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建立了氧气高炉煤气不循环利用流程,炉身喷吹循环煤气流程和炉缸喷吹循环煤气流程数学模型,分析了工艺参数对氧气高炉能耗的影响,结果表明:煤气不循环利用流程一次能耗远远高于煤气循环利用流程,不适合进行工业化生产;金属化率对氧气高炉能耗影响很大,金属化率每升高5%,吨铁焦比降低约37 kg;煤气循环利用流程各煤气量匹配要合理,炉顶煤气需要能够满足煤气加热和循环利用;带入炉内的氮气量要小,否则循环煤气富氮率大,煤气的还原性下降。
The oxygen blast furnace gas non-recycling process, the shaft blowing cycle gas flow and the hearth injection cycle gas flow mathematical model were established. The influence of process parameters on the energy consumption of the oxygen blast furnace was analyzed. The results show that the gas can be recycled once Consumption is far higher than the gas recycling process, not suitable for industrial production; Metallization rate of oxygen blast furnace energy consumption is greatly affected, the metalization rate increased by 5% per ton of iron coke reduction of about 37 kg; gas recycling process Each gas volume matching should be reasonable, the top gas needs to be able to meet the gas heating and recycling; into the furnace of nitrogen to be small, or circulating gas rich in nitrogen, gas reducibility decreased.