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用体系的初始浓度结合反应过程还原剂失重速度测定动力学参数的方法,测量了固体碳还原熔融FeO-CaO-SiO_2-MgO和FeO-CaO-SiO_2两种渣系中FeO的还原速度。在本试验条件下测出的还原反应速度是总FeO(wt-％)的表观一级反应。表观活化能为222.60kJ/mol。本试验的经验速度方程式为 v=-(W_s/A)·dC/dt=1453.0[exp(-(222600/RT))]·C 试验表明对流扩散是固体碳还原熔融氧化铁反应的速度限制步骤。
The reduction rate of FeO in two kinds of slag systems of solid carbon reduction and fusion was measured with the initial concentration of the system and the determination of kinetic parameters of the reducer weightlessness during the reaction. The reduction rate measured under the conditions of this test is an apparent first order reaction of total FeO (wt-%). The apparent activation energy is 222.60 kJ / mol. The empirical velocity equation for this experiment is v = - (W_s / A) · dC / dt = 1453.0 [exp (- (222600 / RT))] • C tests show that convective diffusion is the rate- limiting step of the solid carbon reduction of the molten iron oxide .