Converter is used for steel blowing or sulfur blowing as a metallurgical furnace,its body can rotate. Converter furnace is made of steel plates,like a cylinder,refractory to be lining,the heat converting need was provided by the chemical reaction,without external heat source.It is important steelmaking equipment,can also be used for copper,nickel smelting.

According to the properties of the refractory,converter is divided into acid lined converter(lined with siliceous material) and basic lined converter(lined with magnesia or dolomite);according to the part gas into,converter is divided into bottom-blown converter,top-blown converter and side-blown converter;according to the gas adopted, converter is divided into air converter and oxygen converter.