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为了节约能源和降低炼铁焦比,近二十年来热风炉的技术发展主要是围绕提高风温进行的,因此先后出现了外燃式、改造型内燃式以及顶燃式热风炉。提高风湿的方法有二:一是采用高热值燃料或预热助燃空气以提高拱顶温度,这就是常说的顶温比风温高200℃～300℃,而且随着风温提高差值增大;二是采取技术措施,缩小顶温与风温之差。目前所有热风炉都是按前者设计的,这给燃料配备、上部砌筑材质、炉顶结
In order to save energy and reduce the iron-making coke ratio, the technological development of hot blast stove in the recent two decades mainly focuses on increasing the air temperature. Therefore, there are emerging external combustion type, reformed internal combustion type and top-burning type hot-blast stove successively. There are two ways to improve rheumatism: First, the use of high calorific fuel or preheat combustion air to increase the vault temperature, which is often said that the top temperature higher than the temperature of 200 ℃ ~ 300 ℃, and with the increase of the difference between the temperature increase Big; two is to take technical measures to reduce the difference between the top temperature and the wind temperature. At present, all hot blast stoves are designed according to the former, which gives the fuel equipment, the upper masonry material, the roof knot