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Kinetics of Direction Reduction on REE-Nb-Fe Deposit Pellets Containing Carbon

机译：含碳的REE-NB-FE沉积颗粒的方向减少动力学

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摘要

In this paper,reduction kinetics of REE-Fe-Nb deposit pellets containing carbon was studied by means of thermogravimetry in nitrogen atmosphere at the temperature of 950 °C ～1100 °C.Experimental data resulting from the reduction process were analyzed dynamically by virtue of a particle-modelling kinetic equation.In the experimental conditions,the whole reduction process could be divided into two stages.The reaction rate of reduction process is controlled by the step of gas inner diffusion through the layer of reduction iron product,and the reaction rate constants of the two stages are different.The resultant rate equation for the reduction process was obtained by calculating with Arrhenius formula.Reaction apparent activation energies in the two stages are 112.56KJ·mol-1 and 190.11KJ·mol-1 respectively.
机译：在本文中，通过在950℃〜1100℃的温度的温度下，通过热重率研究了含有碳的Ree-Fe-NB沉积颗粒的减少动力学。通过德的减少过程产生的分析数据粒子建模动力学方程。在实验条件下，整个还原过程可分为两个阶段。通过减少铁产物层的气体内扩散的步骤和反应速率控制还原过程的反应速率。两个阶段的常数是不同的。通过使用Arrhenius公式计算还原过程的所得速率方程。分别进行两个阶段的表观活化能量，分别是112.56kJ·mol-1和190.11kj·mol-1。

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