【摘要】 鞍钢１１ 号高炉（２５８０ ｍ ３）热风炉为提高风温采用附加加热换热系统高效预热技术，用单一的低热值高炉煤气，以燃烧炉和两台大型金属换热器相组合，该系统可把高炉煤气和助燃空气分别预热到２４０ ℃和２７０ ℃，热风温度提高８０～１００ ℃。同时，节省焦炉煤气，取得了显著的经济效益更多还原

【Abstract】 Anshan Iron and Steel (Group) Co has developed a new process, additional preheating heat exchange system only with low calorific value blast furnace gas, in order to increase hot blast temperature The system consists a combustion oven and two large scale recuperators The system is able to preheat air and gas temperature up to 270 ℃ and 240 ℃ respectively The hot blast temperature is raised by 80 100 ℃,the coke oven gas is saved and the dramatic economic profit is obtained as well更多还原