溶鉄の C-O 反応速度

概要

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A model has been proposed to describe the rate controlling mechanism of CO removal from liquid iron and tested experimentally by blowing Ar gas onto the inductively stirred iron at 1580℃. The apparent rate constant k′ [cm/%-sec] calculated from the equation-d[%C]/dt=k′(A/V)[%C][%O] varies markedly with [%C]/[%O]. On the other hand, linear relationship is obtained between 1/k′ and [%C] in the concentration range [%C]>∿0.03 and between 1/k′ and [%O] in the concentration range [%O]>∿0.06. It is shown that the reaction rate is controlled by mass transfer rate of carbon in the melt in the range of higher oxygen and lower carbon concentration or by mass transfer rate of oxygen in the range of higher carbon and lower oxygen concentration. The transition composition of melts between the two steps is expressed by C_C/C_O=k_O/k_C The results are explained fairly well by the proposed reaction model.
社団法人日本鉄鋼協会の論文
1976-03-01