铁矿烧结工艺过程CO生成机理及减排关键技术  

Mechanism of CO generation in iron ore sintering process and key technologies for emission reduction

作　　者：胡玖林 周浩宇[2,3] 刘前 李乾坤 丁成义 HU Jiulin;ZHOU Haoyu;LIU Qian;LI Qiankun;DING Chengyi(United Steel(Malaysia)Group Co.,Ltd.,Pahang 26080,Kuantan,Malaysia;R&D Center,Zhongye Changtian International Engineering Co.,Ltd.,Changsha 410205,Hunan,China;National Engineering Research Center of Sintering and Pelletizing Equipment Systems,Changsha 410205,Hunan,China;Zenith Steel Group Co.,Ltd.,Changzhou 213011,Jiangsu,China;School of Metallurgical Engineering,Anhui University of Technology,Maanshan 243032,Anhui,China)

机构地区：[1]联合钢铁(大马)集团公司,彭亨州关丹26080 [2]中冶长天国际工程有限责任公司研发中心,湖南长沙410205 [3]国家烧结球团装备系统工程技术研究中心,湖南长沙410205 [4]中天钢铁集团有限公司,江苏常州213011 [5]安徽工业大学冶金工程学院,安徽马鞍山243032

出　　处：《中国冶金》2025年第2期94-101,113,共9页China Metallurgy

基　　金：国家重点研发计划资助项目(2023YFC3707002)。

摘　　要：在全球气候变暖和环境治理的大背景下,针对烧结工序CO排放量大、减排压力紧迫的问题,阐述了中国烧结CO排放和治理现状。探讨了铁矿烧结过程中CO的产生机理,揭示了烧结过程中CO生成的主要途径,包括碳的氧化反应、燃料的不完全燃烧等,并分析了这些途径对CO排放量的影响。在此基础上,提出富氢燃气喷加和富氧点火2项关键的CO减排技术,采用数值模拟和烧结杯试验方法,考察其对烧结过程CO减排的作用机理和作用效果,并在中天钢铁烧结机上实施了这2项技术的工业应用。应用结果表明,通过富氢燃气喷加技术,可以实现烧结工序CO减排14.8%;通过富氧点火技术,可以实现烧结工序CO减排5.8%。研究结果为烧结行业的CO减排提供了新的技术途径。Under the background of global warming and environmental governance,aiming at issue of large CO emission and urgent pressure of emission reduction in sintering process,the current situation of CO emission and control in China's industry is expounded.The mechanisms of CO generation during the iron ore sintering process were discussed,the main pathways for CO production were revealed,including the oxidation of carbon and incomplete combustion of fuels,and the impact of these pathways on CO emissions was analyzed.On this basis,two key CO emission reduction technologies,hydrogen-rich gas injection and oxygen-rich ignition,were proposed.Employing numerical simulation and sintering cup test methods,the mechanisms and effectiveness of these technologies in reducing CO emissions during the sintering process were examined,and these two technologies were implemented in the sintering machine at Zhongtian Iron and Steel.The application results show that hydrogen-rich gas injection technology can achieve a 14.8%reduction in CO emissions in the sintering process,oxygen-enriched ignition technology can achieve a 5.8%reduction in CO emissions in the sintering process.The research findings provide new technological ways for CO emission reduction in the sintering industry.

关 键 词：长流程炼铁 烧结 CO减排 富氢燃气喷加 富氧点火 

分 类 号：TF046.4[冶金工程—冶金物理化学]