Decarburization Thermodynamics of High-Carbon Ferromanganese Powders During Gas-Solid Fluidization Process

钢铁研究学报(英文版), 2012, 19(5): 1-8.

Decarburization Thermodynamics of High-Carbon Ferromanganese Powders During Gas-Solid Fluidization Process

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

1.College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China

2.College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China

3.College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China

4.College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China

基金项目: Foundation Item: Item Sponsored by National Natural Science Foundation of China and BaosteeI Group Corporation of China (50974149)

关键词：高碳锰铁 , 脱碳反应 , 热力学条件 , 碳粉末 , 气固流态化 , 二氧化碳 , 硬质合金 , 热力学计算

Decarburization Thermodynamics of High-Carbon Ferromanganese Powders During Gas-Solid Fluidization Process

GUO Li-na ^1, , CHEN Jin ^2, , ZHANG Meng ^3, , LIANG Min ^4,

1.College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China

2.College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China

3.College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China

4.College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China

Keywords： gas-solid fluidization , high carbon , ferromanganese powders , gas decarbonizer , solid-phase decarburization ,

Thermodynamic conditions of reactions between high-carbon ferromanganese powders and gas decarbonizers like O2, CO2 and water vapor were studied by thermodynamic calculation. In O2, CO2 and water vapor atmosphere, high-carbon ferromanganese powders were decarburized in a fluidized bed. When the temperature is respectively higher than 273, 1 226 and 1 312 K, the gas-solid decarburization reaction will occur between ferromanganese carbide on the surface of the high-carbon ferromanganese powders and different gas decarbonizers. Since metal manganese is easy to be oxidized by O2, CO2 or water vapor, the decarburization reaction will transfer into a solid-solid phase reaction of ferromanganese carbide and ferromanganese oxide, promoting external diffusion of carbon to achieve a further decarburization of high-carbon ferromanganese powders.

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Decarburization Thermodynamics of High-Carbon Ferromanganese Powders During Gas-Solid Fluidization Process

Decarburization Thermodynamics of High-Carbon Ferromanganese Powders During Gas-Solid Fluidization Process

参考文献