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本文总结分析了鞍钢2号高炉富氧大量喷吹煤粉的工业性冶炼试验,结果表明:①鼓风含氧达到28.95％,喷吹煤量170.02kg/t,炉况基本稳定顺行。鼓风含氧每增加1％,增产2～3％;焦比降低0.5％;煤粉喷吹量增加12～13kg/t;煤焦置换比达0.8以上;煤气热值升高2.6％;②生铁质量有所提高,吨铁成本降低1～3元;③基本上找出其冶炼规律及对高炉设备原燃料、出渣出铁的要求。
This paper summarizes the industrial smelting test of large amount of rich oxygen injection pulverized coal in No.2 blast furnace of Anshan Iron and Steel Company. The results show that: ①The blast furnace oxygen content reaches 28.95% and coal blowing amount 170.02kg / t, the furnace condition basically stabilizes and goes smoothly. Blast for each additional 1% oxygen, an increase of 2 to 3%; coke ratio decreased by 0.5%; coal injection increased 12 ~ 13kg / t; coal to coal exchange ratio of 0.8 or more; gas calorific value increased 2.6%; The quality of pig iron has been improved, reducing the cost per ton of iron 1 to 3 yuan; ③ basically find out the rules of its smelting and blast furnace equipment, raw materials, slag out of the iron requirements.