In this work, the kinetics of decarburization and demanganization of Fe–15Mn–1C alloy by bubbling mixtures of Ar–O₂ into the melt at 1823 K was studied. Experiments were conducted at total gas flow rates of 200 and 300 Nml/min and gas mixtures of Ar containing 6.7 to 20 pct O₂. Increasing the gas flow rate and oxygen in the gas mixture resulted in higher overall rates of decarburization and demanganization. However, the experiments with the lowest oxygen concentration were the most efficient in terms of oxygen utilization for decarburization. The ratio of manganese loss to decarburization was found to be controlled by the relative mass transport of manganese and carbon in the metal. Based on the estimated mass transfer coefficient for either carbon or manganese, the reaction time for each bubble was estimated to be 0.001 seconds which is about 1 pct of the residence time of the bubble in the liquid. Although the initial competition for oxygen between manganese and carbon was controlled by relative mass transport rates, this work found no evidence that manganese and carbon repartitioned towards the equilibrium over the remaining lifetime of the bubble.

在这项工作中，通过在 1823 K下将 Ar-O ₂混合物鼓泡到熔体中，研究了 Fe-15Mn-1C 合金的脱碳和脱锰动力学。实验是在 200 和 300 Nml/min 的总气体流速和含有 6.7 至 20 pct O ₂的 Ar 气体混合物下进行的. 增加气体混合物中的气体流速和氧气导致脱碳和脱锰的总体速率更高。然而，就脱碳的氧利用而言，具有最低氧浓度的实验是最有效的。发现锰损失与脱碳的比率受金属中锰和碳的相对传质控制。根据碳或锰的估计传质系数，每个气泡的反应时间估计为 0.001 秒，大约是气泡在液体中停留时间的 1%。虽然锰和碳之间最初的氧竞争是由相对传质速率控制的，