首页|Research on High Efficiency and High Blast Temperature Technology for Modern Blast Furnace

Research on High Efficiency and High Blast Temperature Technology for Modern Blast Furnace

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Increasing the blast temperature can effectively reduce the fuel consumption of blast furnace(BF)and promote the BF stable and smooth production，which is one of the important developing directions of green and low carbon ironmaking technology。The heat transformation process and heat transfer characteristics of hot blast stove(HBS)are researched。The relationship between heating area and blast temperature of HBS is expounded through the study and analysis of heat transfer mechanism，and the view point of increasing heat flux to improve heat transfer in HBS is put forward。The relationships between theoretical combustion temperature，dome temperature and blast temperature of HBS are researched。The technical innovation and practice of high blast temperature are introduced by applying low heat value BF gas and recovering flue gas waste heat of HBS by coupling preheating and energy ladder-level utilization。High efficiency utilization and high value conversion of low heat value BF gas，increasing blast temperature，reducing fuel ratio and CO2 emission are the key-common technologies of BF ironmaking in the future。

IronmakingBlast furnaceHigh blast temperatureHot blast stoveDome temperatureWaste heat recoveryEnergy transformation

Fuming ZHANG

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Shougang Group Co.,Ltd.,Beijing 100041,China

China Symposium on Sustainable Iron- and Steelmaking Technology;Chinese Society for Metals

Changsha(CN)

2021 China Symposium on Sustainable Iron- and Steelmaking Technology

34-40

2021