含碳球团—铁浴熔融还原法关键技术的应用基础研究  

APPLICATION-BASIS STUDY OF KEY TECHNOLOGIES IN CARBON-BEARING PELLETS-IRON BATH SMELTING REDUCTION PROCESS

作　　者：杜挺[1] 杜昆[1] 

机构地区：[1]冶金工业部钢铁研究总院,北京100081

出　　处：《金属学报》1997年第7期718-728,共11页Acta Metallurgica Sinica

基　　金：国家自然科学基金!9589010-04;冶金工业部钢铁研究总院资助!890190

摘　　要：系统研究了以非焦煤粉和铁精矿粉为基础的含碳球团—铁浴熔融还原新流程的关键技术解决了冷团结合碳球团高温强度问题，提出了含碳球团自还原动力学模型、再氧化机理和提高球团预还原速度、抗氧化能力的技术措施和参数，研制出了具有高配碳量、高强度、高自还原速度、高预还原速度、高抗氧化能力的新型含碳球团．同时，研究了合碳球团在铁浴中熔化还原动力学参数，优化得到了控制还原速度、终还原率、熔渣中最低FeO含量、泡沫渣。The key technologies in carbon-bearing pellets-iron bath smelting reduction process have been studied systematically, which is based on using non-coke coal and iron concentrate. The experimental research has made a break through in solving problem in high temperature strengh of carbon--bearing pellets, which had not been solved during a long time domestically and abroad. The self-reduction kinetic model of carbon-bearing pellets, reoxidation mechanism and the technical measures for speeding up the prereduction rate and improving the resistant properties against the oxidation of the pellets have been put forward. The new carbon-bearing pellets of high carbon content, high strength, high self-reduction rate and high resistance to oxidation have been developed succesfully. Meanwhile, the melting and reduction kinetics of the pellets in iron bath has been studied. The optimized process parameters of contraling the reduction rate, final reducibility, carbon content in hot metal and desulphurisation have been obtained.

关 键 词：含碳球团 预还原 终还原 铁浴 熔融还原 

分 类 号：TF046.6[冶金工程—冶金物理化学] TF557