooling or evaporated cooling system,melt release device and external crucible.