The 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 occupied land and so on.

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

      The furnace foundation it is builded by concrete or reinforced concrete,we can set up steel support or jack,used to support the furnace bottom.

      The furnace hearth the bottom is cast steel plate or cast iron plate,followed on the plate are asbestos sheeting ,clay brick and magnesia brick.

      The furnace crucible  made of water jacket wall(or build magnesia brick),we also can called it the bed of furnace.

      The furnace body  made of some water jackets,each water jacket 0.8~1.2m wide,1.6~5m high,welded by boiler plate，fixed on the special holder,wind and water pipes are also arranged on holder.

      Blast furnace can be used for matte smelting of copper,nickel,cobalt and other metals,reduction smelting of metals such as lead,zinc, can be also used for melting composition brass and other materials processing.Blast furnace melt is generally massive,fuel is coke.Burden is added in batches from the top,forming a column of material.Air is added from vent below,coke burns in the tuyere(outlet)area,forming the high-temperature melting area;furnace melt reacts violently,continue to melt.When you reduction smelting,melt was clarified in the hearth,metal and slag were released. When you matte smelting,the melt flows into the external crucible from internal crucible,to clarify the separation of matte and slag.Hot flue gas through the melt and reach the top,this process make the melt preheating(kneading concentrate smelting can sinter concentrate),partial melting chemical reactions will happen at the same time.So blast furnace has high thermal efficiency,high specific productivity(specific capacity).

      The productivity of blast furnace usually as below:

      Blast furnace’s common specifications are mainly:0.6 m2、1.2 m2、2 m2、2.6 m2、3.2 m2、5.6 m2、8 m2、10 m2、11m2 and so on.Our company can design and produce different specification and structures blast furnace based on customer’s actual demand.