论文部分内容阅读
In 2009,the pig iron output of China increased dramatically up to 543.75 Mt and was 15.87%higher than that in 2008,accounting for 60.53%of the world production.The processing of pig iron must consume huge amount of iron ores and coal and consequently leads to the shortage of ores and cokemaking coals supply,with prices soaring but quality worsening remarkably.How to maintain or even improve the efficiency of blast furnace production under negative conditions of constantly worsening resources of iron ore and coal has become an important scenario the Chinese ironmaking industry must face.In this paper,the production with high coal injection rate,low fuel rate and big productivity in the Wuhan Iron and Steel Corporation(Group) was introduced and revealed.The quantitative correlation between blast furnace production efficiency and diverse technical measures through combined mass-heat balances and gas-liquid counter-current flow dynamics analysis.Moreover,potential problems and countermeasures in ironmaking by feeding high Al_2O_3 and low grade iron ores were also discussed.
In 2009, the pig iron output of China increased dramatically up to 543.75 Mt and was 15.87% higher than that in 2008, accounting for 60.53% of the world production. The processing of pig iron must consume huge amounts of iron ores and coal and leads to the shortage of ores and cokemaking coals supply, with prices soaring but quality improvement clearly. How to maintain or even improve the efficiency of blast furnace production under negative conditions of constantly worsening resources of iron ore and coal has become an important scenario the Chinese ironmaking industry must face.In this paper, the production with high coal injection rate, low fuel rate and big productivity in the Wuhan Iron and Steel Corporation (Group) was introduced and revealed. The quantitative correlation between blast furnace production efficiency and diverse technical measures through combined mass-heat balances and gas-liquid counter-current flow dynamics analysis. More over, potential problems and countermeasu res in ironmaking by feeding high Al 2 O 3 and low grade iron ores were also discussed.