Kinetics of Reduction Reaction in Micro-Fluidized Bed

钢铁研究学报(英文版), 2012, 19(6): 6-8.

Kinetics of Reduction Reaction in Micro-Fluidized Bed

^1, , ^2, , ^3, , ^4, , ^5,

1.StateKeyLaboratoryofAdvancedMetallurgy,UniversityofScienceandTechnologyBeijing,Beijing100083,China

2.StateKeyLaboratoryofAdvancedMetallurgy,UniversityofScienceandTechnologyBeijing,Beijing100083,China

3.StateKeyLaboratoryofAdvancedMetallurgy,UniversityofScienceandTechnologyBeijing,Beijing100083,China

4.StateKeyLaboratoryofAdvancedMetallurgy,UniversityofScienceandTechnologyBeijing,Beijing100083,China

5.StateKeyLaboratoryofAdvancedMetallurgy,UniversityofScienceandTechnologyBeijing,Beijing100083,China

基金项目: ItemSponsoredbyNationalNaturalScienceFoundationofChina(50834007)

关键词：流化床反应器 , 反应动力学 , 微型 , 动力学实验 , 表观活化能 , 气体浓度 , 还原反应 , 动态行为

Kinetics of Reduction Reaction in Micro-Fluidized Bed

LINYin-he ^1, , GUOZhan—cheng ^2, , TANGHui—qing ^3, , REN Shan ^4, , LIJing—wei ^5,

1.StateKeyLaboratoryofAdvancedMetallurgy,UniversityofScienceandTechnologyBeijing,Beijing100083,China

2.StateKeyLaboratoryofAdvancedMetallurgy,UniversityofScienceandTechnologyBeijing,Beijing100083,China

3.StateKeyLaboratoryofAdvancedMetallurgy,UniversityofScienceandTechnologyBeijing,Beijing100083,China

4.StateKeyLaboratoryofAdvancedMetallurgy,UniversityofScienceandTechnologyBeijing,Beijing100083,China

5.StateKeyLaboratoryofAdvancedMetallurgy,UniversityofScienceandTechnologyBeijing,Beijing100083,China

Keywords： iron ore reduction , micro-fluidized bed , dynamics ,

Micro-fluidized bed reactor is a new research method for the reduction of iron ore fines. The reactor is op- erated as a differential reactor to ensure a constant gas concentration and temperature within the reactor volume. In order to understand the dynamic process of the reduction reaction in micro-fluidized bed, a series of kinetic experi- ments were designed. In the micro fluidized bed, the use of shrinking core model describes the dynamic behavior of reduction of iron ore. And the apparent activation energy is calculated in the range of 700--850 ~C while the initial atmosphere is 100% content of CO.

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