提高风温是高炉增产节能的有效措施。近二十年来发展四种外燃式和一种新型内燃式高风温热风炉,平均风温1150～1250℃,最高1300～1350℃。但近年来由于晶间应力腐蚀裂纹造成壳体破损,使用风温有所下降。侧置一旁的燃烧室是产生破损与高的热损失之源。顶燃式热风炉利用拱顶空间进行燃烧,取消了侧燃烧室,可使加热面增加25～30％,且结构对称, Increasing wind temperature is an effective measure to increase production and energy saving of the blast furnace. In the past 20 years, four kinds of external combustion type and a new type of internal combustion high wind temperature hot blast stove have been developed. The average air temperature is 1150-1250 ℃ and the highest is 1300-1350 ℃. But in recent years due to intergranular stress corrosion cracking shell damage, the use of air temperature decreased. Side of the combustion chamber is the source of damage and high heat loss. Top-burning stove with vault combustion space, eliminating the side of the combustion chamber, heating surface can increase 25 ~ 30%, and the symmetry of the structure,