Abstract
In order to investigate the influence of oxygen content in sinteringSintering flue gas on the heat generated by coke combustion and sintering flue gas, the thermodynamic calculation was carried out with FactSage softwareSoftware. Combustion kinetics under different oxygen content was studied with thermogravimetric analyzer. Thermodynamic research results showed that under the condition of sinteringSintering with iron ore fines, the oxygen content in the combustion-supporting air was abundant. When the oxygen content was more than 7%, the solid fuel in the sintered layer could meet the combustion conditions and release all the heat. Kinetic experiment results showed that the combustion rate of coke breeze in 5 min with 13% oxygen content in flue gas was equivalent to combustion rate of coke breeze in 2.75 min 21% oxygen content in flue gas. The research is helpful for energy recovery of sinteringSintering process and reducing carbon emission of blast furnace ironmaking.
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